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 1% level ofsignificance. Give answer to at least 4 decimal places.Hours494759514769536046465554a. What are the correct hypotheses?Ho: Select an answerH₁: Select an answer ? O?Based on the hypotheses, find the following:b. Test Statistic =c. p-value =hoursmath.comhoursd. The correct decision is to Select an answere. The correct summary would be: Select an answerhours of all employees at start-up companies work more than the US mean of 47 hours.Question Help: Video Message instructorthat the mean number of

Answer Given,The level of significance = 1% = 0.01The sample size [n] = 12

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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A study analyzed the sustainability behaviors of CPA corporations. The level of support for corporate sustainability (measured on a quantitative scale ranging from 0 to 160 points) was obtained for each in a sample of 984 senior managers at CPA firms. The CEO of a CPA firm claims that the true mean level of support for sustainability is 66. Complete parts a through e. What is a Type II error in this problem? A. A Type II error would be to conclude that the true mean level of support for sustainability is 66 when, in fact, the mean is not equal to 66. B. A Type II error would be to conclude that the sample mean level of support for sustainability is less than 66 when, in fact, the sample mean is greater than 66. C. A Type II error would be to conclude that the true mean level of support for sustainability is not 66 when, in fact, the mean is equal to 66. D. A Type II error would be to conclude that the sample mean level of support for…
The Chicago Cubs win an average of 56.8% of all their games. How should this data be classified? A. None of these Options B. Quantitative C. Qualitative D. Categorical
A study was undertaken to see how accurate food labeling for calories on food that is considered reduced calorie. The group measured the amount of calories for each item of food and then found the percent difference between the measured and labeled amount of calories. The group also looked at food that was nationally advertised, regionally distributed, or locally prepared. Do the data indicate that at least one of the mean percent differences between the three groups is different from the others? The data is summarized in the table below. National Mean Standard Deviation Sample Size Local -2.1 Regional 27.1667 143.125 Fill in the hypotheses below: Ho: Select an answer Ha: Select an answer 10.3257 20.797 53.5922 20 12 8
. A Pew poll taken in 2010 surveyed 830 people aged 18-29 and found that 166 of them had one or more tattoos. Based on this survey, can you conclude that the percentage of people aged 18-29 who have a tattoo is less than 25%? Use the a = significance. 0.01 level of
How much time do Americans living in or near cities spend waiting in traffic, and how much does waiting in traffic cost them per year? The file “congestion.xlsx” includes this cost for 31 cities. For the time Americans living in or near cities spend waiting in traffic and the cost of waiting in traffic per year: (Please see the excel file. It is in the same location with this question file). a. Compute the mean, median, first quartile, and third quartile. (Use Excel -Data Analysis to solve this problem) b. Compute the range, interquartile range, variance, standard deviation, and coefficient of variation. (Use Excel -Data Analysis to solve this problem) c. Construct a boxplot. Are the data skewed? If so, how? d. Compute the correlation coefficient between the time spent sitting in traffic and the cost of sitting in traffic. e. Based on the results of (a) through (c), what conclusions might you reach concerning the time spent waiting in traffic and the cost of waiting in traffic.…
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The mean monthly food budget for 53 residents of the local apartment complex is $648 . What is the best point estimate for the mean monthly food budget for all residents of the local apartment complex?
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At their inauguration, the ages of the first six (out of a current number of 45) presidents of a certain country were 60, 51, 50, 58, 51, and 55 . Complete parts a and b below. a. Find the mean age at inauguration of the first six presidents. The mean is 54.254.2. (Round to the nearest tenth as needed.) The mean of the most recent six presidents was 51.6. Did the first six presidents tend to be a bit older or a bit younger than the most recent six presidents? older Your answer is correct. younger b. Find the standard deviation of the ages at inauguration of the first six presidents. The standard deviation is nothing. (Round to the nearest tenth as needed.)
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