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Mathematics Questions and Answers August 22, 2022

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For an independent T-test to be appropriate, you must meet the following criteria except: Outcome variable at interval/ratio level Samples random and independent from one another Two samples One dependent and one independent sample If you are looking for the difference in the mean value of an outcome variable in two independent random samples,

The following questions require that you access Microsoft Excel for analysis. The team must work together to solve these questions. The data set for this assignment is located in the Pulse Rate Dataset. 1.John is interested in determining if frequency of exercise affects pulse rate. John randomly samples individuals at a local gym to ask if they

Which is true about this regression The following scatterplot, with an exponential regression, models a city's population since 1900. The population in 1950 was adjusted because a drought caused an exodus of farmers, most of whom moved back a few years later. Population in Thousands (x) +2.280 045 P - 0.85 Number of Years Since 1900 10 15 20 25 30
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Each of a sample of 171 residents selected from a small town is asked how much money he or she spent last week on state lottery tickets. 96 of the residents responded with $0 .The mean expenditure for the remaining residents was $19 .The largest expenditure was $215 . What is the mean of the 171 data points?

12. A study randomly assigned 60 adults diagnosed with metabolic syndrome to two groups. One group was given daily tablets containing the Chinese herbal supplement Yiqi Huaju Qingli, while the other group was given daily placebo tablets. All 60 patients maintained their standard medical treatment throughout the twelve weeks of the study. Urinary
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Hi I need help finding the answer to this question. Given the following information calculate the optimal authorized capacity for a B737 configured for 125 seats the no show rate NSR = 12%

Which of the following variables are continuous when the measurements are as fine as possible? (a) Age of mother (b) number of children in family (c) income of spouse (d) population of cities (e) latitude and longitude of cities (f) distance of home from place of employment (g) number of foreign languages spoken.

Find the critical numbers of the function. (Enter your answers as a comma-separated list. Use n to denote any arbitrary integer values. If an answer does not exist, enter DNE.) g ( ) =12 3tan( ). =? (b) Sketch the graph of a function that has a local maximum at7and is not continuous at7.

In a study of government financial aid for collegestudents, it becomes necessary to estimate the percentage offull-time college students who earn abachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a 0.05 margin of error and use a confidence level of 90%. Complete parts(a) through(c) below. a.

(1 point) Find the length of the entire perimeter of the region inside :- = 15 sin 6 but outside 1' = 4. Answer: 15[pi-(23in"{-1))(1!5)] 1. Consider the curve given by the polar equation a" = l + 2ein(3). (a) Plot the points where 9 = U, 6' = g, 6' = g [13} Find the slope of the tangent line to the curve at I9 = g {{2} Plot the tangent line for
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Use the four-step procedure for solving the following variation problem. The height that a ball bounces varies directly as the height from which it was dropped. A tennis ball dropped from 13 inches bounces 7.8 inches. From what height was the tennis ball dropped if it bounces 60 inches? The tennis ball needs to be dropped from the height of so
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A.Explain why the condition " f is continuous over [ a , b ]" from the Evaluation Theorem is fulfilled by this scenario. B.Explain why the condition " F is any antiderivative of f on [ a , b ]" from the Evaluation Theorem is fulfilled by this scenario. C.Determine the position function s ( t ) using the initial condition that s (0) = 5. D.Apply

I need help with a scenario using the hypothesis testing. I need direction on how you set it up and solved it example. Describe how you would set up the problem and solve it. I have to make up my own scenario and use significance level.

According to a random sample taken at 12 A.M., body temperatures of healthy adults have a bell-shaped distribution with a mean of 98.2998.29 degreesF and a standard deviation of 0.560.56 degreesF. Using Chebyshev's theorem, what do we know about the percentage of healthy adults with body temperatures that are within 22 standard deviations of the

If f(x) is discontinuous, determine the reason. a)f(x) is continuous for all real numbers b) The limit as x approaches 1 does not exist c)f(1) does not equal the limit as x approaches 1 d)f(1) is not defined

