S
  1. study help
  2. subject categories
  3. sciences
  4. mathematics
  5. september 2022
  6. 08

Mathematics Questions and Answers September 08, 2022

Expert-verified solutions to help you succeed

Cowboys have the reputation of being a"hard living, drinking, gambling group of people who are quick to draw and fire their pistols." In an attempt to either lend credence to or reject this idea, Connie Brooks collected the ages of 32 cowboys who lived in the southwest US around 1890. 585968867266978984 919192666887867361 707572738584905777

Quiz 6A 6B 6C Show all work for full credit. 1. A cardiologist has a medical office that treats adult male patients who have heart disease. Match the variable to the most appropriate distribution shape based on the scenario. You may only use your answer choices ONCE, and you MUST explain your choices for credit. Patient ages Shape of Distribution
image text in transcribed

1.Using the data sashelp.class in SAS, run a single sample t-test to determine if the mean of the incoming class of students at a private school in GA is different from the national average of 105 pounds. Use an alpha of .05. However, first test to see if weight is normally distributed. Include your code and a screenshot of the results. Also,
image text in transcribed

The weight of a small Starbucks coffee is a normally distributed random variable with a mean of 320 grams and a standard deviation of 14 grams. Find the weight that corresponds to each event. (Use Excel or Appendix C to calculate the z -value. Round your final answers to 2 decimal places.) a.Highest 30 percent b.Middle 70 percent to c.Highest 90

\f
image text in transcribed

Common Core State Standard: MATH.CONTENT.7.NS.A.1 Apply and extend previous understandings of addition and subtraction to add and subtract rational numbers; represent addition and subtraction on a horizontal or vertical number line diagram. DLM-7.RP.1. Compute unit rates associated with ratios of fractions, including ratios of lengths, areas, and

Hi! I need help with my stats practice question 2. Thirty-six percent of customers who purchased products from an e-commerce site had orders exceeding $100. But only 25% of the customers pay with the ecommerce site's sponsored credit card. If 20% of the customers have orders exceeding $100 and also pay with the e-commerce site's sponsored credit
image text in transcribed

Answer these questions: \fIdentify the statistical population, sample, and variable of interest in each of the following situations: (a) To learn about starting salaries for engineers graduating from a Midwestern university, twenty graduating seniors are asked to report their starting salary. (b) Fifty computer memory chips were selected from the
image text in transcribedimage text in transcribedimage text in transcribed

WHY WOULD BARBIE MOVIE (2023) BE A GOOD ARTIFACT FOR THE THEME MYTHS AND POPULAR ICONS

Which of the following is not true about "within-groups variance"? It is one of the sources of variance in an ANOVA test. It represents the individual differences of the participants in a group. It is also called "unsystematic variance" It is also called "systematic variance

Short description: A graph plots quantity against price in dollars. Long description: The horizontal axis representing quantity lists A to I from left to right. The vertical axis representing price in dollars lists the following values from bottom to top: P subscript 1, P subscript 2, P subscript 3, P subscript 4, and P subscript 5. The graph

A group of 115 men and 169 women are asked if they will vote in next year's election. 87 men and 69 women say they will vote. Which of the following statement are true? The marginal frequency of people who will not vote is 156. Given that the person is a man, the conditional relative frequency that he will vote is approximately 0.757. The

Find the average Cost per order for the orders that are: from Hulkey Fasteners with item cost less than $12 and A/P terms less than 32 months OR orders that are from Spacetime Technologies and item cost more than $1.6 and A/P terms more than 38 months

Halla la solucin de cada una de las siguientes ecuaciones lineales. Realiza cada paso ordenadamente. x27=89 8x+18=6x24 5x55=130 0.4x+2.4=1.23.2x 4712x+38=x+59

Home values in a town have declined 29% per year for each of the past four years. What was the total percentage decrease in home values during the four year period

13 - 0/1 PQINTS \\er wants to conduct a study to determine the number of patients in a dentist office who \\d the 78% Confidence Interval for the population proportion, which gives a z-score of 1 Error of no more than 18 percentage points. 2 minimum Sample Size
image text in transcribed

