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Mathematics Questions and Answers March 19, 2021

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write in interval and set builder notation: "all multpiles of 2"

What is an appropriate serving size for a hamburger? Multiple Choice 3 to 4 ounces 6 to 8 ounces 8 to 12 ounces 12 to 16 ounces

List the probability value for each possibility in the binomial experiment calculated at the beginning of this lab , which was calculated with the probability of a success being . (Complete sentence not necessary; round your answers to three decimal places)

Consider the transfer function for a unity feedback loop below: G(s) = 4/(s+0.1)(s+2)(s^2 +3s+9) (b) Find the value for the gain K that gives the smallest steady-state error to a step reference input while keeping the phase margin at least 30 degrees (PM 30)

On a statistics exam, you have a score of 73. If the mean of the exam is 65 would you prefer the standard deviation of the scores to be 8 or 16? Why?

asuume that a fair die is rolled. the space is [1,2,3,4,5,6] and all the outcomes are aqually are equally likely. find p(8) express you ansuwer in exact form

For any subring R C, R is an integral domain with characteristic subring Z and char R = 0

Part 1: Understanding Ionic Bonds Step 1: Identify proton/electron #; Draw the electron and valence shells @ Step 2: Indicate how the elements become ionic through drawing. ('39
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b. Find all maximum and minimum values with the help of the second derivative test of Ex - 7x + 5 on the interval -4 5 x $ 3
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Given that . is a set of strings and n is a certain positive integer, Three of the several strings in A" are the following: 100100, 001001, 011001 Which set of strings is A? o {001,101} o {100,110} o {00,01,10} o {00,10,11}
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9. Coding Scenario 18 {4 codes} A 30-year-old male was brought to the emergency department complaining of back and neck pain from a fall that occurred after he collided with another player while playing basketball at the local outdoor basketball court. The patient was spending leisure time playing basketball
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Solve the problems *2.5.19 Question Help (a) Find the five-number summary, and (b) draw a box-and-whisker plot of the data. 4 8 8 6 1 9 8 7 9 6 9 5 1 62987 79 - (a) Min = (Simplify your answer.)
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In how many ways can five scholarships of $1000 each be given to five students from a group of fifteen applicants

Recently, a nurse commented that when a patient calls the medical advice line claiming to have the flu, the chance that he or she truly has the flu (and not just a nasty cold) is only about 4%. Of the next25 patientscalling in claiming to have the flu, we are interested in how many actually have the flu. On average, for every 25 patients calling

Which type of C.O.O. would be used for an export to Israel? Question 25 options: None, a Certificate of Origin isn't needed A NAFTA Certificate of Origin A CEFTA Certificate of Origin A preferential Certificate of Origin A generic or non-preferential Certificate of Origin

RST is similar to triangle XYZ by the AA Similarity Postulate . What is the measure of X? Enter your answer in the box. mX= \f
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Heights of women have a bell-shaped distribution with a mean of 165 cm and a standard deviation of 8 cm. Using Chebyshev's theorem, what do we know about the percentage of women with heights that are within 2 standard deviations of the mean? What are the minimum and maximum heights that are within 2 standard deviations of the mean? At least __ %

For each of the following, determine whether the map T is linear. If so, determine (with argument) whether T is injective and/ or surjective. 4. The map T : Fun(R, R) - Fun(R, R) given by T(f (t) ) = f(t2). 5. The map T : Fun(R, R) - Fun(R, R) given by T(f (t) ) = (f(t) )2
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Suppose that the functions f and g are defined as follows. f (x) = 3x - 7 g (x) = 5x -8 (a) Find ) ( - 4). (b) Find all values that are NOT in the domain of -. If there is more than one value, separate them with commas
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How many ways can we arrange 8 people at a circular table in there are four men and four women and we want the sexes to alternate?

Solve the inequality and write the solution set, S, using words check to justify your answer \f
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The student council at one high school must choose two representatives from each of the sophomore, junior, and senior classes to attend the annual student council convention. If there are 6 sophomores, 5 juniors, and 7 seniors on the student council, in how many ways can the group be chosen for the convention?

