Hypotheses for right-tailed test

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Reference no: EM13111365

From her firm's computer telephone log, an executive found that the mean length of 64 telephone calls during July was 4.48 minutes with a standard deviation of 5.87 minutes. She vowed to make an effort to reduce the length of calls. The August phone log showed 48 telephone calls whose mean was 2.396 minutes with a standard deviation of 2.018 minutes.

(a) State the hypotheses for a right-tailed test.

(b) Obtain a test statistic and p-value assuming unequal variances.

Reference no: EM13111365

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