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A sociologist found that in a sample of 50 retired men, the average number of jobs they had during their lifetimes was 7.2. The population standard deviation is 2.1.
Find the best point estimate of the mean.
Find the 95% confidence interval of the mean number of jobs.
Find the 99% confidence interval of the mean number of jobs.
Which is smaller? Explain why.
Construct and interpret 90 percent on confidence interval for the mean. Be sure to interpret the meaning of this interval.
athe manager hires you to analyze the data she collects and the results for the above questions are as
Assuming that Mendel's proportion of 3/4 is correct, find the probability of getting 787 or fewer plants with long stems among 1064 offspring plants. compare answers with binomial and normal approximation.
question the annual commissions earned by sales representatives of machine products inc. a manufacturer of light
Suppose that 30% of all adults in Ohio support the increase. The probability that at least 800 people support the increase is?
A recent study at a local college claimed that the proportion of students who commute more than fifteen miles to school is no more than 25%.
Standard error for regression equation - determination and non determination and explain the meaning of each.
Find out the probability that: (a) The amount requested is between $65,000 or more?
drcatscan is an ophthalmologist who in addition to prescribing glasses and contact lenses performs laser surgery to
Target population: Heart Disease Patients in the United States and research variable:Heart Disease Smokers -
Make a worksheet in Excel for your calculations. (b) Make a histogram of the data. Would you be justified in using a parametric t test that assumes normality?
Certain stocks are recommended each month by a monthly magazine. If 40% of the stocks recommended advance at least 20%, what is the probability that of the five stocks most recently recommended
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