19.00 | hypothesized value |
22.00 | mean 1 |
3.00 | std. dev. |
1.22 | std. error |
6 | n |
5 | df |
2.449 | t |
.0290 | p-value (one-tailed, upper) |
The probability is 0.0290.
21.66 | confidence interval 95.% lower |
22.34 | confidence interval 95.% upper |
0.34 | margin of error |
The 95% confident Interval to estimate the 300 students’ average age is between 21.66 and 22.34.
If there are 300 students in Binnon on Sept 1 with mean age of 22 and...
A college admissions director wishes to estimate the mean age of all students currently enrolled. In a random sample of 16 students, the mean age is found to be 21.8 years. From past studies, the ages of enrolled students are normally distributed with a standard deviation of 10.1 years. Construct a 90% confidence interval for the mean age of all students currently enrolled. 1. The critical value: 2. The standard deviation of the sample mean: 3. The margin of error:...
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