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    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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    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 ...

    Solution Summary

    Hypothesis Testing Using Normal Distribution

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