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Collapse the response categories in the following table so that it meets the assumption of the chi-square test; then perform the test.
OWNERSHIP
Education Owners Non-owners
Less than grade 8 0 8
Some high school 5 9
High school graduate 30 25
Some college 10 11
College graduate 12 15
Master’s degree 3 6
Ph.D. degree 2 1
At a =.02 , is the number of sticks of gum a person chews per day actually greater than 8? Use the traditional method of hypothesis testing.
Find the sample size required. A pilot study showed that the population standard deviation is estimated to be 0.09 g
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If a garage is robbed, what is the probability the doors were left open?
Find the probability that the student 's test score is more than 39.8. Find the probability that the student's test score is between 33.5 and 41.9.
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