You are watching: Explain why the t-distribution has less spread as the number of degrees of freedom increases.
If we perform not reject the null hypothesis once the statement in the different hypothesis is true, we have made a Type _______ error.
TYPE IIA Type I error occurs if the null hypothesis is rejected when, in fact, the null hypothesis is true. A Type II error occurs if the null hypothesis is not rejected once, in fact, the different hypothesis is true.
If a hypothesis is tested at the = 0.05 level of meaning, what is the probability of making a kind I error?
falseAlthough sample data is supplied to test the null hypothesis, it cannot be proclaimed with 100% certainty that the null hypothesis is true. It can just be established whether the sample information supports or does not assistance the null hypothesis.
The tail of a test is based on the sign of the alternate hypothesis.For a left tailed test, the sign of the alternate hypothesis is much less than For a right-tailed test, the sign of the alternate hypothesis is better than For a two-tailed test, the authorize of the alternate hypothesis is not equal to
The _______ represents the intended propercent of intervals that will certainly contain the parameter if a huge number of various samples of size n is obtained. It is deprovided _____
at least at 80% of intended frequencies higher than or equates to 5;all meant frequencies better than or equals1
TheTh chi-square goodness-of-fit tests are constantly best tailed because the numerator in the test statistic is squared, making eextremely test statistic, other than a perfect fit, positive.
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If the intended count of a category is less than 1, what deserve to be done to the categories so that a goodness-of-fit test can still be performed?
The null hypothesis is rejected once the P-worth is tiny. When the P-worth is big, the null hypothesis is not rejected.
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