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You are picking a bouquet of 20 flowers for your mother at random from a garden with 25 coneflowers, 35 daisies and 42 lilies. Your mother likes daisies the best and you want to have 15 of those in your bouquet.
a) Define D in terms of the story. Name its distribution and parameters.
b) What is the probability that you pick exactly 15 daisies in your bouquet?
c) What is the probability that all of the flowers in your bouquet are daisies?
d) What is the expected value and variance of D?
e) What is the expected number of coneflowers in your bouquet?
f) What is the expected number of lilies in your bouquet?
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Using a present value table, your calculator, or a computer program present value function, answer the following questions. Assistance is needed with the formula to calculate the problems:
Find the 90% confidence interval for the variance and standard deviation for the time it takes a state police inspector to check a truck for safety if a sample of 27 trucks has a standard deviation of 6.8 minutes.
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She samples a group of 100 new fathers and finds that their mean is 64.5. What is the variance on this questionnaire in the general population?
Researchers at Pharm-X, a pharmaceutical company, are testing and comparing the effects of Drug A and Drug B on participants' allergies. The researchers are using a double-blind procedure to conduct their test.
Aggregate the opinions of the experts by computing the minimum, maximum, 25 th percentile, 50 th percentile, and 75 th percentile values.
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