A company supplying candy to school vending machines needs to know about candy preferences of middle school and high school age students. A

Question

A company supplying candy to school vending machines needs to know about candy preferences of middle school and high school age students. A random sample of 400 students was taken. The company wants to know if there is any relationship between the candy choices and the age of students. After performing a chi-square test of independence, the chi-square test statistic = 24.68. The appropriate critical value for df and desired alpha level = 11.34.
Is there sufficient evidence to reject the null hypothesis? Explain.

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Thành Đạt 1 week 2021-07-21T13:23:16+00:00 1 Answers 2 views 0

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    2021-07-21T13:24:24+00:00

    Answer:

    Yes

    Step-by-step explanation:

    The chi-square test statistic = 24.68.

    The critical value for df = 11.34.

    Since the calculated value of the chi square  falls in the critical region it is concluded that the two variables are dependent.

    1) The null and alternative hypotheses are

    H0: candy preferences of  students is independent of age.

    Ha: candy preferences of  students is  not independent of age.

    As the calculated value χ² = 24.68 lies in the critical region  χ² ≥χ² =11.34, null hypothesis is rejected.

    Therefore, we conclude that there is not enough evidence to accept the null hypothesis .

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