Question

In the test of hypothesis H 0 : μ = 100 vs Ha: μ ≠ 100, a sample of size 250 yields the standardizedtest statistic z = 1.47. Find the p-value for the test and state your conclusion at α = 0.10

Answer 1

Answer:

The p-value of the test is 0.1416.

The null hypothesis was not rejected concluding that μ = 100.

Step-by-step explanation:

The hypothesis is defined as:

H₀: μ = 100 vs. Hₐ: μ ≠ 100

The test is a two-tailed test.

The test statistic value is z = 1.47.

The significance level of the test is α = 0.10.

The p-value is computed as follows:

$p-value=2\times P(Z<-1.47)=2\times0.0708=0.1416$

Decision rule:

If the p-value of the test is less than the significance level 0.10, then the null hypothesis is rejected and vice-versa.

The p-value = 0.1416 > α = 0.10.

The p-value is more than the significance level.

The null hypothesis was not rejected.

Conclusion:

The mean value is not different than 100.