Explore BrainMass

Explore BrainMass

    Hypothesis, ANOVA, Chi square

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    1) Experiment was conducted at the .01 level of significance. The one-tailed test with the rejection area in the upper tail of the z-curve was used. Computed z-score was 1.79. What does it mean?
    A. We should reject H0 and accept H1.
    B. We should not reject H0.
    C. We should have used the .05 level of significance.
    D. We should increase the sample size.

    2) A new model of digital camera is marketed in three major department store chains. The number of cameras sold every month at each of three store chains is listed below.
    Target K Mart Wal Mart
    177 164 180
    200 144 213
    191 170 198
    188 151 204
    At 0.05 level of significance, is there a difference in the mean numbers of cameras sold at the three department store chains?
    A. State the null and the alternative hypothesis.
    B. Compute SS total, SST, and SSE.
    C. Develop an ANOVA table
    D. What is the decision regarding the null hypothesis (is there a difference in the mean numbers of cameras sold at the three department store chains)?

    3) The owner of a car dealership wants to determine whether there is a relation between the income level and the type of vehicle purchased in their dealership. He randomly sampled 500 car buyers and obtained the following data:
    Income Level SUV/Minivan Midsize Compact
    up to $30K/yr 13 71 106
    $30K-$60K 33 76 45
    more than $60K/yr 66 59 31

    At the .05 level of significance, determine whether there is a relation between the income level and the type of vehicle purchased. Show your work step by step.

    © BrainMass Inc. brainmass.com March 4, 2021, 6:59 pm ad1c9bdddf
    https://brainmass.com/statistics/analysis-of-variance/hypothesis-anova-chi-square-75366

    Solution Summary

    3 questions on test of hypothesis, ANOVA, chi squared test have been answered.

    $2.49

    ADVERTISEMENT