Hypothesis Testing Using Normal Distribution
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Use the given claim to state a null and an alternative hypothesis. Identify which hypothesis represents the claim.
A. Claim: p < 0.205
B. Claim: p > 0.70
Test the claim about the population mean µ with a z-test using the given sample statistics and level of significance.
A. Claim: µ ? 0: a = 0.05. Statistics x = -0.69, s = 2.62, n = 60
B. Claim: µ = 7450: a = 0.05. Statistics x = 7512, s = 243, n = 57
Find the critical value(s) for the t-test with the indicated sample size n and level of significance.
A. Right-tailed test, n = 8, a = 0.01
B. Two-tailed test, n = 12, a = 0.05
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Hypothesis Testing Using Normal Distribution
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Z Test hypothesis tests are also explain in charts in Excel attachment .
Use the given claim to state a null and an alternative hypothesis. Identify which hypothesis represents the claim.
Answers
A. Claim: p < 0.205
Alternative hypothesis
B. Claim: p > 0.70
Null hypothesis
Test the claim about the population mean µ with a z-test using the given sample statistics and level of significance a.
Answers
A. Claim: µ ≠ 0: a = 0.05. Statistics x = -0.69, s = 2.62, n = 60
The null hypothesis tested is
H0: µ = 0
The alternative hypothesis is
H1: µ ≠ 0
The test statistic used is . Given that = -0.69, n = 60, σ = 2.62
Therefore, = -2.04
Rejection Criteria: Reject the null hypothesis, if the absolute value of test statistic is greater than the critical value of Z at the 0.05 significance level.
Critical value ...
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