Using the Excel output in Figure 1, what would you conclude testing whether the

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Question

Using the Excel output in Figure 1, what would you conclude testing whether the average number of hours students watch TV per week is different from 8 hrs at the 0.05 significance level? Using the Excel output in Figure 1 above, what would you conclude to the hypothesis test described in Question 2 at the 0.10 significance level? Using the Excel output in Figure 1, what is the lower limit to the 95% confidence interval?

mean: 6.805

Standard Error: 0.770478582

Median: 5.875

Mode: 10

Standard deviation: 5.448106299

Standard variance: 29.68186224

Kurtosis: 3.942649387

Skewness: 1.623227296

Range: 28

Minimum: 0

Maximum: 28

Sum: 340.25

Count: 50

Confidence level (95.0%): 1.548334649

Explanation / Answer

Hypothesis:
H0 : mu= 8
Ha ; mu not equal to 8

Test statistics:
z = ( x -mean)/SE
= ( 6.805 - 8) /0.7705
= -1.5509
P value = 0.1211

we fail to reject the null hypothesis at 0.05 and 0.1 significance level

z value at 95% = 1.96

CI = mean - z * SE
= 6.805 - 1.96 * 0.7705
= 5.2948

Lower limit = 5.2948

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Using the Excel output in Figure 1, what would you conclude testing whether the

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