Observational studies and experimental
Illustrate the major difference between observational studies and experimental.
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A golf ball manufacturer wants to compare the distance traveled by golf balls using four (4) unique designs. Fifteen balls were manufactured and each was brought to local golf course for testing by the local pro. The order of golf balls hit by the
For each part below, write down H0 and H1. Point out if it is a lower tail one-sided test, an upper tail one-sided test, or a two sided test. Also, say if it is mean or proportion.
Assume that two fair dice are rolled and that the two numbers recorded are multiplied to obtain a final score. Construct and plot the probability mass function and the cumulative distribution function of the final score.
A medication for treating the disease is effective upon any given day with probability P. If the medication is taken for 10 days, and effectiveness is independent from day to day, calculate:
Determine the range, sum of squares, variance, and standard deviation for these data: 3,4,2,4,5,3,4,4,6,1.
You're lost in the national park of Bandrika. Tourists comprise 2/3 of the visitors to park and provide the correct answer to requests for directions with probability 3/4. If you ask a native badrikan for directions the answer is always false.
One can compute the 95% confidence interval for the mean with the population standard deviation known. This will give us an upper and a lower confidence limit. What happens if we decide to calculate the 99% confidence interval?
Find the values of A and B and sketch the cumulative distribution function. (b) What is the probability that a repair job takes longer than two hours? (c) Construct and sketch the probability density function.
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