Parameters are the true values that exist within the population and that are generally unknowable 1) True 2) False

68. Another practice example. Hiv + Hiv - total positive 378 397 775 negative 2 98,823 98,825 total 380 99,220 100,000The website is below where you can practice calculating the validity measures. Source: https://www.med.soton.ac.uk/stats_eLearning/sensitivityspecificityppvandnpvquiz/index.html Sensitivity

Workers andsenior-level bosses were asked if it was seriously unethical to monitor employeee-mail. The results are summarized in the table to the right. Use a 0.05 significance level to test the claim that the response is independent of whether the subject is a worker or a boss Yes No Workers 195 250 Bosses 41 85 Find the value of the 2 test

Let N be the number of times we will toss a fair die, where N Z + and P(N = k) = 1/(2^k) for any k Z +. Let S be the sum of all the throws of the die. For example, say N turned out to be 5, then we toss the die 5 times. Say the outcomes are 6, 1, 1, 3, 4, 5, then S = 6 + 1 + 1 + 3 + 4 = 15. Calculate P(N = 2 | S = 5).

When writing content for text slides, limit the amount of text on each one and use them to : _______________ Question 6 options: Highlight key points Highlight weak points Highlight not so important points None of the above

Southwest AirTran Q2 The data show the number of minutes that delayed flights by AirTran Airways and Southwest 45 34 Airlines. Is there a difference in the number of delayed minutes between the two airlines. 64 59 Use a 0.01 significance level and assume there is unequal variance in the two samples. 42 43 Select one: 33 30 a. Yes, the difference

2. What is the volume of a cylindrical oil tank if the diameter of the base is 24 inches and the height is 4 feet? Answer in gallons

A researcher is interested in whether the color of the light impact happiness levels. A group of college students (n=27) complete a happiness survey under blue light and another group of college students (n=33) complete the same survey under red light. To analyze the data collected from this study, which of the following statistical methods could

Late assignment will be marked off ______ points each late day. Group of answer choices 4 10 2 3

The general wave function describing a sinusoidal one-dimensional traveling wave is y(x,t) . The similar-looking function y(x,t)=Acos2(kx t) also describes a one-dimensional traveling wave, although it is not sinusoidal. What is the wavelength of this new wave? Select one: a. k b. 2k c. 2 d. k Clear my choice

Hi need help here !! Question 4 of 13 (1 point) Attempt 1 of Unlimited 7.3 Section Exercis Manual Transmission Automobiles In a recent year, 6% of cars sold had a manual transmission. A random sample of college students who owned cars revealed the following: out of 123 cars, 30 had manual transmissions. Estimate the proportion of college students
image text in transcribed

\fCredit card example from class mate Before I was able to legally drink I was in search for the perfect credit card. I had attempted to buy a laptop from best buy, and was subsequently denied. My credit score was almost non existent. In an effort to avoid future embarrassment I went out to find myself the perfect credit card. What I found was

Compare the side of the Moon that faces us, centered on coordinate (0,0), to the back side. Estimate how many times more craters there are on the far side

Problem 2. (80 pts) Matrix Operations, Augmented Matrices, Matrix Inverses (a) Take matrices Perform the following matrix operations. If the solution does not exist, write "does not exist." (1) (2 pts. ) N +0 ONE Does not exist (1) (2 pta. ] NT - O (ii) (3 pto.) 2M . N 123 (67 4 412 (b) (2 pta.) Translate this system of linear equations into an
image text in transcribed

Please help Question 5 30 pts 5. A real estate investor buys two properties. Monthly net income from the rst property (an apartment building) is $1,800 times the number of apartments that are rented out, minus $1,500 in property taxes and maintenance expenses. The number of apartments that are rented out is a random variable, X, with mean 15 and
image text in transcribed

Suppose someone gives you 13 to 4 odds that you cannot roll two even numbers with the roll of two fair dice. This means you win $13 if you succeed and you lose $4 if you fail. What is the expected value of this game to you? Should you expect to win or lose the expected value in the first game? What can you expect if you play 100 times? Explain.
image text in transcribedimage text in transcribed