Tequila is made from the blue agave plant, a member of the lily family. It takes up to 8-12 years for a blue agave plant to mature. They grow only in the Guadalajara region of Mexico. Most tequila producers contract with area farmers and buy agaves locally. There are laws that dictate the composition of tequila, including the percentage of sugars

nother question that surve6. One result that was shared from the survey is that 75% of the survey respondents reported feeling uneasy when they left their cell phone at home. Because the number 75% describes a sample, we'd call it a ____________________.y respondents had to answer was "Do you check your cell phone within 10 minutes of waking up in

What is the range of the function f(x) = 4x - 3 over the interval of -2 x < 5

Help needed for c (iii) Let X ~ Unif(0, 0), a uniform distribution with an unknown endpoint 0. (a) Suppose we have a single observation on X. i. Find the method of moments estimator (MME) for 0 and derive its mean and variance. ii. Find the maximum likelihood estimator (MLE) for e and derive its mean and variance. (b) The mean square error (MSE)
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Your overall objective is to calculate validity coefficients (recall this is the correlation between test score and performance) to determine which test is best suited for which job and then prepare a PowerPoint presentation to describe your results and explain your recommendations to your client

1.A researcher investigates the relationship between pollution levels (CO, measured in ppm of CO) and distance from major intersections (DIST, straight line distance, measured in meters).Using 102 data points distributed throughout the city she finds a correlation of r = -0.32. a.Test the hypothesis that there is no correlation between pollution

List and describe two types of data collection methods used in research?

A survey of athletes at a high school is conducted, and the following facts are discovered: 37% of the athletes are football players, 51% are basketball players, and 18% of the athletes play both football and basketball. An athlete is chosen at random from the high school: what is the probability that they are either a football player or a

The lifetime of a particular brand of AA batteries follows a normal distribution. The mean lifetime of particular brand of AA batteries is 1000 hours, with a standard deviation of 100 hours. What is the probability that a randomly selected battery lasts between 1050 and 1150 hours? a.0.9915 b.0.2417 c.0.4332 d.0.3085

Please help me out how to solve this statistics problem, Thank you very much The age of professional racecar drivers is normally distributed with a mean of 41 and a standard deviation of 5. One driver is randomly selected. (Round all answers to three decimal places) What is the probability that this driver is less than 31 years old? What is the
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Upload Choose a File Question 3 If lim [f (x) + g(x)] = 2 and lim If (x) - g(x)] = 1, find lim If (x)g(x)]. x-a Upload Choose a File Question 4 Prove f (x) = 1 + mx is continuous at x = 1, where me R Upload Choose a File 9 acer
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An important quality characteristic used by the manufacturers of ABC asphalt shingles is the amount of moisture the shingles contain when they are packaged. Customers may feel that they have purchased a product lacking in quality if they find moisture and wet shingles inside the packaging. In some cases, excessive moisture can cause the granules

a.) 6 + 8 = 8 + 6 b.) (4 + 2) + 1 = 4 + (2 + 1) c.) 5(4 + 3) = 5(4) + 5(3) d.) 5 + (-5) = 0

5 Parts to this question. An observational study of teams fishing for the red spiny lobster in a certain body of water was conducted and the results published in a science magazine. One of the variables of interest was the average distance separating trapscalled "trap spacing"deployed by the same team of fishermen. Trap spacing measurements(in

A recent study reported that the prevalence of hyperlipidemia (defined as total cholesterol over 200) is 30% in children 2-6 years of age.If 12 children are analyzed, A.What is the probability that at least 3 are hyperlipidemic? B.What is the probability that 3 are hyperlipidemic? C.How many would be expected to meet the criteria for

Ferret ID Vaccine Day Temperature Weight 558 None -2 100.6 1420 558 None -1 101.5 1420 558 None 0 101.9 1390 558 None 1 101.2 1380 558 None 2 101.8 1400 558 None 3 101.9 1390 558 None 7 101.8 1400 558 None 14 102.1 1400 558 None 20 102 1450 558 None 26 100.6 1440 558 None 27 100.7 1420 558 None 28 101.7 1420 558 None 29 101.6 1410 558 None 30

It costs more to produce defective items (since they must be scrapped or reworked) than it does to produce non-defective items. This implies that manufacturers should ensure the quality of their products by perfecting their production processes rather than through inspection of finished products. In order to better understand a particular

