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Total cholesterol in children age 10 to 15 is assumed to follow anormal distribution with a mean of 191 and standard deviation of 22.4 what proportion of children 10 to 15 years of age have total cholesterol between 180 and 190? B. what proportion of children 10 to 15 years of age would be classified as hyperlipidemic(assume that hyperlipidemia is defined as a total cholesterol level over 200).
Calculate a 95% confidence interval for the mean endowment of all the private colleges in the United States assuming a normal distribution for the endowments.
The Rathburn Manufacturing Company makes electric wiring, which it sells to contractors in the construction industry. Approximately 900 electric contractors purchase wire from Rathburn annually.
If the population mean is estimated within two days, how many salespeople should be sampled?
Assume the population standard deviation (s) is 0.5 and the sample size (n) is 100. Calculate the values for alpha, a type I error and beta, a type II error. (To calculate Beta, consider a mean that is 1 standard error away from the lower end valu..
Determine the percentage increase in his real (inflation-adjusted) salary over the last three years. Which of the 4 methods of data collection was involved when he used the Consumer Price Index?
What is the point estimate of the proportion of the population of employees who strongly dislike their current work experience (to 2 decimals)?
Explain these results to a person who understands the t test for a single sample but knows nothing about the t test for independent means.
Estimate the total number of cases sold along with the standard error of your estimate. Estimate the average number sold per supermarket, along with the standard error of your estimate.
Identify the sampling distribution to be used: the standard normal distribution or the Student's t distribution. Find the critical value(s).
If the observed value is 4, the expected value is 5, and the standard error is 4, then the test value used for the z test is equal to
Please give all values of b in the following equations that will give one or more real number solutions?
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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