Drag the tiles to the correct boxes to complete the pairs. Match the pairs of variables with the type of relationship they show. the number of high school seniors and high school graduates the amount of snowfall and the number of voters the number of doctors and the number of nurses correlation without causation arrowRight correlation with

donc pour le mme graphique si on voulait voir 1 par la gauche serait-il 1 la limite ou + infini

Find the indicated z score. The graph depicts the standard normal distribution with mean = 0 and standard deviation = 1. \f
image text in transcribed

Please walk me through the following problem. Review the following information and provide the correct response. The manager of a local company gathered the following information on annual sales for new customer accounts and the number of years of experience for a sample of 10 salespersons. Salesperson Years of Annual Sales ($1000) Experience 1 1

An airline charges nothing for a suitcase up to 20 lb. For every pound over 20, the airline charges $2 per pound (only for pounds over 20). How much does the airline charge for a 35-lb. suitcase

Write a one-paragraph reflection on what you learned from this process and how this learning impacts your future practice
image text in transcribed

u(x)=x^2+3, w(x)=sqrt x+2, what is (u of w)(2) and (w of u)(2)

Find thex-values of all points where the function has any relative extrema. Find thevalue(s) of any relative extrema. \f
image text in transcribed

Quantitative method of accounting and Finance Scenario. You, as a property investor, are interested in understanding which factor (or factors) drives the prices of investment properties. A dataset is collected which contains the prices (in thousand dollars, as denoted by apart_price) for 50 one- bedroom apartments in city X, their corresponding
image text in transcribed

(3 points) A ball is thrown in the air from the top of a building. Its height, in meters above ground, as a function of time, in seconds, is given by h(t) = 4.9? + 15t + 18. How many seconds does it take to reach maximum height? Enter the answer with at least 3 decimal places. = [j help (hnumbers)
image text in transcribed

Consider a function G that maps students in a class to grades. The domain is the set of students in the class: {Yu, Kirstein, Alshahrani, Yarra, Mitchell, Feldman}.The codomain is the set of grades: {A, B, C, D, E, F}. Select all of the functions below that are bijections. Multiple select question. G(Yu) = A, G(Kirstein) = B, G(Alshahrani) = C,

A commercial aircraft gets the best fuel efficiency if it operates at a minimum altitude of 29,000 feet and a maximum altitude of 41,000 feet Model the most fuel- efficient altitudes using a compound inequality Ox 2 29,000 and x $ 41,000 Ox s 29,000 and x 2 41,000 Ox > 41,000 and x 2 29,000 Ox s 41,000 and x s 29,000

A government survey conducted to estimate the mean price of houses in a large metropolitan area is designed to have a margin of error of $10,000. Pilot studies suggest that the population standard deviation is $65,500. Estimate the minimum sample size needed to estimate the population mean with the stated margin of error at a 95% confidence

Which of the following statements are true for a normal probability distribution? I. The normal probability distribution is bell-shaped and has a single peak. II. The normal probability distribution is asymptotic at both ends. III. The normal probability distribution's mean cannot be negative.

Question 2. Consider a simple economy with two types of workers. There are capable workers (type A), constituting 70% of the population, with remaining workers (type B) being of average ability. There are two types of job opportunities as well, labeled Good and Bad. In a Bad job, either type of worker produces 20 units of output. In a Good job,
image text in transcribed

Revise to make this sound better: still have yet received your response. I know you said VR will only pay my rent while I am in school, but I would feel better if I could get your approval to renew my lease before I go ahead and sign the lease to ensure everything is in order. I would appreciate it if you could let me know as soon as possible so I

Why is it important to learn statistics in the study of psychology?