Hello Can someone help me with the following please? The national average for the math portion of the College Board's SAT test is 550. The College Board periodically rescales the test scores such that the standard deviation is approximately 75. Answer the following questions using a bell-shaped distribution and the empirical rule for the math test

__________ is the model in which, wherever you add in an additive model, you will multiply in a multiplicative model. Group of answer choices ETS HWAS MAPE HWMS

8) A severe drought affected several western states for 3 years. A Christmas tree farmer is worried about the drought's effect on the size of his trees. To decide whether the growth of the trees has been retarded, the farmer decides to take a sample of the heights of 25 trees and obtains the following results (recorded in inches): 60 57 62 69 46
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Find the present value of the following cash flow stream, discounted at 10 percent: year 1, $0; year 2, $0; year 3, $0; year 4 to year 6, $200 per year.

The side-relief, or side-clearance, angle should be Select one: of t a. 2 to 5 b. 15 to 30 OC 12 to 15 O d. 6to10%To hand-ream a 3/4-in. hole, first drill or bore the hole tor Select one: of O a. .700 0-b..735 O .750 d. .745

statistics Eight of the 50 digital video recorders (DVRs) in an inventory are known to be defective. What is the probability that a randomly selected item is defective? The probability is E (Type an integer or a decimal. Do not round.)
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Can you please show me the computations and the relevant data to analyze I will need to complete for this assignment The Marketing Team at Noodles & Company will be developing a new marketing plan for 74 restaurants. They have a goal of increasing average sales per square by 10 percent over three months spanning the summer months of June, July and

HVAC shop orders the following refrigerant: 125 pounds of R-134a 150 pounds of R-125 75 pounds of R-22 90 pounds of R-152a What is the total weight of refrigerant ordered? Group of answer choices 440 pounds 445 pounds 450 pounds 455 pounds

When conducting active air sampling, attach the sample collection device to the shirt collar or as close as practical to the nose and mouth in the employee's breathing zone (i.e., in a hemisphere forward of the shoulders within a radius of approximately _____ inches)

Are customers more loyal in the East or in the West? The following table is based on information from a recent study. The columns represent length of customer loyalty (in years) at a primary supermarket. The rows represent regions of the United States. lessthan1Yr Yr1-2 Yrs3-4 Yrs5-9 Years10-14 Years15 or MoreYears Row Total East 32 31 59 112 77

1) A drug tester claims that a drug cures a rare skin disease 85% of the time. The claim is checked by testing the drug on 100 patients. If at least 82 patients arecured, the claim will be accepted. Find the probability that the claim will be rejected assuming that themanufacturer's claim is true. Use the normal distribution to approximate the

The Petroco Service Station has one pump for regular unleaded gas, which (with an attendant) can service 10 customers per hour. Cars arrive at the regular unleaded pump at a rate of 6 per hour. Determine the average queue length, the average time a car is in the system, and the average time a car must wait. If the arrival rate increases to 12 cars

0.5-ml container of an investigational ophthalmic solution contains a drug in a concentration of 0.01 my/mL. How many micrograms of drug would be administered in a 50-pl. drop
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Use the data given below to answer the following question. Following is an extract from the Employee Payroll Database of HFR Informatics Inc. Employee Ethnic Group Gender Rank / Grade Pay Scale Maria Asian American Female 3 A Peter White American Male 2 B George Hispanic American Male 1 C Smith Black American Female 1 D Johnson Alaska Native Male

2. (15 pts) Suppose that the random points (x, y) are uniformly distributed in the rectangular area centered at the origin. Using the probability that this random point in the rectangle is contained within the inscribed circle of radius 2, write down (a) an expression to estimate the value of * with Monte Carlo Simulation and (b) the logical
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Sketch the graph of given function by determining the appropriate information and points from the first and second derivatives. Use a graphing calculator to check the graph. y= x^3-2x^2-4x+2

Part 121) Independent Samples Description: Two ethnographers in New York City recruited marijuana purchasers recorded information regarding a total of 99 marijuana purchases. Among the recruits, there were 60 males and 39 females. Purchases were classied as either Designer (high) grade or Commercial (low) grade. Among males, 27 purchases were
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A random sample of 40 bus riders was surveyed on a particular stop of a route on a Monday between 1:00 and 2:00 pm. The frequency distribution below shows the distribution of wait times for a bus (in minutes). Show all work for the following questions. \f
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In a study of police gunfire reports during a recent year, it was found that among 540 shots fired by New York City police, 210 hit their targets; and among 283 shots fired by Los Angeles police, 80 hit their targets. We want to use a 0.05 significance level to test the claim that New York police have a higher hit rate than Los Angeles police. Let

