QUESTION 1 1.5 points Use the stat, Basic Statistics, t menu to calculate confid

Question

QUESTION 1 1.5 points Use the stat, Basic Statistics, t menu to calculate confidence intervals for questions B5 from Exercise set 6 (90% confidence level, bounded interval around mean 8 Sample 79,83, 84. 96, 77, 8.1, 68, 75.86, 8. 78,74 84.89, 85, 9469, 77 Enter the left border (rounded to three decimal places) Enter the right border (roundod to three decimal places) QUESTION 2 1.5 points Perform a hypothesis test for questions from Exercise set 6 95% confidence level) Assume normality. Hint use ttest (why? sample 79,83 84 96.7 7.8 1, 68 75.86, 8. 78, 7484 89,85 94 69.77 i Formulate the hypothesis bv entering the corresponding signs or and numbers 2pvalue (rounded to three decima places 3 conclusions, based on the results, should you accept or reject Ho

Explanation / Answer

1. Here mean=8.10556 and sd=0.7534

Using t table value for Df =n-1=17 for 90% CI is 1.740

Hence margin of error=E=t*sd/sqrt(n)=0.309

Hence CI=mean+/-E=8.106+/-0.309

Lower border=7.797

Upper border=8.415

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