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To test the null hypothesis that the mean waist size for males under 40 years equals 34 inches versus the hypothesis that the mean differs from 34, the following data were collected: 33, 33, 30, 34, 40, 35, 35, 32, 32, 34, 36, 30
1) calculate that sample mean and sample standard deviation?
2) calculate the T-value of the test statistic ?
3) find the p-value?
4) Test the stated hypothesis at a=.05 and write conclusion
What is the probability that a cereal would be high calorie, given that it is high fiber? In other words, what is P (high calorie, given high fiber)?
What sample size would be needed to estimate the true proportion of students at your college
Assume that flight times from SAN to ATL are exponentially distributed with a mean of 4.5 hours and a standard deviation of 0.2 hours. Assume that you must fly from SAN to ATL weekly for the lucrative consulting engagement for one year (52 flight..
Using this information, calculate Blpha risk (probability of Type II error) if the true population mean really is 81.
Explain the purpose of the chi-square test for independence. Provide some practical examples where this test might be used in business.
What would be the critical value under the null hypothesis if the size of your test were 5%?
A large retail corporation plans to sample sales receipts of its meat department to estimate the average size (in dollars) of a customer purchase. Previous analysis suggest that the standard deviation of the purchase amount is approximately $50.72..
We can use two products at my work, which are mutual funds and see if there is a correlation between the two. The two different funds are: a domestic stock mutual fund, which only invests in large organizations (large cap companies) based here in..
Use drinking as an excuse for outrageous behavior. including public nudity and dancing on tables. Find the standard error of this estimate. and interpret.
The 99% confidence interval estimating the proportion of all students at the university who prefer outdoor exercise is given by which of the following?
Beta and required rate of return stock has required return of 11%; risk-free rate is 7%t; and market risk premium is 4 %. Determine the stock's beta?
Suppose each employee in the company receives a $3000 raise for next year (each employee's salary is increased by $3000). The interquartile range of the salaries will
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