Question

1. when testing the hypothesis that the variances of two independent normal distributions are equal, which test statistic is used? z test statistic f test statistic pooled t test statistic chi - square test statistic 4. type 1 error occurs when? we reject h0 if it is true we reject h0 if it is false we accept h0 if it is true we accept h0 if it is false 5. which of the following statistics are examples of point estimators used to estimate unknown population parameters? the sample mean and the sample median the sample mean, the sample variance, and the sample standard deviation the population mean and the population standard deviation the sample size and the number of degrees of freedom

Explanation:

1. The F - test statistic is used to test the hypothesis that the variances of two independent normal distributions are equal.
2. A Type 1 error occurs when we reject the null hypothesis (H0) when it is actually true.
3. Point - estimators are single - value estimates of population parameters. The sample mean, sample variance, and sample standard deviation are used to estimate the population mean, population variance, and population standard deviation respectively.

Answer:

1. B. F test statistic
2. A. We reject H0 if it is True
3. B. The sample mean, the sample variance, and the sample standard deviation