ttest weight1 weight2 Paired t test Variable Obs Mean Std Err Std Dev 95 Conf Interval weight1 9 78 53333 4 378039 13 13412 68 43756 88 62911 weight2 9 73 81111 3 388083 10 16425 66 00929 81 63515 diff 9 4 711112 2 002668 6 008004 0929512 9 329273 Ho mean (weight 1 weight2) mean (diff) 0 Ha mean (diff) 0 Ha mean (diff) 0 Ha mean (diff) 0 t 2 3524 t 2 3524 t 2 3524 P It 0 0465 P t 0 0233 Questions (pick the correct answer for each) a t 2 3524 in the output is critical value or test statistic b Based on the proper Ha, the p value is C) 0 9767 B) 0 0465 C) 0 0233 c Calculate a 90 confidence interval for the mean for weight2

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Question: ttest weight1 = weight2 Paired t test Variable Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] weight1 9 78.53333 4.378039 13.13412 68.43756 88.62911

ttest weight1 = weight2 Paired t test Variable Obs Mean Std. Err. Std. Dev. [95% Conf. Interval] weight1 9 78.53333 4.378039 13.13412 68.43756 88.62911 weight2 9 73.81111 3.388083 10.16425 66.00929 81.63515 diff 9 4.711112 2.002668 6.008004 .0929512 9.329273 Ho: mean (weight 1 - weight2) = mean (diff) = 0 Ha: mean (diff) 0 t = 2.3524 t = 2.3524 t = 2.3524 P It 0.0465 = | P>t= 0.0233 Questions (pick the correct answer for each) a. t = 2.3524 in the output is critical value or test statistic? b. Based on the proper Ha, the p value is? C) 0.9767 B) 0.0465 C) 0.0233 c. Calculate a 90% confidence interval for the mean for weight2.

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