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how many gadgets sold needed to generate a revenue of at least $45000 when revenue function is R(x)=6(x^2+30000)^(1/3)-190

d i: -0.6 -1.7 -2.7 -3.8 -1.3 -3.6 -4.1 -1.1 Compute d overbar and s d . d overbar=____

Two percent of the deaths in Ontario are out of severe depression. If there are 500 deaths in a week, estimate the following using normal approximation to the binomial distribution: (a) The probability that more than ten deaths in a week would be due to severe depression. (b) The probability that at least 5 deaths are owed to depression.

do we Use ice packs to minimize Vaso-occlusive pain in the legs

Calvin's Concrete Company supplied a contractor with 16 cubic yards of concrete at a cost of $1,304.00. Assuming they charge the same rate per cubic yard regardless of the amount of concrete supplied, what would they charge for 26 cubic yards of concrete

Guest et al. (2020) define saturation as the point in a study where comparable and categorical data have been seen many times over. This can only be achieved by asking each participant similar questions. rewrite

[(p1 p2) (p2 p3) (pn1 pn)] [(p1 p2 pn1) pn] is a tautology whenever p1, p2, , pn are propositions

You measure 36 dogs' weights, and find they have a mean weight of 47 ounces. Assume the population standard deviation is 13.4 ounces. Based on this, construct a 90% confidence interval for the true population mean dog weight. Give your answers as decimals, to two places ounces

Task 1. Interpret the following graph in detail: 104 -10 -5 5 10 -5 () Identify the domain and range. (il) Does this graph represent a function and a one-one function, Why/Why not? Provide a detailed explanation/justification
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The level of nitrogen oxides (NOX) and nonmethane organic gas (NMOG) in the exhaust over the useful life (150,000miles of driving) of cars of a particular model varies Normally with mean90 mg/mi and standard deviation4 mg/mi. A company has25 cars of this model in itsfleet. UsingTable A, find the levelLsuch that the probability that the average NOX

A clinic wants to identify patients who score low on a test so that the patients can be offered a new therapy. The scores are normally distributed with a mean of 90 and a standard deviation of 10.The clinic decides to find the lowest 40% of scores. What is the score that marks the 40th percentile? Round your answer to the nearest 2 decimal places.

how do I calculate the quantity of the value described in the question: Average enrollment in charter schools in Illinois. In 2014, there were 148 charter schools in the state of Illinois 1 and the total number of students attending the charter schools was 59,388.

Identify key differences between qualitative and quantitative research.

What the answer? * 1 pol Find the surface area of this net. Round to the nearest whole number and don't forget units. (You can write out the name of the units if you are unable to type them) 16 cm 8 cm 6 cm 6 cm 8 cm 6 cm 16 cm Your
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How many different words can be formed using all letters of the word statistics ?

2.1. Runway Length Conduct a runway length analysis for the B787-8. Be sure to examine both takeoff and landing distance. Determine a recommended runway length for the proposed Runway 8L-26R. Aircraft performance charts located in Appendix. A. 2.2. Runway Pavement Requirements Determine the Runway Width, shoulder width, and blast pads required for

There are 20 computers in a store. Among them, 15 are brand new and 5 are refurbished. Six computers are purchased for a student lab. From the first look, they are indistinguishable, so the six computers are selected at random. Compute the probability that among the chosen computers, two are refurbished

A company manufactures a large number of rods. The lengths of the rods are normally distributed with a mean length of 4.4 inches and a standard deviation of .5 inches. If you choose a rod at random, what is the probability that the rod you chose will be: a) Less than 4.5 inches? b) Greater than 4.0 inches? c) Between 3.8 inches and 4.7 inches

Perform the indicated operations. Write the complex numbers in standard form, a+bi. (5-8z) + (7-4z) =

Show that the following graph G is a permutation graph by finding a permutation "TL' with Grom - G
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Based on interviews with 89 SARS patients researchers found the main incubation period was 4.3 days with a standard deviation of 15.7 days. Based on this information construct a 95% confidence interval for the mean incubation period of the SARS virus. If the lower bound is 0.99 days my question is what is the upper bound?

what is it called when both subjects and researchers involved with the subject are blinded

I wanted to approach my current teacher but he is quite standoff-ish. I could always continue with my current studies which may steer away from differential equations, but time is of the essence

What is a random variable? How would you differentiate a discrete from a continuous random variable?

