A distribution of exam scores has a population mean of 90 and a populationstandard deviation of 10. In this distribution, Sharon's score is 9 pointsabove the mean, Jill has a z-score of +1.20, Steve's score is 1/2 standarddeviation above the mean, and Ramon has a score of X=110. List the fourstudents in order from highest to lowest score.a. Sharon, Ramon, Jill, Steveb. Ramon, Jill, Sharon, SteveO c. Ramon, Sharon, Steve, Jilld. Steve, Jill, Ramon, SharonO e. Ramon, Sharon, Jill, Steve

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Answered: A distribution of exam scores has a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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← A study commissioned by a clothing manufacturer measured the Waist Size of 250 men, finding a mean of 36.33 inches and a standard deviation of 4.02 inches. To explore how the mean might vary from sample to sample, they simulated by drawing many samples of size 2, 5, 10, and 20, with replacement, from the 250 measurements. The summary statistics for these simulations are shown below. Answer parts a through d below. Click the icon to view the summary statistics table. Click the icon to view the histogram of the measurements and histograms of the sample means for each simulation. a) According to the Central Limit Theorem, what should the theoretical mean and standard deviation be for each of these sample sizes? Complete the table below. (Round to three decimal places as needed.) n 2 5 10 20 Observed mean 36.314 36.314 36.341 36.339 Ask my instructor Theoretical mean Observed st. dev. 2.855 1.805 1.276 0.895 Theoretical st. dev. Summary Statistics Table n mean 36.314 2 st. dev 2.855…
Please solve for D,E, and F
The average annual precipitation in Vancouver, British Columbia is 1300 mm. Assuming that the distribution of precipitation amounts is approximately normal with a standard deviation of 230 mm, determine whether each of the following represents a fairly typical year, an extremely wet year, or an extremely dry year. Write a statement and explanation for each answer. a. Annual precipitation of 1600 mm. b. Annual precipitation of 1050 mm.
Your statistics teacher splurges on five comic books, spending $1230, $70, $540, $610, and $1600 on the books. Find the following for the amount spent on the books. 3. The mean. 4. The standard deviation. 5. The coefficient of variation.
In the 1992 presidential election, Alaska's 40 election districts averaged 2023 votes per district for President Clinton. The standard deviation was 555. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places. please answer all 3 subs C, D, and E c. Find the probability that a randomly selected district had fewer than 1989 votes for President Clinton. d. Find the probability that a randomly selected district had between 1938 and 2139 votes for President Clinton. e. Find the first quartile for votes for President Clinton. Round your answer to the nearest whole number.
Skye High School has a total of 500 graduates. The mean SAT score of Skye High School graduates is 947 with a standard deviation of 205. To get into a premier college, a student must score 1000 or more. If 60 students are selected at random, how many graduates can Skye High School expect to get into a premier college?
This histogram shows the heights of 20 students in a statistics class. Explain why it is not appropriate to find summary statistics for this distribution. Frequency 4- 3- 2- 1- T 0+ 60 65 70 75 Height (Inches) Choose the correct answer below. OA. Since there appear to be two modes, this data probably represents men and women and should be split into those two groups before finding any summary statistics. OB. The number of data values is too small for summary statistics to be meaningful. OC. Since the data appear to be bimodal, no other measures of center or spread can be calculated. OD. Since the distribution is not symmetric, summary statistics would be meaningless.
Q2. Define population in terms of statistics and describe why are samples needed and how are they collected. Give an example of a population and sample.
Use these Reading scores to anwser the following questions 7, 7, 8,10,14 ,11,13, 9, 8,12,15,15 A. Find the mean of the reading scores B. Write the value of the standard deviation in decimal form
Use z-scores to make the following comparison between students. a. Claudia has a score of 61. Her class had a mean score of 74 and a standard deviation of 4 . Convert Claudia's score to a z- score. b. Isabella has a score of 79. Her class had a mean test score of 82 and a standard deviation of 2. Convert Isabella’s score to a z-score. c. Based on the z-scores, which student did better on their test compared to their class (“had a better relative position”)?
Leave all probabilities as percentages. Define x on all problems with data. The number of patients coming into a dental clinic each day were 74, 52, and 83. a. Find the sample mean. b. Find the sample standard deviation. c. Find the population variance.
Look for a,b,c and d. Thanks

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