Question 5

Determine the 98% confidence interval to estimate the population proportion of employees at a large corporation that are full-time. A random sample of 35 employees shows that 18 of them are full-time.State the lower bound___________________and upper bound___________________, each rounded to the nearest thousandths place.

Interpret your CI in context ___________________.

Question 6: Determine the t-score for a left-tail with alpha=10% and n=13. Round answer to the nearest thousandths place.

___________________.

Question 7

Determine the 99% confidence interval to predict the population mean, given the sample mean weight is 18.497 pounds and the margin of error is 5.372 pounds.

Enter the lower limit ___________________and upper limit___________________of the confidence interval rounded to the nearest thousandths place.

Question 8

Determine the sample size required to construct a 96% confidence interval that will predict the population proportion of Stat 1450 students that will receive a final grade of A within 5% of the population. A sample from last semester shows the proportion to be 47%.

___________________