Calculate the unit rate for each of the following. Round to two decimal places and include units A.) 200 miles in 3 hours B.) 36 inches to 3 feet C.) $21.50 for 4 gallons D.) 2.08 for 6 ounces

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A professor of statistics wants to test that the average amount of money a typical college student spends per day during spring break is over $70. Based upon previous research, the population standard deviation is estimated to be $17.32. The professor surveys 35 students and finds that the mean spending is $72.43. Which of the following statements

Find thez-scoresuch that the area under the standard normal curve to the right is0.42. The approximatez-scorethat corresponds to a right tail area of0.42is

One of the authors received a credit card bill for $3014, but it included a charge of $ 1867 that was not valid. Find the values of the absolute and relative errors. The value of the absolute error is $ nothing.

The Jones school district gives awards to its schools based on overall student attendance. The data for attendance are shown in the table below, where Min represents the fewest days attended and Max represents the most days attended for a single student: \f
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The number of customers paying with Apple Pay is Poisson distributed. The mean number of such users per 5-minute interval is 1.5. The probability that no such users in the next 10 minutes is:

spanking is impacted by hours of television watching Which one is the independent variable and which one is the dependent variable?

5. Using the frequency distribution, what is the tractor sales success average? In part 3, note that the numerator in the formula for the mean is the total number of successes. The total number of trials is the denominator of the formula for the mean multiplied by 4. What does this average mean
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11 (1 point) A scientist studying a new antibiotic drug carefully monitors the weight of a rat over a number of weeks. The weight of the rat during the course of the six-week study can be modeled by the equation w(t) = 0. 38t3 - 3. 81t2 + 10. 92t + 450. 02 where wit) is the weight of the rat, in grams, and t is the time, in weeks, since the study

what does it mean by ploting E vs. V and deltaE/deltaV by using the average volume for V

essential when making decisions such as buying a home, investing in stocks, or comparing prices of goods. Math is also used in measuring time, distance, and speed, which is essential for transportation, communication, and navigation.Read the problem carefully: Before you start solving the problem, make sure you understand what it's asking. Read
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Find the product. Simplify your answer. (4f - 1) (4f + 4)
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How many solutions does the following equation have over the interval \( [0,2 \pi) \) ? 1 \[ 8 \sin (x)-7=0 \] 4 2 3 0

(1 point) A conical water tank with vertex down has a radius of 14 feet at the top and is 23 feet high. If water flows into the tank at a rate of 10 ft / min, how fast is the depth of the water increasing when the water is 14 feet deep? The depth of the water is increasing at ft/min
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Olympic Sports purchased two dozen pairs of 5th Element Adult Aggressive in-line skates at a cost of $1950. Operating expenses for the store are 25% of cost, while total markup on this type of product is 35% of selling price. Only 6 pairs of the skates sell at the original price, and the manager decides to mark down the remaining skates. The price

QUESTION 58 1.In a one-tail test of the significance of mean differences (everything else being equal) A. the difference required for significance will be more than in a two-tail test. B. the difference required for significance will be less than in a two-tail test C. the difference required for significance will be the same as for a two-tail test.

Which of the following is NOT good advice to provide someone using a rollator frame/four-wheeled walker? Question 13 options: 1) The brakes can be used for going down ramps. 2) Don't let the walker get too far away from you - keep it close to your body. 3) Pull on the walker to assist you to stand up. 4) Whilst moving, always look in front of you

Consideration is being given to purchase of two competing production systems. Performance of each machine is measured at random times. Sample sizes of 10 and 12 are obtained from each. What type of test should be implemented in this research? Two-tailed Z test assuming unequal variances. Two-tailed t-test, assuming equal variances and pooling

What happens to the rejection region if the level of significance is changed from 0.10 to 0.05? Select one: A.it gets larger B.it gets smaller C.it does not change D.all of the above

