Consider the following random sample of diameter measurements (in inches) of 12 softballs: 4.76, 4.76, 4.82,...
Consider the following random sample of diameter measurements (in inches) of 12 softballs:
|
4.76, 4.76, 4.82, 4.86, 4.73, 4.7, 4.73, 4.81, 4.76, 4.79, 4.72, 4.85 |
If we assume that the diameter measurements are normally distributed, find a 90% confidence interval for the mean diameter of a softball. Then complete the table below.
Carry your intermediate computations to at least three decimal places. Round your answers to two decimal place.
| What is the lower limit of the confidence interval? | |
| What is the upper limit of the confidence interval? |
Homework Answers
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Consider the following random sample of diameter measurements
(in inches) of 12 softballs:
4.76, 4.76, 4.82,...
Consider the following random sample of diameter measurements (in inches) of 19 softballs: 4.83, 4.77, 4.85,...
Consider the following random sample of diameter measurements (in inches) of 19 softballs: 4.83, 4.77, 4.85, 4.88, 4.81, 4.7, 4.81, 4.9, 4.75, 4.73, 4.71, 4.76, 4.84, 4.83, 4.69, 4.68, 4.68, 4.7, 4.81 Send data to Excel If we assume that the diameter measurements are normally distributed, find a 90% confidence interval for the mean diameter of a softball. Then complete the table below. Carry your intermediate computations to at least three decimal places. Round your answers to two decimal places....
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