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An Air Force study indicates that the probability of a disaster such as the January 28, 1986 explosion of the space shuttle Challenger was 1 in 35. The Challenger flight was the 25th mission.
a. How many disasters would you expect in the first 25 flights?
b. Use the normal approximation to estimate the probability of at least one disaster in 25 missions.
Perform the appropriate test for a difference in mean blood glucose and report the p-value for the two-tailed test of significance, assuming that the variances are equal.
each person received was determined by randomization. For each person who was sent one of the surveys, the researcher recorded whether or not a completed survey was returned.
Discuss possible study designs. Which of the designs would we use to test our research hypothesis?
The correct set of hypotheses to test the effect of the bonus plan, the difference between the t and z distributions
Let X 1 , X 2 , X 3 , X 4 be a random sample from a Poisson distribution with parameter λ and let Y = X 1 + X 2 + X 3 + X 4 . You decide to test λ = 1.60 versus λ
State the null and alternative hypotheses you would use to test whether the year-end bonuses paid by Jones & Ryan were different from the population mean.
Calculate the mean, median and mode for both sets and do graph/histogram to chart the results and conclude if indeed one set of year had more the other as far a snowfall.
Use the t test to determine whether the slope of the regression model is significant at α = 0.05.
Solve linear program graphically
Find out the probability distribution of your net winnings if you play one time. Calculate the mean and the standard deviation.
Computing the probability values for the given discrete distribution - What is the probability that you did not shake hands with a person with the flu
Use this information to make a 95% confidence interval to evaluate true average number of copies made each day at this company.
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