5. A cell-phone company wants to know the average number of text messages a teen sends per month. It commissions a study that asks a sample of 100 teens how many text messages they send per month. The study finds that the mean is 260 text messages, with a standard deviation of 40 text messages. What is the 95% confidence interval for the average

The 2016 Minneapolis Resident Survey was a questionnaire that the City of Minneapolis issued to its randomly chosen residents.In this survey, 1,155 of the 2,307 respondents (50.1%) rated their neighborhood as a very good place to live.After adjusting for the demographic characteristics of the population, the City of Minneapolis concluded with 95%

A research institute conducted clinical trials of a method designed to increase the probability of conceiving a boy. Among 159 babies born to parents using the?method, 130 were boys. Identify the margin of error and the?95% confidence interval for these clinical trials. what is the margin of error ? A research institute conducted clinical trials
image text in transcribed

The heights of American men aged 18 to 24 are normally distributed with a mean of 68 and a standard deviation of 2.8 inches. Answer the following questions. Half of all young men are taller than____ About 95% of all young men have heights between____ What is the probability that a man selected at random will have a height above 72 inches? Suppose

what measurements do you use and how do you interpret a null hypothesis

A combination lock uses 3 numbers, each of which can be 0 to 36. If there are no restrictions on the numbers, how many possible combinations are available?

(16) To test whether the mean time to mix a batch of adhesive is the same for machines produced by four manufacturers, TiteBondMax obtained see below on the time (minutes) needed to mix the materials. Test whether the machines have equal mean mixing time at proportional to = 0.01. Manufacturer A 25 23 21 23 B 23 21 23 24 C 25 25 25 21 D 28 27 28

Question 7 X What internal consistency estimates of reliability may be used with test composed of items that are not dichotomously scored? Selected Answer: c. KR21 Answers: a. Cronbach's alpha b. KR20 C. KR21 d. All of the above Question 8 X For what types of situations may generalizability theory be used to estimate reliability? Selected Answer:
image text in transcribed

You have been asked by the sales and marketing department to obtain some initial customer feedback on six new mobile phone models that your company is considering selling. The plan is to successively show each phone to a sample of customers for 30 seconds to gauge their initial reaction to the new models. You are concerned that the order in which

Complete the sentence below. For a circle, the ______ is the distance from the center to any point on the circle. Question content area bottom Part 1 For a circle, the unit radius intercept origin is the distance from the center to any point on the circle

Karen is planning to drive 1771 miles on a road trip. If she drives 253 miles a day, how many days will it take to complete the trip

Questions 24-27 are related to the following One of the different statistics reported by the Centers for Disease Control regarding incidence of obesity among adults in the United States provides that 29% of men with college degree are obese.The study also reports that 32.1% of men without a college degree are obese.Assume the latter statistic is

If you make a map using a combination of vector and raster data, then export that map as a JPEG image, what type of data is the resulting file? Group of answer choices Vector TIFF Neither vector nor raster JRPG Raster

Identify the transformations, create a table of key points and graph the function f ( x ) = 4 ( x + 5 ) 3 + 2 . a) Fill in the blanks to describe the transformations: The graph of f can be obtained from the graph of y = by first scaling the graph vertically by , then shifting the graph up Correct unit(s) and left Correct unit(s)

What are examples of variables that follow a binomial probability distribution? What are examples of variables that follow a discrete probability distribution such as the Poisson or geometric?

Open excel In one column enter8heights for 10 year old boys (inches) and in the second column enter 8 weights for 10 year old boys (pounds) . Ten year old boysheight ranges from 42 inches to 62 inches while theweight ranges from 60 to 90 pounds. You can make these up as long as they are reasonable if you do not have access to any data.We want to

A nonlinear regression model is given by the equation: \f
image text in transcribed

Plumbing vents must rise how far above the flood rim of fixtures, unless prohibited by structural conditions, before offsetting horizontally? 02 inches 3 inches 06 inches 12 inches

Solution please? Interpreting a Linear Equation Ashley invested some money in an account. The balance in the account is given by the equation B = 6100 - 120t where t is the number of years since the initial investment was made, and B is the account balance. The equation tells us that Ashley started with $ in the account, and that the balance in
image text in transcribed

In a study of frogs from Northern and Southern California, a 99% confidence interval for the difference in the median jump distance (in meters) is (-0.4, 0.2). a. From this, what do we know about Northern and Southern California frogs? Note: Amrhein et al. (2019), a week 1 reading, discusses how to interpret confidence intervals of an effect size.

