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Q1) Recent study focused on number of times men and women who live alone buy take-out dinner in the month. Information is summarized below.
Men
Women
Sample Size
= 35
= 40
Sample Mean
= 24.51
= 22.69
Population Standard deviation
= 4.48
= 3.86
At.01 significance level, is there difference in mean number of times men and women order take-out dinners in month? Determine the p-value?
What percentage of the averages or medians of the sample will be greater than 140 seconds?
These can have a large impact on tenure and promotion decisions at many institutions. One particular instructor had ratings in 3 courses in one semester as given by the table below for the statement "The instructor is an excellent teacher.
how many individuals will I need to sample if I want a 95% margin of error to be no more than 3%, I want to know if the results are significant at = 10%. With the information given.
Using the simple test of independence (described in the lecture), decide if the events high calorie and high fiber are independent or dependent. Show your work.
Determine the probability of randomly selecting a person graduating with Master's degree who didn't major in Education.
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At.02 significance level is it sensible to conclude that mean number of shoes sold at mall stores is larger than at outlet stores?
Explain the logic of what you have done, writing as if you are speaking to someone who has never heard of correlation (but who does understand the mean, deviation scores, and hypothesis testing);
Table shows the smoking habits of group college students. If student is selected at random, determine the probability of getting someone who is man or a woman.
Now he wants to know if there is a difference between the three formats. Is there?
If a blue ball is selected you win nothing. Let X be the amount that you win. The expected value of X and let the random variable X be a random number with the uniform density curve given below
Find out optimal decision
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