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The following problem should be answered in R. Any answers (partial or complete) would be greaty appreicated!
Generate 50 normal distributions with mean= 15 and standard deviation= 3 with a sample size of 30 each. For each of these data sets, calculate the 90% con dence interval.
(a) How many of the 50 confidence intervals contain the population mean?
(b) Is this number that you calculate the same as you would expect? Why or why not?
(c) Answer the question in (a) for the 95% confidence interval
Is there evidence that the growth hormone increases the milk production?
In study of a clinical for an allergy drug 115 of the 204 subjects reported experiencing important relief from their symptoms.
A university has studied the relationship between the GPA (grade point average) of its graduates and StartSal, their starting salaries (in thousands of dollars). A sample of seven graduates was randomly selected.
The faculty members at Boise State University were surveyed on the question "How satisfied were you with the Summer 2002 Schedule?" Their responses were to be categorized as "very satisfied," "somewhat satisfied," "neither satisfied nor dissatisfi..
Assume that the profit from each sale is $750 for the situation in additional problem #1. What is the expected weekly profit for a salesperson?
car manufacturers are concerned about meeting new government regulations on fuel efficiency. audi knows that their
The heights of 10 sixth graders are listed in inches: {53, 61, 54, 60, 58, 62, 55, 58, 59, 56}. Find the mean, median, mode, sample variance, and range.
a casino gambler assums the dice he uses are fair. an investigator recorded the outcomes of 600 rolls of such a
Expand the above table to show the change in Ms A's investment portfolio over the year, and construct a suitable diagram to illustrate that information.
At a .01 level of significance, test whether there is a difference between the 2 sample means. Construct a 99 percent confidence interval estimate of the difference between the two sample means.
a web based software company is interested in estimating the proportion of individuals who use the firefox browser. in
State a hypothesis related to this study that would cause you to conduct a one-tailed test. State a hypothesis related to this study that would cause you to conduct a two-tailed test.
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