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In a large lecture class, the professor announced that the range of scores on a recent exam was normally distributed between 51 and 87. Using the Empirical Rule to estimate s, how many students would you need to sample to estimate the true mean score for the class with 90 percent confidence and an error of ± 2?
A. About 17 students
B. About 35 students
C. About 188 students
D. About 25 students
Population standard deviation of 4 inches. For any one person selected at random, find out the probability that their height will be?
Simplification by Factorization and finding domain-What happens when x is 6 or 3. What is the domain if x can only be 6 or 3?
One more box is tested, and if that passes, all bulbs made that day will pass. Find probability that first box fails and second box passes.
Find the probability that a random selection of 9 songs will have mean length of 186.30 seconds or less. Assume distribution of the lengths of the songs is normal.
Which combination of factors has greatest likelihood of rejecting null hypothesis?
Assume the risk-free interest is 5%. If WT borrows $100 million today at this rate and uses the proceeds to pay an immediate cash dividend, what will be the market value of its equity just after the dividend is paid, according to MM?
refer to the buena school district bus data.develop a 95 percent confidence interval for the mean bus
an important measure of the performance of a locomotive is its adhesion which is the locomotives pulling force as a
questionnew horizons airlines wants to forecast the mean number of unoccupied seats per flight to germany next
Find ten consecutive composite numbers. Find the prime factors of 1147 and of 1716. Are there any common factors?
q1. a study is conducted to determine if time of day has any effect on test grades. an introductory psychology class is
When we have several criteria with different scale, for ranking can we add values after standardization? for exaample for ranking websites we have number of visitors and page load time and size and.
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