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The P-value for a two-sided test of the null hypothesis H0:μ=10is 0.06

(a) Does the95%confidence interval forMinclude 10? Why or why not?

(b) Does the 90%confidence interval forMinclude 10? Why or why not

Short Answer

Expert verified

(a) 95%confidence interval for μwill includes 10

(b)90%confidence interval for μdoes not includes 10

Step by step solution

01

Part (a) Step 1: Given information

Given in the question that, The P-value for a two-sided test of the null hypothesis H0:μ=10is 0.06.

we need to find that Whether the95%confidence interval for μinclude 10.

02

Part (a) Step 2: Explanation

H0:μ=10

P-value =0.06

Reject, H0, if level of significance(α)<P-value .

The null and alternative hypotheses could be written as:

H0:μ=10

Ha:μ≠10

The level of significance is0.05

Here,

p-value (0.06)>α(0.05)

Thus, the null hypothesis is not rejected. So, it could be concluded that 95%confidence interval for μwill includes 10

03

Part (b) Step 1: Given information

Given in the question that, The P-value for a two-sided test of the null hypothesis H0:μ=10is 0.06.

We need to find that Whether the90%confidence interval for μinclude10.

04

Part (b) Step 2: Explanation

Here,

H0:μ=10

P-value=0.06

Reject, H0, if level of significance (α)<P-value

The null and alternative hypotheses could be written as:

H0:μ=10

Ha:μ≠10

The level of significance is 0.10.

Here, p-value (0.06)<α(0.10)

Thus, the null hypothesis is rejected. So, it could not be concluded that 90%confidence interval for μ will include10.

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