Find a parametrization for the line in which the plane intersect Find a parametrization for the line in which the planes intersect. 8x - 5y - 2z= - 9, - 6x - 2y - 3z = 4 O A. X = 88t- 19 y = 288t + 11 23 Z= - 368t 10 23 O B. X = 88t- 19 , y = 36t + 11 23 23 Z= - 368t O C. x=704t - 19 y = 288t + 11 23 23 Z = 368t O D. X= 704t- 19 23 y = 36t + 11 23
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Hi, could you please help me with the following problems? Thank you very much! 2. Solve (xe 27) dx + (x4+ 2x2y?) dy, where C is the boundary of the region between the circles x* + y = 1 and x2 + 32 =4. Make sure to include a sketch of the region, its boundary C and proper orientation. [ 5 pts ] 3. Solve F . dr, where F(x, y, z) = (xy, 2z, 3y) and
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A circle has a circumference of 20 units, find its diameter (in units). a. 30 b. 20 c. 40 d. 10 The sum of relative frequency is equal to ____________. a. 0 b. 50 c. 1 d. 100 Man will enclose a rectangular portion of his field. If the enclosures is 120m long and 50 m wide, with a 2m opening allotted for the entrance, how maby meters of fencing

Please explain the example below part b, I would like to learn the steps in details, not sure why my answer is wrong, please explain. A researcher notes that, in a certain country, a disproportionate number of software millionaires were born around the year 1955. Is this a coincidence, or does birth year matter when gauging whether a software
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My Grammarly - Grammarly 102 100 Quality characteristic XXX 0 10 15 20 Process input Negative linear Negative curvilinear No association Positive linear
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Wind Mountain is an archaeological study area located in southwestern New Mexico. Potsherds are broken pieces of prehistoric Native American clay vessels. One type of painted ceramic vessel is called Mimbres classic black-on-white. At three different sites the number of such sherds was counted in local dwelling excavations. site 1 site 2 site 3 24

Fast-Food Bills for Drive-Thru Customers A random sample of49 cars in the drive-thru of a popular fast food restaurant revealed an average bill of$17.02per car. The population standard deviation is$5.06 . Estimate the mean bill for all cars from the drive-thru with93% confidence. Round intermediate and final answers to two decimal places.

1: If Jane has 6 friends she can bring to her party, but can only choose 2 to tag along with her, how many ways can Jane choose two friends? 2: Suppose at a track and field event, the 100-meter dash gives medals to the first 3 finishers of the 8 participants in the race. How many ways are there to award the 3 medals? 3: Author and solve your own

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thank you for helping According to the guidelines of the World Anti-Doping Agency (WADA), athletes are subject to testing both 'in-competition' and 'out-of-competition' for prohibited substances. Suppose that the tests for prohibited substances can identify a substance abuse 98% of the time. However, 1% of the time the test indicates a positive
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The estimated populations of several U.S. cities are shown. Each population is rounded to the nearest thousand. Write the range of whole numbers that each rounded population could represent. City 2010 Population Columbus, OH 1,837,000 The range is (smaller value) through (larger value)

Find the discount amount on the following items. Original price: $250.00 Discount: 25% $ Original price: $15.00 Discount: 50% $ Original price: $75.00 Discount: 15% $

A store sells wine by the case.Each case sells for price of $200.If daily sales are distributed normally with a mean of 150 and a variance of 625, the probability is 0.67 that daily sales are greater than what number? A.139 B.161 C.142 D.None of these answers are correct.

