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Math Help - statistics test

  1. #1
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    statistics test

    We want to test H0: = 0 vs Ha: ≠ 0. We have a sample of 200 observations and the z-test statistic based on the sample is positive. What value should we compare the test statistic with in order to draw a conclusion at the 10% level?

    a) 0.05
    b) 0.1
    c) 1.282
    d) 1.645

    I got c as my answer using the inverse normal probability table but the answers say that it is d. Can someone please explain why it is d?
    I thought it would be d at the 5% level, not 10%
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  2. #2
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    Quote Originally Posted by brumby_3 View Post
    We want to test H0: = 0 vs Ha: ≠ 0. We have a sample of 200 observations and the z-test statistic based on the sample is positive. What value should we compare the test statistic with in order to draw a conclusion at the 10% level?

    a) 0.05
    b) 0.1
    c) 1.282
    d) 1.645

    I got c as my answer using the inverse normal probability table but the answers say that it is d. Can someone please explain why it is d? I thought it would be d at the 5% level, not 10%
    It's a two-sided test at the 0.1 significance level.
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