* not completed

. