The primary purpose of hypothesis testing is to attempt to reject the null hypothesis not to accept the alternative hypothesis.
True
False
In hypothesis testing, a Type 1 error is
failing to reject the null hypothesis when it is true. |
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failing to reject the null hypothesis when it is false. |
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rejecting the null hypothesis when it is true. |
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rejecting the null hypothesis when it is false. |
In general, the power of a statistical test is the probability that a test will
reject the alternative hypothesis when the alternative is false. |
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reject the null when the null hypothesis is false. |
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retain the alternative hypothesis when it is true. |
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retain the null hypothesis when it is false |
The critical value for a one-tailed t-test using an alpha level of .01 with 22 degrees of freedom is
2.508 |
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2.819 |
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2.518 |
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2.831 |
a) The primary purpose of hypothesis testing is to attempt to reject the null hypothesis not to accept the alternative hypothesis.
TRUE
thats is main purpose is our sample mean is significantly different from the null hypothesis mean.
b) In general, the power of a statistical test is the probability that a test will test will reject the null when the null hypothesis is false. The larger it is, the better.
c) The critical value for a one-tailed t-test using
an alpha level of .01 with 22 degrees of freedom is
2.818756
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