91Ó°ÊÓ

Given in the question that , In Exercise 10.83, you conducted a nonpooled $t$-test to decide whether the mean number of acute postoperative days spent in the hospital is smaller with the dynamic system than with the static system. Use the technology of your choice to perform the following tasks.

we need to repeat that hypothesis test using a pooled $t$-test.

The output is,

The test statistic has a value of $2.45$.

$0.012$is the P-value.

The hypothesis is rejected for the $5\%$level using the P-value technique, because $P≤\mathrm{Î\pm },,(0.012≤0.05)$.

Given in the question that, In Exercise 10.83, you conducted a nonpooled $t-$test to decide whether the mean number of acute postoperative days spent in the hospital is smaller with the dynamic system than with the static system. Use the technology of your choice to perform the following tasks.

we need to compare results from the pooled and nonpooled $t$-tests.

A pooled $t$-test is used to reject the null hypothesis rather than a non pooled $t$-test.

Given in the question that,

In Exercise 10.83, you conducted a nonpooled$t$-test to decide whether the mean number of acute postoperative days spent in the hospital is smaller with the dynamic system than with the static system. Use the technology of your choice to perform the following tasks.

we need to find the more appropriate test.

Because the standard deviations of two variables are not comparable, the non-pooled $t$-test is suitable. Furthermore, the sample sizes are variable.