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Question

The average length of stay (LOS) from U.S. short-stay hospitals for a sample of 25 male pneumonia patients was $5.5$ days with a standard deviation of $1.2$ days. For a sample of 25 females, the average LOS was $5.9$ days with a standard deviation of $2.2$ days. (a) Assuming equal variances, is there a significant difference at $\alpha=.10$ ? (b) Calculate the $p$-value using Excel.

Solution

VerifiedAnswered 1 year ago

Answered 1 year ago

Step 1

1 of 8$a)$

In this problem, we consider the two-tailed test. So, the null and alternate hypotheses can be represented as

$\mu_1=\mu_2\quad\text{and}\quad H_1:\mu_1\neq\mu_2.$

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