Scores for females on the critical
The scores for females on the critical reading portion of the SAT are normally distributed, with a mean of 493 and a standard deviation of 112. Random samples of size 36 are drawn from this population, and the mean of each sample is determined.
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Determine the number of days, for which the probability of an outage is 0.85.
Choose all the subjects to be close together in initial cholesterol level, engage in the same level of exercise, have approximately the same BMI (body mass index - a standardized measure of weight) and to belong to the same socio-economic group an
Data collected during the last year shows that 10% of the bowling pins produced(on average) are out of specification. If 100 are tested, what is the probability that 12 or less will be rejected?
How many different numbers can be formed by rearranging the digits of 858,585,555?
calculate the 90% confidence interval for the population mean if: x-bar is 95, sigma= 0.8, and n= 16.
With a certain scratch-off lottery ticket a player can either win $100 or win nothing. The probability that a person wins $100 on a single ticket is 0.258. If Andy buys 10 tickets, what is the probability of winning $100 each on 2 of the 10 ticket
Calculate the 95% confidence interval for the proportion if: p=0.55 and n = 400
Twenty balls are numbered 1 through 20 and placed in a box. A ball is randomly selected and placed back into the box. Then a second ball is randomly selected. What is the probability that the first ball's number is evenly divisible by 4 and the se
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