14.The president of cross country runners in South Carolina wanted to estimate the true
proportion, at a 90% confidence, the proportion of all high school cross ountry runners in SC
that run under a five minute mile. A random sample of 80 runners was taken and it was found
that 60 (75% of the sample) can run under a five minute mile. Help the president
a. Construct a 90% confidence interval for this situation.
b. What would happen to the interval if I changed the confidence level to 80%? May help to
be specific
Answers: 1
Physics, 23.06.2019 18:30, trinitymarielouis
What is required to bring about a phase change 1.an increase or decrease in pressure 2.an increase or decrease in energy 3.an increase in energy only 3.a decrease in energy only
Answers: 1
14.The president of cross country runners in South Carolina wanted to estimate the true
proportion,...
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