A sample of 16 students showed that the variance in the number of hours they spend studying is 25. At the 5% level of significance, test to see if the variance of the population is significantly different from 30. Use the critical value approach.
What will be an ideal response?
?
| H0: ?2 = 30 |
| Ha: ?2? 30 |
| chi-square = 12.5; critical values: 6.262 and 27.488; do not reject H0 |
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