The mean height of 50 male students whoshowed above average participation inCollege athletics was 68-2 inches with astandard deviation of 2-5 inches; while 50male students who showed no interest insuch participation had a mean height of67-5 inches with a standard deviation of2-8 inches. Test the hypothesis that malestudents who participate in collegeathletics are taller than other malestudents.

Answered: Image /qna-images/answer/bf36b803-20f1-44ec-9214-f3e66a3b6e9b.jpg

Answered: The mean height of 50 male students who…

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 mean height of 50 Male students who showed above-average participation in college athletics was 68.2 inches with a sd of 2.5 inches, while 50 students who showed no interest in such participation had a mean height of 67.5 inches with a standard deviation of 2.8 inches. Test the hypothesis that male students who participate in college athletics are taller than other male students at 0.1 level of significance.
The XY Institute has published figures on the annual kilowatt hours expended by various home appliances. It is claimed that vacuum cleaner expends an average of 46 kw-h per year. If a random samples of 12 homes included in the study that vacuum cleaners expends an average of 42 kw-h and std. deviation of 11.9 kw-h, does this suggest at the 0.025 level of significance that vacuum cleaners expend, on the average, less than 46 kw-h annually? Critical Region isTest statistic isDecision: (Accept or Reject)? the null hypothesis
The XY Institute has published figures on the annual kilowatt hours expended by various home appliances. It is claimed that vacuum cleaner expends an average of 46 kw-h per year. If a random samples of 12 homes included in the study that vacuum cleaners expends an average of 42 kw-h and std. deviation of 11.9 kw-h, does this suggest at the 0.025 level of significance that vacuum cleaners expend, on the average, less than 46 kw-h annually? Ans: Use 3 decimal places a. Critical Region is ______ b. Test statistic is ______ c. Decision: (Accept or Reject)? ______ the null hypothesis
The XY Institute has published figures on the annual kilowatt hours expended by various home appliances. It is claimed that vacuum cleaner expends an average of 46 kw-h per year. If a random samples of 12 homes included in the study that vacuum cleaners expends an average of 42 kw-h and std. deviation of 11.9 kw-h, does this suggest at the 0.025 level of significance that vacuum cleaners expend, on the average, less than 46 kw-h annually? Use hypothesis testing
A computer manufacturer claimed that the mean weight of their laptops is 5.5 pounds. A sample of 125 of their laptops showed that they had a mean weight of 5.1 pounds, with a sample standard deviation of 1.1 pounds. With a 5% level of significance, test this hypothesis.
The Hamazon Institute has published figures on the annual kilowatt hours expended by various home appliances. It is claimed that vacuum cleaner expends an average of 46 kw-h per year. If a random samples of 12 homes included in the study that vacuum cleaners expends an average of 42 kw-h and std. deviation of 11.9 kw-h, does this suggest at the 0.025 level of significance that vacuum cleaners expend, on the average, less than 46 kw-h annually? Critical Region: Test Statistic: Decision (Accept or Reject):
The Hamazon Institute has published figures on the annual kilowatt hours expended by various home appliances. It is claimed that vacuum cleaner expends an average of 46 kw-h per year. If a random samples of 12 homes included in the study that vacuum cleaners expends an average of 42 kw-h and std. deviation of 11.9 kw-h, does this suggest at the 0.025 level of significance that vacuum cleaners expend, on the average, less than 46 kw-h annually? Critical Region: Test Statistic: Decision (Accept or Reject): (3 DECIMAL PLACES)
The manufacturer of a battery claims that the mean life of it is 8 months. An agency took a sample of 40 such batteries with a mean life of 7 months and a standard deviation of 2.25 month. Using 10% significance level, is there sufficient evidence to reject the claim?
A random sample of 50 bags of blue corn tortilla chips had a mean weight of 9.06 ounces, with a standard deviation of 0.05 ounces. A random sample of 50 jalapeno tortilla chips had a mean weight of 9.01 ounces, with a standard deviation of 0.03 ounces. At the 0.05 level of significance, test the claim that the mean fill of blue corn tortilla chip bags is the same as the mean fill of jalapeno tortilla chips.
A local church parish wants to raise money to add to their campus. In a sample from a previous fund raising campaign, the parish found that of the 135 people in the sample they contacted, that 68 actually contributed money. Of those that contributed money, the average contribution was $882 with a standard deviation of $242. In the recent fundraising campaign, a sample of 91 people revealed that 56 have contributed money with an average contribution of $1160 and a standard deviation of $335. When testing (at the 5% level of significance) whether the proportion of peole who are contributing has increased, what is the test statistic? (please round your answer to 2 decimal places)
A fruit-packing company produced peaches last summer whose weights were normally distributed with mean 13 ounces and standard deviation 0.4 ounce. Among a sample of 1,000 of those peaches, about how many could be expected to have weights of atleast 13 ounces?
The Edison Electric Institute has published figures on the number ofkilowatt hours used annually by various home appliances. It is claimed thata vacuum cleaner uses an average of 46 kilowatt hours per year. If arandom sample of 13 homes included in a planned study indicates thatvacuum cleaners use an average of 47 kilowatt hours per year with astandard deviation of 12.9 kilowatt hours, does this suggest at the 0.05level of significance that vacuum cleaners use, on average, greater than 46kilowatt hours annually? Assume the population of kilowatt hours to benormal.a. Solve using actual z or t value (whichever is applicable)b. Solve using p-value

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