You just recently read somewhere that the mean elevation

Reference no: EM13634916

Given the following information: the sampled population is normally distributed, n = 81, sample mean = 38.7, and the population standard deviation = 8.A. Construct a 95% confidence interval for the population mean and write a confidence statement.B. How large a sample should be taken if the population mean is to be estimated with 90% confidence to within 8 units?

You just recently read somewhere that the mean elevation drop for ski trails at eastern ski centers is at least 450 feet. You believe that the elevation is lower than 450 feet. Write the null and alternative hypotheses that would be used to test this staement.

Reference no: EM13634916

Questions Cloud

If the mean per capita income in the us is 39000 and the : if the mean per capita income in the u.s. is 39000 and the standard deviation is 5000. what percent of the

What is the probability of getting the ball into the basket : what is the probability of getting the ball into the basket if my standard deviation is 1.35 feet and my mean is 0? the

In a study the data you collect is status of disease : in a study the data you collect is status of disease infection.in a study the data you collect is favorite type of

A consumer magazine wants to compare the lifetimes of : a consumer magazine wants to compare the lifetimes of ballpoint pens of three different types. the magazine takes a

You just recently read somewhere that the mean elevation : given the following information the sampled population is normally distributed n 81 sample mean 38.7 and the

A skeptical paranormal researcher claims that the : a skeptical paranormal researcher claims that the porportion of americans that have seen a ufo p is less than 4 in

75 numbers are rounded off to the nearest integer and then : 75 numbers are rounded off to the nearest integer and then summed. if the individual round-off error are uniformly

If the test statistic for a difference of means test has a : if the test statistic for a difference of means test has a p-value of .03 we could reject the null hypothesis at an

Suppose that from the past experience a professor knows : suppose that from the past experience a professor knows that the test score of a student taking his final examination

User Account

All Pages