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At a local university, a sample of 49 evening students was selected in order to determine whether the average age of the evening students is significantly different from 21. The average age of the students in the sample was 23 years. The population standard deviation is known to be 3.5 years. Use the critical value approach to determine whether or not the average age of the evening students is significantly different from 21. Use a 0.01 level of significance.
HO: μ "State the null hypothesis."HA: μ "State the alternativel hypothesis."
"State the rejection rule"
"Compute the test statistic for the test stated in the problem"
"State if you reject or fail to reject the null hypothesis."
What is the approximate estimated bootstrap standard error of the median, What is the approximate bias of the median estimated from bootstrapping - What is the bootstrap t confidence interval for the median
I am conducting research on microscopic toolmark analysis. If I have a toolmark with 27 striations (lines) of varying spatial relationships (orientations),
Determine the level of measurement for these items related to the newspaper business? The following data gives the weekly amounts spent on groceries for sample of households.
Obtain a test statistic and p -value assuming equal variances. Interpret these results.
Suppose that p = P(female birth) = 0.5. A couple wishes to have exactly one female child in their family. They will have children until they have a girl, then they will stop having children. What is the probability that the family has three childre..
What are the strengths and weaknesses of nonparametric tests? Can the outcomes of the nonparametric tests be generalized to populations?
The Swansons are planning to fly to Hawaii from Toronto with a stopover in Los Angeles. There are five flights they can take between Toronto and Los Angeles and ten flights between Los Angeles and Hawaii.
Conduct the hypothesis test and provide the test statistic, critical value and/or P- value and state the conclusion.
A shoe salesman want to see if his female customers have a preference in the color of shoe purchased. What is the test value for the following data?
If a male soldier and female soldier are paired up what will be the mean and standard deviation for the difference in heights for each possible pair?
A processor of carrots cuts the green top off each carrot, washes the carrots, and inserts six to a package. Twenty packages are inserted in a box for shipment. To test the weight ofthe boxes, a few were checked.
If battery posts are larger than 3.5 centimeters or less than 3.30 centimeters, they will be scrapped. Determine the proportion scrapped?
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