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    Rejection Rate Hypothesis

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    It is suspected that the rejection rate for a plastic-cup-molding machine is dependent on the temperature at which the cups are molded. A series of short tests is conducted to examine this hypothesis with the following results:

    Temperature Total Production Number Rejected
    T1 150 12
    T2 75 8
    T3 120 10
    T4 200 13

    On the basis of these data, do you agree with the hypothesis?

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    Solution Summary

    This solution determines the rejection rate corresponding to each temperature using the Chi-Squared test with step-by-step calculations and explanations. It also decides to accept or reject the null hypothesis.