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A doctor studies the side effects of a drug on male and female. Following data was obtained for a random sample of 300 people. Construct the contingency table. Does these data suggest the side effects of the drug and gender are related? Use a=0.05. Identify the parameters, null hypothesis, alternative hypothesis, test statistics, rejection region and conclusion.
None
Mild
Moderate
Severe
Total
Male
22
31
48
30
131
Female
35
43
63
28
169
57
74
111
58
300
Assume a factory manager wishes to buy machines to perform a certain task in a production process. Certain key parts are produced by these machines.
A soft drink machine outputs a mean of 24 ounces per cup. the machines output is normally distributed with a standard deviation of 2 ounces. what is the probability of filling a cup between 21 and 26 ounces.
A sample of n= 16 scores has a mean of M = 45 and SS = 960. Calculate the sample standard deviation (s) and the estimated standard error for the sample means (SM).
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a botanist wishes to test the null hypothesis that the average diameter of the flowers of a particular plant is 9.6cm.
at year-end 2013 wallace landscapings total assets were 2.17 million and its accounts payable were 560000. sales
Using the information above, what total size sample would be necessary if we wanted to estimate the true proportion to within? 0.08 using 95% confidence?
Nicotine in cigarettes. To determine whether the mean nicotine content of a brand of cigarettes is greater than the advertised value of 1.4 milligrams, a health advocacy group tests
the speed of a runner increased steadily during the first three seconds of a race. her speed at half-second intervals
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