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Suppose that the annual rate of return for a common biotechnology stock is normally distributed with a mean of 5.5% and a standard deviation of 6% . Find the probability that the one-year return of this stock will be positive.
Can we conclude that the mean time for a game is less than 3.50 hours? Use the .05 significance level.
In terms of measures of association, how is Lambda different from the other measures used for nominal level data?
Organize data into a frequency distribution. How many classes would you propose? What value would you propose for class interval?
No, there is not sufficient information to reject the hypothesis that the proportion of cats and the proportion of dogs that sleep more than 10 hours per day are the same because the test value -0.65 is inside the acceptance region (-1.96,1.96).
A box contains 9 tickets numbered 1 to 9 inclusive. If 3 tickets are drawn from a box one at a time, find the probability that they are alternative after (1) odd, even, odd or (2) even, odd, even.
Does this sample give sufficient evidence to conclude that self-esteem scores for group-participation adolescents are significantly different from those of general population? Use two-tailed test with α = .01.
Describe the difference between sample and a sampling distribution. Your reply must be in complete sentences and you may use sketches to help you.
Use value you found in part a to find out degree of confidence for interval 65.65
Compute the score based on their appropriate class means and standard deviations:
Describe the optimal solution to a linear programming problem. comprise the following constraints from a two -variable linear program.
Find out the following probabilities. Probability that exactly 27 items will be good.
If desired confidence level is 95 percent, suitable critical value is?
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