Weights, in pounds, of ten-year-old girls are collected from a neighborhood. A sample of 16 weights is given below. Assuming normality, use a TI-83, TI-83 plus, or TI-84 calculator to find the 98% confidence interval for the population mean weight μ. Round your answers to one decimal place and use increasing order.
|
Weight |
|
94.0 |
|
44.4 |
|
71.4 |
|
54.3 |
|
96.0 |
|
75.3 |
|
77.9 |
|
80.1 |
|
67.5 |
|
80.4 |
|
77.3 |
|
66.0 |
|
92.0 |
|
73.6 |
|
66.1 |
|
65.1 |
The statistical software output for this problem is:
One sample T confidence interval:
μ : Mean of variable
98% confidence interval results:
| Variable | Sample Mean | Std. Err. | DF | L. Limit | U. Limit |
|---|---|---|---|---|---|
| Data | 73.8375 | 3.435463 | 15 | 64.896775 | 82.778225 |
Hence,
98% confidence interval will be:
(64.9, 82.8)
Weights, in pounds, of ten-year-old girls are collected from a neighborhood. A sample of 16 weights...