R. TolenMiss Torres borrowed P65,450 from a savings and loan association that charges 7 % simple interest for 3 years. Find the: a. amount of interest per annum b. total amount of interest due on the loantino borrowed P32,000 for 1 year and 7 months. The amount of interest was P4,306.67. What was the rate of interest

Box 1 has 3 blue and 2 red balls. Box 2 has 1 blue and 4 red balls. A box is selected randomly and a ball is drawn. What is the probability that now box 2 has no blue ball

What is the area of the shaded region? Do not round your answer. Find the area of the shaded region. Do not round your answer. 2 yd 1 yd 4 yd 8 yd 4 yd 12 yd
image text in transcribed

an SQL statement to create table named riverview_customers, using a subquery based on table f_customers, to include the columns as displayed in the results listed below. FACULTY of INFORMATION and COMMUNICATIONS TECHNOLOGY DEPARTMENT of COMPUTER SCIENCE ASSIGNMENT 3 (2020) Subject Code : DS023AT/ISY23AB/SFW20AT Subject Name: Development Software
image text in transcribed

Monthly Profit of an Auto Repair Shop Month Jan-14 Feb-14 Mar-14 Apr-14 May-14 Jun-14 Jul-14 Aug-14 Sep-14 Profit ($) 15,305 15,455 14,255 16,309 17,963 17,130 19,149 18,380 20,157 Step 3 of 4 : Determine the exponential smoothing forecast for the next time period using a smoothing constant of 0.40 . If necessary, round your answer to one decimal

Again look at the example: me and a bunch of other people are doing x each week. For me, the private benefit of doing x is $250. There are no positive externalities from me doing x. The private cost is $225. The external cost is $75. If the choice is simply I do x or not (me doing x doesn't keep me from doing anything else), what do I have to do

A random sample of 1,092 people were asked whether color was consideration in buying a new car. CollegeBoard AP Classroom 2019 International Practice Exam MCQ Sarah Chugh the table. A random sample of 1,092 people were asked whether color was a consideration in buying a new car. They were also asked to identify one additional feature that was
image text in transcribed

If the correlation between two variables is .767, how much variance has not been accounted for?

A random variable X follows a continuous uniform distribution on (20, 45). What is P (30 < X < 40)?

Question 6 After a series discount of 9/24/12, the net cost of a computer system is $753.22. What is the list price? The list price of the system is $ (Round to the nearest cent as needed.)
image text in transcribed

some models can be expressed as a curve rather than a

Jepsen is in a geometry class and his instructor has shown the class how to complete geometry proofs. The proofs are problems that have a solution that students can find if the correct principles are followed. This is an example of a(n) ______ problem. a. ill-defined b. metacognitive c. cognitive operations d. well-defined

The price of a cup of coffee has risen to $2.60 today. Yesterday's price was $2.45. Find the percentage increase. Round your answer to the nearest tenth of a percent. 11 % X 5
image text in transcribed

a rancher in osceola county wants to build two congruent adjacent rectangular corrals along a river (with no fencing on the river) he has 1560 feet of fencing available for this job. Draw a picture to represent the corrals. Find the dimesions of the outer rectangle that would optimize the area and then find the area. Show all work in vertical

1.what technologies are used by juronghealth?what purpose do they serve? 2.search the web for rfid. suggest an example of using rfid for locating and tracking people? 3.what information systems are implemented by joronghealth?describe the input processing and output of any one such system 4.why are information systems important for juronghealth?

We wish to test the hypothesis that the male and female test scores on a test are essentially the same. The test scores from a random sample of students are stored in a vector SCORES and the genders of the students are stored in a vector SEX. What is the proper R command to test this hypothesis? Group of answer choices M==F t.test(Scores,M==F)

Professor Mann has determined that the final average in his statistics course is normally distributed with a mean of 72 and a standard deviation of 5. He decides to assign his grades for his current course such that the top 15% of the students receive an A. What is the lowest average a student can receive to earn an A?