1. For any nondecreasing function y, define (y) = sup(t : w(t)
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A study was undertaken to see how accurate food labeling for calories on food that is considered reduced calorie.The group measured the amount of calories for each item of food and then found the percent difference between measured and labeled food, .The group also looked at food that was nationally advertised, regionally distributed, or locally
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Questions 29-33 are based on the following information. An NDOT employee wants to estimate the population mean of annual miles driven by all drivers in Nevada. He randomly ask 25 people waiting in a DMV and obtained the following sample data (in 1,000 miles): 9.5, 8.7, 15.3, 17.6, 10.2, 9, 6.3, 4.5, 20.1, 7.8, 13.5, 12.6, 15.8, 11.6, 10.7, 13.4,

Table 1 Participant Demographics and Measures at Baseline (N = 239) Control (n = 53) Mindfulness (n = 96) Yoga (n = 90) Demographics % Gender Male 1.15 18.9 22.9 26.7 Female Ethnicity 81.1 77.1 73.3 Not Hispanic/Latino 2.86 90.6 96.9 Hispanic/Latino 92.2 9.4 3.1 7.8 Race White 71.7 14.02 Black 85.4 74.4 3.8 Asian 13.2 4.2 10.0 5.2 7.8 Other 11.3
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Suppose a study reports that the average price for a gallon of self-serve regular unleaded gasoline is $3.16. You believe that the figure is higher in your area of the country. You decide to test this claim for your area of the United States by randomly calling gasoline stations. Your random survey of 25 stations produces the following prices (all

Which statement is true about this regression Bonus in Percent of Salary f(x) =1.0x -+3.32 -0.66 Number of Years Since 2000 10 11 2018 WGU. Powered t Dy GeoGebra Question 11 of 12 Which statement is true about this regression? If data points for 2003 and 2008 were lower than usual due to two recessions, they should be removed to make more
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Exercise 1: An engineer is going to redesign an ejection seat for an airplane. The seat was designed for pilots weighing between 130 lb and 171 lb. The new population of pilots has normally distributed weights with a mean of 138 lb and a standard deviation of 34.8 lb. a. If a pilot is randomly selected, find the probability that his weight is

Eddy conducted a before-and-after study on college statistics students to see if the course improved ability to reason. In a later study, he used a father-son sample to assess generational differences in attitudes toward social media. His two designs were ______ and ______. Group of answer choices paired, paired paired, independent independent,

If any vertical line intersects a graph ________ the graph does not define y as a/an __________ of x

A normal distribution has a mean of 79 and a standard deviation of 10. Find the z score for a data value of 81.

A panel discussion of five employees consists of two women and three men. In how many ways can this group be selected from 10 women and 20 men?

29. Find the distribution function of the random variable X whose probability density is given by f0r0
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A metal stamping machine can process 34 sheets of metal per hour. You have 3,128 sheets of metal to process. How many hours will it take to process all of them

A particle moves along the x-axis so that at time t is greater equal to 0, it's position is given by x(t) = -t^2 - 8t - 23. Determine if the particle is moving to the right or to the left at t=5. find v(5) =

Hey, I need help with this chapter. It's due tomorrow morning so I would need it done within the next few hours. I need the answers with work shown. I need problems 4,5,6,10,11,12,15,17,18,19,20,23,25,26,27,28 done. \f\f\f\f\f\f
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ARC LENGTH2 | X 660 | Y 70 R45 ARC " R300 LENGTH 1 Question 6 (2 points) ) Listen E The value of # is 46 What is Arc Length 17 S What is Arc Length 27 & |
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How do I find the distance to the True Horizon for Mailbox Peak? 'eusmusi.niusan.maoa3 a 6.53 320 go no. 2. S v.33. 55.12% E: 2:. phi com ES :3 \"his :5... G. 3...: N n 3&6me .355... .. 52.8 E... ism ii: 3.3: 3. an: a. '8: E: E C it mauoagaca. nahuavsaiae :33 Eng... .5 22.. a... .48\". Ken32 E .535: 2:... u S 3ng 2: 35.330 an 1:2\". 03.5 ./ :50:
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Assume that x, y, z, and b are positive numbers and b # 1. Use the properties of logarithms to write the expression in terms of the logarithms of x, y, and z. 12 x /V6 10g b 712
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Females participated in every event at the 2012 Summer Olympic Games. Prior to 2012, there had been a steady increase in the female participation rate. The International Olympic Committee states that the female participation in the 2004 Summer Olympic Games was 42%, even with new sports such as weight lifting, hammer throw, and modern pentathlon

A bottler of drinking water fills plastic bottles with a mean volume of 999 milliliters (mL) and standard deviation of 7 (mL)The fill volumes are normally distributed. What is the probability that a bottle has a volume greater than992mL?

