Homework Answers
The hypothesis test usually use to the percentage or proportion of population is Z-test (binomial test).
Here, the hypothesis test to use is
Two proportions
Question 10.
Since , we are comparing the percent of managers that pay over 8 dollar for lunch per day with the percent of technicians.
So, the hypothesis test to use is
Two proportions
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One hundred men and one hundred women are surveyed to determine if the percent of women...
9. One hundred men and one hundred women are surveyed to determine if the percent of...
9. One hundred men and one hundred women are surveyed to determine if the percent of women that lie about their weight is the same as the percent of men, or if the percent of women is higher than the percent of men. The hypothesis test to use is ______________. a. independent group means, population standard deviations known b. two proportions c. independent group means, population standard deviations unknown d. matched or paired samples 10. Fourteen cars from two different...
Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if the...
Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if the smaller model uses less energy than the larger model. The energy was measured in kilowatt hours per month (kwh/mo). From years of testing these models, it is known that the standard deviation of kwh/mo is 34 kwh/mo for the smaller model and 40 kwh/mo for the larger one. From this survey, the sample means and standard deviations are 125 and 34, and 90 and...
1. Twelve pairs of identical twins that were separated at birth are reunited at age 21....
1. Twelve pairs of identical twins that were separated at birth are reunited at age 21. Each twin is weighed. Of interest is if identical twins raised separately will weigh within 10 pounds of each other as young adults. The sample average difference was 12.1 pounds with a standard deviation of 3.4 pounds. If we conduct a hypothesis test, the distribution to use is ______________. a. Normal b. Binomial c. Student-t with df = 24 d. Student-t with df =...
Please help. One hundred people participate in a multiplication study. They are timed to see how...
Please help. One hundred people participate in a multiplication study. They are timed to see how many single digit multiplication problems they can answer in their head without a mistake. Then, they each repeat the task with their eyes closed. For each individual, the difference in times is calculated. The purpose of the study is to determine if having your eyes opens slows down the time it takes to multiply. The hypothesis test to use is a. independent group means,...
Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if the...
Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if the smaller model uses less energy than the larger model. The energy was measured in kilowatt hours per month (kwh/mo). From years of testing these models, it is known that the standard deviation of kwh/mois 34 kwh/mo for the smaller model and 40 kwh/mo for the larger one. From this survey, the sample means and standard deviations are 125 and 34, and 90 and 40,...
Fifty married couples attend a retreat. The ages of the wife and husband in each relationship...
Fifty married couples attend a retreat. The ages of the wife and husband in each relationship is subtracted. Of interest is if people tend to marry others within 5 years of each other. The hypothesis test to use is independent group means, population standard deviations known independent group means, population standard deviations unknown matched or paired samples O two proportions Question 8 1 pts Fifty married couples attend a retreat. The ages of the wife and husband in each relationship...
1. Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if...
1. Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if the smaller model uses less energy than the larger model. The energy was measured in kilowatt hours per month (kwh/mo). From years of testing these models, it is known that the standard deviation of kwh/mo is 34 kwh/mo for the smaller model and 40 kwh/mo for the larger one. From this survey, the sample means and standard deviations are 125 and 34, and 90...
Indicate if the hypothesis test is for independent group means, population standard deviations, and/or variances known...
Indicate if the hypothesis test is for independent group means, population standard deviations, and/or variances known independent group means, population standard deviations, and/or variances unknown matched or paired samples single mean two proportions single proportion 1. Varsity athletes practice five times a week, on average. 2. A new WiFi range booster is being offered to consumers. A researcher tests the native range of 12 different routers under the same conditions. The ranges are recorded. Then the researcher uses the new...
To determine if practicing yoga affect stress level differently between men and women, a group of...
To determine if practicing yoga affect stress level differently between men and women, a group of 48 men and 56 women were evaluated to see if their cortisol level changes are different. The alternative hypothesis/directionality of the test is: A. directional B. non-directional OC. cannot be determined Previous studies have shown that the people in town X has an average cortisol level of 15 mcg/dL. We believe that those with chronic conditions or acute illnesses have elevated cortisol level. A...
f test, 1propZtest, ttest, 2propZtest, Ztest , ANOVA, chi squared test, ttest on the differences, 2sampttest, linr...
f test, 1propZtest, ttest, 2propZtest, Ztest , ANOVA, chi squared
test, ttest on the differences, 2sampttest, linregttest
Match the hypothesis test with the corresponding calculator function mean (population standard deviation known) Select Answer mean (population standard deviation unknown) Select Answer matched pairs Select Answer correlation Select Answer 2 proportions Select Answer test for independence Select Answer 2 means (independent samples) Select Answer proportion Select Answer
Match the hypothesis test with the corresponding calculator function mean (population standard deviation known) Select...
Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if the smaller model uses less energy than the larger model. The energy was measured in kilowatt hours per month (kwh/mo). From years of testing these models, it is known that the standard deviation of kwh/mo is 34 kwh/mo for the smaller model and 40 kwh/mo for the larger one. From this survey, the sample means and standard deviations are 125 and 34, and 90 and...
Forty refrigerators from two different models of a refrigerator manufacturer are compared to see if the smaller model uses less energy than the larger model. The energy was measured in kilowatt hours per month (kwh/mo). From years of testing these models, it is known that the standard deviation of kwh/mois 34 kwh/mo for the smaller model and 40 kwh/mo for the larger one. From this survey, the sample means and standard deviations are 125 and 34, and 90 and 40,...
Fifty married couples attend a retreat. The ages of the wife and husband in each relationship is subtracted. Of interest is if people tend to marry others within 5 years of each other. The hypothesis test to use is independent group means, population standard deviations known independent group means, population standard deviations unknown matched or paired samples O two proportions Question 8 1 pts Fifty married couples attend a retreat. The ages of the wife and husband in each relationship...
To determine if practicing yoga affect stress level differently between men and women, a group of 48 men and 56 women were evaluated to see if their cortisol level changes are different. The alternative hypothesis/directionality of the test is: A. directional B. non-directional OC. cannot be determined Previous studies have shown that the people in town X has an average cortisol level of 15 mcg/dL. We believe that those with chronic conditions or acute illnesses have elevated cortisol level. A...
f test, 1propZtest, ttest, 2propZtest, Ztest , ANOVA, chi squared
test, ttest on the differences, 2sampttest, linregttest
Match the hypothesis test with the corresponding calculator function mean (population standard deviation known) Select Answer mean (population standard deviation unknown) Select Answer matched pairs Select Answer correlation Select Answer 2 proportions Select Answer test for independence Select Answer 2 means (independent samples) Select Answer proportion Select Answer
Match the hypothesis test with the corresponding calculator function mean (population standard deviation known) Select...
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