An airline company is interested in improving customer satisfaction rate from the 65% currently claimed.The company sponsored a survey of 189 customers and found that 131 customers were satisfied.Determine whether sufficient evidence exists that the customer satisfaction rate is higher than the claim bythe company.What is the test statistic z? Ex: 1.23What is the p-value? Ex: 0.456Does sufficient evidence exist that the customer satisfaction rate is different than the claim by the companyat a significance level of a = 0.1?Select

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Answered: An airline company is interested in…

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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The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 10% level of significance. Give answer to at least 4 decimal places. Hours 48 46 53 51 49 68 47 60 48 49 52 55 What are the correct hypotheses? Ho: Select an answer hours H1: Select an answer hours Based on the hypotheses, find the following: Test Statistic= p-value= The correct decision is to Select an answer O that the mean number of The correct summary would be: hours of all employees at start-up companies work more than the US mean of 47 hours. Select an answer
The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 1% level of significance. Give answer to at least 4 decimal places. Hours 45 40 54 54 45 68 48 58 49 50 50 55 What are the correct hypotheses? Ho: Select an answer v hours H: Select an answer v hours Based on the hypotheses, find the following: Test Statistic= p-value= The correct decision is to Select an answer v that the mean number The correct summary would be: Select an answer of hours of all employees at start-up companies work more than the US mean of 47 hours.
The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 1% level of significance. Give answer to at least 4 decimal places. Hours 45 49 51 55 47 68 46 55 45 49 53 51 47 hours a. What are the correct hypotheses? Ho H Hyp 47 Based on the hypotheses, find the following: b. Test Statistic = esc K 0 71 hours #3 72 W Q D 64 25 ום
A newspaper claims that the mean time spent on physical activities by middle school children in UAE is less than 30 minutes per day. To test this claim, a random sample of 20 children was selected and yielded a test statistic of t=-2.15. What is the corresponding p-value of the test? 0.978 0.045 0.022 0.016
calculate the test statistic only.
The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 1% level of significance. Give answer to at least 4 decimal places. Hours 50 46 55 52 45 66 58 60 46 46 52 53 What are the correct hypotheses? H0: hoursH1: hours Based on the hypotheses, find the following:Test Statistic=p-value= The correct decision is to . The correct summary would be: that the mean number of hours of all employees at start-up companies work more than the US mean of 47 hours.
The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 5% level of significance. Give answer to at least 4 decimal places. Hours 46 42 54 54 48 62 58 47 49 48 53 52 a. What are the correct hypotheses? Ho: Select an answer b. Test Statistic = ♥ H₁: Select an answer ? Based on the hypotheses, find the following: c. p-value = ? hours hours O d. The correct decision is to Select an answer e. The correct summary would be: Select an answer that the mean number of hours of all employees at start-up companies work more than the US mean of 47 hours.
Reports show that 92% of online searches in March 2021 use Google as the search engine. A network administrator wants to determine whether the percentage of searches that use Google is different in their company. They sample 800 searches and find that 758 of them use Google. Can they conclude that the percentage of searches that use Google in this company differs from 92%? Use the a = 0.05 level of significance.
The amount of sodium(in milligrams) in one serving for a random sample of three different kinds of foods is listed here. At the 0.05 level of significance, is there sufficient evidence to conclude that a difference in mean sodium amounts exists among condiments, cereals, and desserts?
An airline company is interested in improving the customer satisfaction rate from the 74% currently claimed. The company sponsored a survey of 176 customers and found that 139 customers were satisfied. What is the test statistic z? Ex: 2.22 What is the p-value? Ex: 0.123 Does sufficient evidence exist that the customer satisfaction rate is higher than the claim by the company at a significance level of a = 0.01? Ex: yes or no
The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 5% level of significance. Give answer to at least 4 decimal places. Hours 46 49 58 55 49 68 45 48 46 45 51 50 What are the correct hypotheses? H0: hoursH1: hours Based on the hypotheses, find the following:Test Statistic=p-value= The correct decision is to . The correct summary would be: that the mean number of hours of all employees at start-up companies work more than the US mean of 47 hours.
The work week for adults in the US that work full time is normally distributed with a mean of 47 hours. A newly hired engineer at a start-up company believes that employees at start-up companies work more on average then most working adults in the US. She asks 12 engineering friends at start-ups for the lengths in hours of their work week. Their responses are shown in the table below. Test the claim using a 10% level of significance. Give answer to at least 4 decimal places. Hours 49 40 58 52 49 70 49 59 47 49 53 55 What are the correct hypotheses? H0: hoursH1: hours Based on the hypotheses, find the following:Test Statistic=p-value= The correct decision is to . The correct summary would be: that the mean number of hours of all employees at start-up companies work more than the US mean of 47 hours.

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