## Related questions with answers

Question

A psychologist compares the mean amount of time of rapid-eye movement (REM) sleep for subjects under three conditions. She randomly assigns 12 subjects to the three groups, four per group. The sample means for the three groups were 18, 15, and 12. The table shows the ANOVA table from SPSS.

REM sleep

Source | DF | SS | MS | F | P |
---|---|---|---|---|---|

Group | 2 | 72.00 | 36.00 | 0.79 | 0.481 |

Error | 9 | 408.00 | 45.33 | ||

Total | 11 | 480.00 |

Would the n1argin of error for each separate 95% confidence interval be less than 13.3, equal to 13.3, or larger than 13.3? Explain why.

Solution

VerifiedAnswered 1 year ago

Answered 1 year ago

Step 1

1 of 4Given:

$\begin{aligned} c&=\text{Confidence level}=95\%=0.95 \\ ME&=\text{Margin of error}=13.3 \end{aligned}$

We need to determine how the margin of error for the separate 95% confidence interval relate to 13.3.

The separate 95% confidence interval will have an overall confidence level less than 95%.

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