A researcher conducted a study with 12 patients and found the sample mean of the kidney stone passing to be 6.4 days with a sample standard deviation of 3.4. They want to test if this is greater than the regional average of 9 days at a significance level of a=0.25. What is the p-value for this test? Round to four decimal places.
Added by Norma S.
Step 1
Step 1: State the null and alternative hypotheses - Null hypothesis (H0): The mean kidney stone passing time is equal to or less than the regional average of 9 days (μ ≤ 9) - Alternative hypothesis (Ha): The mean kidney stone passing time is greater than the Show more…
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