Thirty-eight percent of consumers prefer to purchase electronics online. You randomly select 16 consumers. Find the probability that the number who prefer to purchase electronics online is at most 3. 0.088 0.912 0.027 0.380

convert the number 0.00706 into scientific notation. Include the correct number of significant figures

In a certain year,27.7%of all light vehicles were light trucks,27.7%were SUVs, and44.6%were cars. The probability that a severe side-impact crash would prove deadly to a driver depended on the type of vehicle he or she was driving at the time, as shown in the table. What is the probability that the victim of a deadly side-impact accident was

Please explain how to solve. 5.(20 pts) Let X1, ..., Xn be a random sample from a uniform distribution with pdf: f ( x ) =- 1 20+3' -20 - 3
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A study was made by a retail merchant to determine the relation between weekly advertising expenditure and sales. The following data were recorded: - [1+1+1+1] Advertising Costs (x) Sales (y) 40 20 25 20 30 50 40 20 50 385 400 395 365 475 440 490 420 560 a. Find equation of regression line b. Interpret regression coefficient and y intercept c.

Please help with statistical mathematics question below: \f
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A person with a consistent PR interval of 0.24 seconds (6 small boxes) is said to have a rhythm with WHAT? A) First-degree AV block, B) Second-degree AV block, Type I, Mobitz I, OR C) Third-degree AV block

What can you conclude from this output from a linear regression analysis of GRE scores and grades that results in the following data: the slope coefficient (B) for GRE scores is .037 with a significance level of .018?

Article Assignment #2 Submit your assignment to D2L by the due date. Please use the library to find and access the following article: Title: The Effectiveness of Daily Mindful Breathing Practices on Test Anxiety of Students Authors: Hyunju Cho, Seokjin Ryu, Jeeae Noh, Jongsun Lee Journal: PLOS ONE Year: 2016 Volume: 11(10) There is a paragraph on

Find the graph of the inequality Find the graph of the inequality y s - 3x+1. (0, 1) (3, 0 ) O A. 5 5- t (0, 1) (3, 0) O B. -5- (0, 1) (3, 0) O C. (0, 1) (3, 0) O D. 5 -5- SUBMIT - PREVIOUS
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A large diamond with a mass of 481.3 grams was recently discovered in a mine. If the density of the diamond is 3.51, what is the volume? Round your answer to the nearest hundredth. (1 point) 48.23 cm 3 55.91 cm 3 58.71 cm 3 137.12 cm 3

(1 point) What is the matrix P = (P; ,) for the projection of IR onto the subspace V spanned by the vectors a a2 CO 3 P11 = P12 = P13 = P21 = P2 2 = P23 = P31 = P3 2 - P3 3 = What is the projection p of the vector b = onto this subspace? P1 = P2 P3 Note: You can earn partial credit on this problem. Preview My
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I need help figuring this one out Fred and Ed each have a bag of candy containing a lemon drop (LD), a cherry drop(CD), and a lollipop (LP). Each takes out a piece from their own bag and eats it. What are the possible pairs of candies eaten? a. LD-LD, CD-LD, LP-LP, LD-LP, CD-CD, LD-LP, LP-CD, CD-LD, LP-LD b. LD-CD, LD-CD, LD-CD, LD-LP, LD-LP,

use your plan from question 2 to find when smartphone manufacturers were shipping 750 million smartphones to stores around the world. if you are solving algebraically, explain which properties of logarithms you used and why

write numbers to the three decimal places (e.g., 1.964). X follows a normal distribution with mean of 55 and SD of 17. What is the value of x such that: a) the probability of exceeding x is 57%. b) the probability of exceeding x is 73%. c) the probability of being less than x is 36% d) the interval contains 67% of all possible values. e) the

Conduct an hypothesis test with a=0.05 . Claim the average age of online students is 32 years old. -what is the null hypothesis -what is the alternative hypothesis -what distribution should be used -what is the test statistic -what is the p-value -what is the conclusion Ages are:

