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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?
About 10% of all adults deliberately do a one-time fling and feel no guilt about it. In a group of 7 adult friends, what is the probability that: No one has done a one-time fling.
Suppose 18 customers are selected at random. What is the probability that between two and six people inclusive want hot peppers?
A coin-operated coffee vending machine dispenses, on the average, 6 oz of coffee per cup. Can this statement be true of a vending machine that occasionally dispenses only enough to fill the cup half full (say, 4 oz)?
A researcher plans to compare two treatment conditions by measuring one sample in treatment 1 and a second sample in treatment 2. The researcher will then compare the scores for the two treatments. If there is a difference between the two groups o..
Records also point to that interviewing committee of bank officers approves 85% of individuals they interview. Determine probability that Ann's loan request is approved.
What is the maximum error of estimate for p ?
System data for a job shop revealed that the average time spent by a job in the shop was approximately n = 5 working days. Construct a statistical test using a level of significance of alpha = 0.05
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Use the least squares method to find the regression coefficients b0 and b1. State the simple linear regression equation.
Find the 95% confidence interval of the mean score for all golfers if this is a sample of 80 golfers instead of a sample of 50.
What is the percentile rank for someone who got 350 points and what percentage of students had between 275 and 375 points?
The caffeine content of 20 brands of regular coffee is shown below. 80 82 89 85 87 30 33 44 40 46 50 55 60 62 71 90 92 75 63 65. Thus, this job helps to construct a Frequency Distribution with a class interval of 10, starting with 30.
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