The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. Anewly hired engineer at a start-up company believes that employees at start-up companies work more onaverage then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths inhours of their work week. Their responses are shown in the table below. Test the claim using a 10% level ofsignificance.Hours474755514865515250495154What are the correct hypotheses?Ho: Select an answer ✓ ? ✓Ha: Select an answer ✓Test Statistic=hoursBased on the hypotheses, find the following:p-value=hours(Give answer to at least 4 decimal places.)(Give answer to at least 4 decimal places).

The data shows the lengths in hours of their work week.

Answered: The work week for adults in the US that…

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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Teacher Salaries The following data represent salaries (in pesos) from a school in llocos Sur. 10,000 18,000 11,000 16,600 11,000 19.200 12,500 21,560 14,000 16,400 17,500 107,000 1. First, assume you work for the school board and do not wish to raise taxes to increase salaries. Compute the mean, median, and mode, and decide which one would best support your position to not raise salaries. Mean: |Median: Mode: Reason:
Employee Salary (K$) CEO 299 CTO 250 CIO 250 CFO 290 Manager 77 Manager 123 Manager 84 Manager 63 Manager 68 Manager 49 Manager 82 Manager 87 Supervisor 42 Supervisor 37 Supervisor 29 Supervisor 43 Supervisor 51 Supervisor 38 Supervisor 33 Supervisor 42 Supervisor 49 Worker 25 Worker 19 Worker 41 Worker 17 Worker 26 Worker 25 Worker 21 Worker 28 Worker 27 Look at the data and answer the questions. -what percentage of the employees make more than the mean salary? -what percentage of the employees make more than the median salary? -what percentage of the employees make more than the mode salary? -in his radio show A Prairie Home Companion host Garrison Keillor regularly tells his audience about Lake Wobegon, where "all the children are above average". Is that possible, with any of the meanings of "average"?
Lisa took a survey of her classmates' favorite sport and recorded their genders. The results are in the table below: Preferred Sport Football Baseball Basketball Tennis Other Total Girls 2 3 5 4 3 Boys 8 2 6 4 3 Total What is the marginal relative frequency of survey participants who prefer tennis?
The calorie counts for the 17 poultry brands are 129 112 102 106 94 101 97 99 141 113 115 132 86 133 302 146 134 a. Find the mean of the data set. b. Find the Five-number summary of the data set. c. From part (a) and (b), describe the overall distribution of the data set for a non-statistician employer. For example, do you see any kind of skewness in the data set? Is there any outlier? Why?
A retail store started a new inventory system on January 1, 2019. The loss prevention manager compared the number of units that were missing from each month's inventory in 2018 with the number of units that were missing from each month's inventory in 2019. The results are provided in the table below. 2018 2019 87 7171 79 75 91 67 78 76 82 68 75 65 88 72 86 75 83 64 77 70 89 73 83 63 What conclusion could be made using the median and interquartile range from the data? The median for 2018 is 83, which is greater than 70.5, the median for 2019. The interquartile range for 2018 is 9, which is greater than the interquartile range for 2019, 8. The median for 2018 is 6969, which is less than 82.5, the median for 2019. The interquartile range for 2018 is 8.5, which is the same as the interquartile range for 2019. The median for 2018 is 83, which is greater than 71, the median for 2019. The interquartile range for 2018 is 16, which is greater…
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The average American spends $65.88 per month dining out (The Des Moines Register, December 5, 1997, USA). Asample of young adults provided the following dining out expenditure (in dollars) over the past month.253 101 245 467 131 0 22580 113 69 198 95 129 12411 178 104 161 0 118 15155 152 134 169 a. Compute the mean, median, and mode.b. Considering your results in part (a), do these young adults seem to spend about the same as an averageAmerican eating out?c. Compute the first and third quartiles.d. Compute the variance and standard deviation.
Explain TWO strengths in using mean as a measure of central tendency. The table represents the ages of 250 community women who participated in a gender sensitization forum. Study it and answer the questions that follow. Age (Years) Frequency Percentage Cumulative Frequency Cumulative percentage 21 – 25 16 6.4 16 6.4 26 – 30 29 11.6 45 18.0 31 – 35 43 17.2 88 35.2 36 – 40 47 18.8 135 54.0 41 – 45 56 22.4 191 76.4 46 – 50 37 14.8 228 91.2 51 – 55 18 7.2 246 98.4 56 – 60 4 1.6 250 100.0% Total 250 100.0 250 100 Calculate: The first quartile The third quartile The interquartile range The 45th percentile
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These data are the number of on-campus burglaries reported in a given year for nine western Pennsylvania universities. 16 10 4 16 9 8 12 5 16 For the above data set, find the mean, median, midrange, and mode. Round to one decimal place, if necessary.
The table below shows the scores of a group of students on a 10-point quiz. Test Score Frequency 3 1 4 1 7 4 8 4 9. 10 2 The mean score on this test is: The median score on this test is: Check Answer
A sample of 25 freshmen at a major university completed a survey that measured their degree of racial prejudice (the higher the score, the greater the prejudice) Compute the median and mean for these data? 10 43 30 30 45 40 12 40 42 35 45 25 10 33 50 42 32 38 11 47 22 26 37 38 10

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