math forum, statistics homework help
math forum, statistics homework help
Tell me the P-value of 2.647 and end with the same result below in steps please?
- You wish to test the claim that μ ≤ 24 at a level of significance of α = 0.01 and are given sample statistics n = 40, = 25.8. Assume the population standard deviation is 4.3. Compute the value of the standardized test statistic. Round your answer to two decimal places.
The null hypothesis H0 μ = 24
the alternative hypothesis is μ>24
the sample standard deviation = population std/sqrt(n) = 4.3/sqrt(40) = 0.6799
The standardized test statistic
Z = (25.8-24.0)0.6799 = 2.647
at α = 0.01 the critical value of the one side test is 2.32
since 2.647>2,32, so we reject the null hypothesis, and accept alternative hypothesis μ>24.
Tell me the P-value of 2.647 and end with the same result above?
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