Can you help with this please? QUESTION 5 A marketer runs a regression model to compare product sales to add budget. Her output contains the following Coefficients Standard Error Intercept 784.3041935 128.914021 AD Budget 18.813 4.678 What is the value of the test statistic for the hypothesis test Ho:31=0. Enter your answer to 3 decimal places
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A burglary suspect was captured on film. The shadow of the suspect is measured 9 feet. If the angle of elevation, measured from the edge of the shadow to the light is 32 degrees estimate the height of the suspect. Round the answer to two decimal places. Please help me figure out word problems similar to these with the correct formula. Thanks in

By considering the intervals In := [n, ), show that the conclusion of the nested interval theorem may fail if we do not work with bounded intervals

Alcohol use by high school seniors in a certain state decreased from 46.4% in 2000 to 35.9% in 2015. Describe this change as an absolute change in terms of percentage points and as a relative change in terms of a percentage. The percentage of high school seniors using alcohol decreased by._____ percentage points.'' The percentage of high school

Simplify. Don't leave answers with zero or negative exponents. Rationalize all denominators. Assume all variables are positive. (16x^16y^-4)^3/2

How much would you need to deposit today into an account earning 7.84 per cent per annum compounded quarterly, to have $7,687 at the end of the 20 years? Please give your solution correct to 2decimalplaces

Please help with this problem. Suppose it is known that the average salary at a company is $49,032 with a standard deviation of $9,956.You think that women get paid less than average.Your sample of 32 women employees has a mean salary of $46,860.Conduct a hypothesis test using a = 0.025.

A researcher studying public opinion of proposed Social Security changes obtains a simple random sample of 35 adult Americans and asks them whether or not they support the proposed changes. To say that the distribution of the sample proportion of adults who respond yes, is approximately normal, how many more adult Americans does the researcher

The data show the number of viewers for television stars with certain salaries. Find the regression equation, letting salary be the independent (x) variable. Find the best predicted number of viewers for a television star with a salary of $11 million. Is the result close to the actual number of viewers, 7.8 million? Use a significance level of

At In N Out Burger, drinks come in four sizes: small (12 oz), medium (22 oz), large (32 oz), or extra large (44 oz). The average adult stomach has a capacity of 30.4 ounces. A hamburger with onions has 395 calories. a. How many small drinks can you consume in order to fill your stomach? b. How many medium drinks can you consume in order to fill

If one applies a Bonferroni correction on 20 tests and another analyst applies a Bonferroni correction on just 10 out of the 20 tests.For the 10 tests that both analysts have in common, who will have more significant tests? a.CV can be used when sample size is not very big b.Variability in the train/test set split can be assessed for CV c.CV will

In a study of the accuracy of fast fooddrive-through orders, one restaurant had 32 orders that were not accurate among 373 orders observed. Use a 0.10 significance level to test the claim that the rate of inaccurate orders is equal to10%. Does the accuracy rate appear to beacceptable? The test statistic for this hypothesis test is ( ). The p value

mathematical concepts such as percentages, fractions, and ratios is essential when making decisions such as buying a home, investing in stocks, or comparing prices of goods. Math is also used in measuring time, distance, and speed, which is essential for transportation, communication, and navigation. DO ENTIRE QUESTIONs Read the problem carefully:
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1. You want to compute a 90% confidence interval for the mean of a population with unknown population standard deviation. The sample size is 30. The value of t* you would use for this interval is (a) 1.96 (b) 1.645 (c) 1.699 (d) 0.90 (e) 1.311 (f) None of the above
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6. Is in the less than 20 or in the 60 or greater age group given they watch Disney+. 7. watch Hulu or Netflix given they are between 19 and 60
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D. Argumento: El domingo anterior hizo un da soleado y Claudia fue a piscina de paseo. Hoy es un domingo soleado y Alejandro se va de paseo para el ro. Por lo tanto, cuando los das domingo estn soleados las personas salen de pase

Fred exercises regularly. His fitness log for the last 12 months shows that he jogged 30% of the days, rode his bike 20% of the days, and did both on 12% of the days. What is the probability that Fred would either jog or ride his bike on any given day? What is the probability that Fred would neither jog nor ride his bike on any given day?

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