Suppose you enter the following 2 commands in R. x

EC[max-exam score=100] to be admitted to widner-law your score on the LSAT needs to be in the top 2.5% or higher. If the mean LSAT score is 2000 with the standard deviation of 100, what minimum score would get you in.

6.10 A set of final examination marks in an introductory statistics unit is normally distributed with a mean of 73 and a standard deviation of 8. What is the probability of getting a mark of 91 or less? What is the probability that a student obtains a mark between 65 and 89? If the lecturer gives Distinction and High Distinction grades to the top

solve with step by step WhatsApp X VA Topic 4 - HW 3: (Differentials) - N X * Homework Help - Q&A from Onl X + X - > C A webassign.net/web/Student/Assignment-Responses/last?dep=24613322 ... 3. [-/1 Points] DETAILS SESSCALCET2 11.4.023. MY NOTES ASK YOUR TEACHER Find the differential of the function. R = aB cos y dR = Jaa + ( )ap + )dy 4. [-/1
image text in transcribed

1) If two variables are correlated .90, it means that they share 90% of their variance in common. True False 2)Under which one of the following conditions may a causal relationship between variables X and Y be inferred? -Whenever an investigation other than a correlation coefficient has shown them to be causally related. -Whenever the correlation

What was measured? Select all that apply. A. Percent profit B. Varieties of lettucelettuce grown C. Average priceprice per poundper pound D. Size E. State F. Value of business analysts G. Quantity of lettucelettuce grown H. Gross sales I. Time in existence J. This information is not given

You need to determine the inventory policy for product FB7056. The FB7056 is an industrial product that has very stable, uniform demand. The annual demand for the FB7056 is 3260 units and they come in cartons of 100 units each. The cost from the vendor is $45 per unit at their dock door. To have it delivered to your DC, you have to pay $15 per

7. Given a = [2, -10] and b = [-8, 23], find: a. 3a - 2b [2 marks] b. a . b [1 marks] C. a + b [2 marks] d. proj a [3 marks] e. The angle between a and 6 [2 marks] 8. Given p = -1, 4, -8] and 9 = [10, 10, -9], find: a. 2p + 5q [2 marks] b. p . q [2 marks] c. q x p [3 marks] d. p X q [1 marks] e. The angle between p and q [3 marks] f. proj-p [3
image text in transcribed

You need to purchase a plan for internet access from an ISP (Internet Service Provider). ISP A charges $109 a month plus 8% tax. ISP B charges $125 a month plus 8% tax, but also offers a 5% discount on timely payment. The discount can only be given on the service itself, not the tax, because the state requires that tax be paid on the full amount

Identify the transformations, create a table of key points and graph the function. f ( x ) = x + 2 a) Choose the correct transformations: Stretches/Shrinks (Scaling): No vertical stretch or compression Correct Reflections: Reflection across the y-axis (Horizontal Reflection) Correct Vertical Shift: Vertical shift up 2 units Correct Horizontal

How to make conclusion about hypothesis by just looking at the critical value and test statistic ? If our alternate hypothesis is H a : mu > 5 and test statistic is -2.14 and significance level 0.05. What will be the conclusion? Can you give more examples and detailed explanations ? What is chi square test for homogeneity and independence? I just

Analyze the following experiment.Do the following: (a)Write out an appropriate ANOVA model for this experiment.Your model should clearly define if any factors are crossed or nested or random, and should clearly define any indices used in the model. (b)Analyze the data in SAS.Examine residuals and make any transformations necessary.Using ANOVA

19. The mean amount of time spent at this traffic light was a. greater than the median. b. less than the median. c. about the same as the median. d. It is impossible to tell without the standard deviation
image text in transcribed

THIS IS A THREE PART QUESTIONS. ....... Consider the following table showing speed limits and death rates from automobile accidents in selected countries. Complete parts a through d. a Click here to view the table. a 5 z 1 0 Data Table 0 0 50 65 80 50 60 7o 60 Speed limit (mph) Speed limit (mph) la b- Compute rand r2- Death rate Speed limit
image text in transcribedimage text in transcribed

Showing 200 - 300 of 1529
  • 3 / 16