Review the steps involved in a statistical hypothesis test. How do we set up the null and alternative hypotheses? How do we set the level of significance? Can you think of a business research situation where you could apply such processes?

sheridan sells a learning system that helps preschool and elementary students learn basic math facts and concepts

n = 36 H 0: 20 x = 24.6 H a: > 20 = 12 Test statistic = The P value is = If the test is done at a .05 level of significance, the null hypothesis should _____.

Score-.ozsmt pt - 4 9of18l15wmplotolv '3' 5.2 .27 Find the x-values of all points where the function has any relative extrema. Find the value(s) of any relative extrema. x2 -2x+1 x): x-7 Select the correct choice below and, if necessary, ll in any answer boxes within your choice. 0 A- The function has a relative maximum of J at x = 3 and a

) (12 points) An manufacturer states that their energy efficient dishwasher use 3.5 gallons water for each cycle. We randomly selected 8 dishwashers and run one cycle for each. The recorded water usage are: 3.8, 3.7, 3.5, 3.8, 3.6, 3.7, 3.5, 3.3. Assume the distribution of water usage is normal. 1.(4 points) Calculate 98% two-sided confidence

Ann thinks that there is a difference in quality of life between rural and urban living. She collects information from obituaries in newspapers from urban and rural towns in Idaho to see if there is a difference in life expectancy. (1 point) Farmers know that driving heavy equipment on wet soil compresses the soil and injures future crops. Here
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Question 8 3 pts Suppose a 99% CI for # is (78.56, 87.33). Then we can predict that for the test of Ho: # - 85 vs Ha: / / 85, the p-value will be: O less than 0.01 O greater than 0.05 O impossible to tell O less than 0.05 greater than 0.01Question 7 3 pts A minimum number of successes and failures is necessary when we make inferences about: O two
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please solve asao Problem 1. Determine whether or not the following limit exists: lim (29)-+(0.0) y10 + 2-2 Problem 2. Let f(x, y, =) = 2 sin( c' + y' + 1 + r-+ 22+1 + zx' In(y' + 1) Compute fergzza (10, 2, -8) Problem 3. Let f(x, y, 2) = yet In z Compute the tangent plane at (0, 2, 2) and use it to estimate f(-.1, 2.2, 1.8)
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Greater American Insurance Co. uses credit scores as a basis for the creation of insurance scores for insureds and potential insureds. Insurance scores are meant to predict which one of the following? Available answer options Select only one option A The predictability of a loss B Creditworthiness C The range of coverages needed D The likelihood

1. What is an example of a rational expression that has the non-permissible values of x = 0, 6. 2. what is an example of a rational expression that is equivalent to -7w^2/3(w-2) and has restrictions of w -7/3, -3, 2 .

Change the following percent to a decimal. 75% = 0.75 Find the amount of sales tax charged on the following purchases. $250.00 purchase with sales tax of 9% $260.00 $150.50 purchase with sales tax of 8% $162.54 $20.78 purchase with sales tax of 4% $21.61 Find the discount amount on the following items. Original price: $250.00 Discount: 25% $62.50

Use a calculator to find the value to four decimal places. (If an answer is undefined, enter UNDEFINED.) log(In 0.01)
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2 statistics Wait-Times ( Raw Data, Software Required): There are three registers at the local grocery store. I suspect the mean wait-times for the registers are different. The sample data is depicted below. It gives the wait-times in minutes. Register 1 Register 2 Register 3 2.0 2.0 2.0 2.1 1.1 2.2 1.8 2.0 1.9 1.5 1.0 1.8 1.4 2.0 2.1 1.4 1.0 2.2
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Answer all questions with step by step explanation. Show all your work and use the information in order to answer the questions. Problem A A math major is home for a vacation break and takes a job for thirty days. In negotiating for a salary, she tells her employer that instead of a wage of $20/hr, she would accept one that pays one penny the
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Hi. I'm taking an intro to stats class and a question on a homework keeps bugging me. Q) Find a value of c so that P(Z c) = 0.53.

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