Statistic 211 Question An experiment was carried out to compare the handling abi

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Statistic 211 Question An experiment was carried out to compare the handling ability for two cars having different lengths, wheelbases, and turning radii. The observations are time in seconds required for the 10 subjects to parallel park each car. A 90% confidence interval for the mean difference in time required to park the two types of car was found to be (-0.27,11.23). Use this information to test H0 : µd = 0 versus Ha : µd 6= 0.

(a) Reject H0 at both level = 0.05 and = 0.10.

(b) Reject H0 at level = 0.10.

(c) Do not reject H0 at level = 0.20.

(d) Do not reject H0 at level = 0.10.

Explanation / Answer

Option D is Correct. Do not reject H0 at level = 0.10, because we have given 90% interval means = 0.10 and it contain the zero value , so Do not reject H0

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