With a height of 64 in, Marvin was the shortest president of a particular club in the past century. The club presidents of the past century have a mean height of 74.2in and a standard deviation of 2.4 in.a. What is the positive difference between Marvin's height and the mean?b. How many standard deviations is that [the difference found in part (a)]?c. Convert Marvin's height to a z score.d. If we consider "usual" heights to be those that convert to z scores between -2 and 2, is Marvin's height usual or unusual?a. The positive difference between Marvin's height and the mean isiin.b. The difference isstandard deviations.(Type an integer or decimal rounded to two decimal places as needed.)c. The z score is.(Type an integer or decimal rounded to two decimal places as needed. )d. Is Marvin's height usual or unusual?UnusualUsual

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Answered: With a height of 64 in, Marvin was the…

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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Identify the symbols used for each of the following: (a) sample standard deviation; (b) population standard deviation; (c) sample variance; (d) population variance. If sample data consist of weights measured in grams, what units are used for these statistics and parameter a. The symbol for sample standard deviation is b. The symbol for population standard deviation is c. The symbol for sample variance is d. The symbol for population variance is If sample data consist of weights measured in grams, then correctly complete the following sentences. a. The unit for sample standard deviation would be b. The unit for population standard deviation would be C. The unit for sample variance would be ▼ d. The unit for population variance would be ▼ C
Questions A and B. Please!
A scale is known to be "low-calibrated" in that it measures an aluminum bar to be 4 grams lower than the actual weight. If ????μold is the mean of all possible measurements of the bar using the old calibration, and ????μnew is the mean of all possible measurements of the bar using a re-calibrated scale. It is desired that ????−????=4μnew−μold=4. Consider the test ?0:????−????=4H0:μnew−μold=4 vs. ?0:????−????≠4H0:μnew−μold≠4 Sample after calibration: mean is 95.8 , SD is 4.9 and sample size is 10 Sample before calibration: mean is 89.352 , SD is 4.2 and sample size is 62 We do not know population standard deviations. What is the p-value? (Hint: best to use software, or else the Desmos Calculator for the 2 sample T and Z test)
A company decides to investigate the amount of sick leave taken by its employees. A sample of seven employees yields the following numbers of days of sick leave taken in the past year. 1 1 3 0 0 63 Use this information to answer parts a through c. a. Find and interpret the range. The range is 6 days. Choose the correct interpretation of the range below. A. The largest difference between the mean and any other value is equal to the range. B. The number of days separating the fewest and most sick days taken is equal to the range. C. The range represents the average distance of an observation from the mean. D. The range gives the most useful value for measuring the spread of the data.
The Truly Amazing Dudes are a group of comic acrobats. The weights (in pounds) of the ten acrobats are as follows. 152 196 144 139 166 83 186 157 140 138 (a) Find the mean and standard deviation of the weights. (Round the answers to one decimal place.) x = s = (b) What percent of the data lies within one standard deviation of the mean?(c) What percent of the data lies within two standard deviations of the mean?
What is the population standard deviation using the following formula
Do question 3
Suppose there are 5 students in a room. The mean age is 19.8 years, and the median age is 19. If the youngest person leaves and is not replaced by another person, what happens to the mean and the median? O The mean and median increase. The mean increases, and the median either increases or stays the same. The mean increases, but it is impossible to determine whether the median increases, decreases, or stays the same. The mean increases, and the median stays the same. The median increases, and the mean either increases or stays the same.

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