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The mean of a normal probability distribution is 60; the standard deviation is 5.
a. About what percent of the observations lie between 55 and 65?
b. About what percent of the observations lie between 50 and 70?
c. About what percent of the observations lie between 45 and 75?
Would it be reasonable to conclude that the 5 percent of the employees are not able to pass the random drug test?
What is the null and alternative hypothesis? What is your final conclusion?
A study sponsored by American Express Co. and the French government tourist office found that old American stereotypes about French unfriendliness weren't true.
In each of the following situations, the sampling frame does not match the population, resulting in undercoverage. Give examples of population members that might have been omitted:
A psychologist claims that more than 6.3% of the populations suffer from professional due to greate shyness. Categorize the Type II error in this context.
1st a confidence interval is constructed without utilizing the finite population correction factor.
Examined the effect of body position on blood pressure
Use frequency distribution to create a probability distribution, determine the (b) mean,(c) variance.
What is the P-value of the test, assume the standard deviation is 3 years, a 95% confidence interval for the average time
In order not to violate the requirements necessary to use the chi-square distribution, each expected frequency in a goodness of fit test must be:
Calculated test statistic, decision about the null hypothesis interpretation of results, and a list of references consulted.
Thirty-two samples of 8 items each were collected from a process. The average sample mean is 12 and the average range is 0.10.
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