You work for a consumer watchdog publication and are testing the advertising claims of a tire manufacturer. The manufacturer claims that the life spans of the tires are normally distributed, with a mean of 40,000 miles and a standard deviation of5500 miles. You test 16 tires and get the following life spans. Complete parts (a) through (c) below.48,945 42,213 24,051 36,117 32,209 41,001 42,888 37,719 D23,231 29,347 34,274 36,641 30,122 36,334 33,621 44,904(a) Draw a frequency histogram to display these data. Use five classes. Choose the correct answer below.OB.Life spans of tiresOc.Life spans of tiresLife spans of tires25Distance (in miles)4Distance (in miles)Distance (in miles)Is it reasonable to assume that the life spans are normally distributed? Why? Choose the correct answer below.O A No, because the histogram is neither symmetric nor bell-shaped.O B. Yes, because the histogram is neither symmetric nor bell-shaped.c. Yes, because the histogram is symmetric and bel-shaped.O D. No, because the histogram is symmetric and bell-shaped.(b) Find the mean of your sample.The mean is (Round to one decimal place as needed.)

Answered: You work for a consumer watchdog…

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 developmental psychologist is interested in studying how long babies gaze at a photograph of a human face. To test this question, she shows a picture to a sample of six babies and records the length of their gaze in seconds. The data are as follows: 12, 17, 18, 20, 20, 29. Calculate the mean, median, mode, range, variance and standard deviation for the sample.
Consider the given data set. n = 12 measurements: 9, 8, 1, 5, 5, 7, 5, 6, 8, 7, 2, 0 Find the mean. USE SALT Find the standard deviation. (Round your answer to four decimal places.) z = Find the z-score corresponding to the minimum in the data set. (Round your answer to two decimal places.) Find the z-score corresponding to the maximum in the data set. (Round your answer to two decimal places.) z = Do the z-scores indicate that there are possible outliers in the data set? Since the z-score for the larger observation is larger than 2 in absolute value, the larger value is unusually large. Since both z-scores exceed 2 in absolute value, both of the observations are unusual. Since neither z-score exceeds 2 in absolute value, none of the observations are unusually small or large. Since the z-score for the smaller observation is larger than 2 in absolute value, the smaller value is unusually small.
The ages in years of a random sample of shoppers at a gaming store are shown. Determine the range, mean, variance, and standard deviation of the sample data set 12,17,23,14,17,16,20,17,13,15
Using PivotTables, find the mean and standard deviation of sales by region in the data provided. LOADING... Click the icon to view the data. Question content area bottom Part 1 Complete the table below. (Type integers or decimals rounded to two decimal places as needed.) Average of Amount StdDev of Amount East enter your response here enter your response here North enter your response here enter your response here South enter your response here enter your response here West enter your response here enter your response here Grand Total enter your response here enter your response here
You work for a consumer watchdog publication and are testing the advertising claims of a tire manufacturer. The manufacturer claims that the life spans of the tires are normally distributed, with a mean of 40,000 miles and a standard deviation of 4500 miles. You test 16 tires and get the following life spans. Complete parts (a) through (c) below. 48,250, 43,242, 27,538, 38,187, 30,583, 40,298, 40,623, 35,366, 24,131, 33,680, 38,592, 36,796, 32,216, 37,370, 36,319, 47,459 Draw a frequency histogram to display these data. Use five classes. Then choose the from a, b, or c, for the correct answer below.
Calculate the mean, median and sample standard deviation for the following data. 1, 5, 2, 6, 8
You work for a consumer watchdog publication and are testing the advertising claims of a tire manufacturer. The manufacturer claims that the life spans of the tires are normally distributed, with a mean of 40,000 miles and a standard deviation of 6500 miles. You test 16 tires and get the following life spans. Complete parts (a) through (c) below. 47,493 39,585 28,756 36,034 30,952 38,287 42,718 34,078 D 24,464 29,573 37,049 36,753 32,401 36,752 34,850 44,188 (a) Draw a frequency histogram to display these data. Use five classes. Choose the correct answer below. OA. OB. Oc. Life spans of tires Life spans of tires. Life spans of tires 45,15 26, 451905 26,75 45,1905 Distance (in miles) Distance (in miles) Distance (in miles) Is it reasonable to assume that the life spans are normally distributed? Why? Choose the correct answer below. O A. No, because the histogram is symmetric and bell-shaped. O B. Yes, because the histogram is neither symmetric nor bell-shaped. O C. Yes, because the…
z Scores LeBron James, one of the most successful basketball players of all time, has a height of 6 feet 8 inches, or 203 cm. Based on statistics from Data Set 1 “Body Data” in Appendix B, his height converts to the z score of 4.07. How many standard deviations is his height above the mean?

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