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In a random sample of 800 customers selected for a short phone interview, 96 have stated that they have received their shipments late. The company's claim is that the percentage of late shipments is at or below 10%. Conduct a hypothesis test at a 0.05 level of significance.
1) The calculated (observed) value of the test statistic is?
2) What is the p-value for the test?
3) Is there sufficient evidence that the percentage of late shipments is larger than 10%?
For the following scores, find the: A. Mean. B Median. C. Sum of squared deviation. D. Variance. E. Standard deviation.
What then is the probability that a shaft will be acceptable? Suppose that the diameter of the shaft is a random variable that is Normally distributed.
The number of degrees of freedom associated with the t test, when the data are gathered from a matched pairs experiment with 13 pairs, is:
What is the theoretical probability that Mr. Nerdly assigns 10 homework problems as a result of a randomly selected student playing the birthday game?
Which of the following exam scores should lead to the better grade?
Suppose that you select a 50 families sample. Which is the form expected from the distribution of the average or median of the sample?
If W denotes the total number of spaces one moves under these special conditions, find the mean and standard deviation of W.
Decide if the events A and B are mutually exclusive or not mutually exclusive. A card is drawn from standard deck of 52 playing cards.
The following table gives the median incomes of families by level of income and geographical region.
Compute the optimal production quantities for the company?
An occupational health study was carried out to evaluate the health status of workers. The response is forced expiratory volume (FEV), a measure of respiratory function
A health care professional wishes to estimate the birth weight of infants. How large a sample must she select if she desires to be 90% confident that the true mean is within 6 ounces of the sample mean?
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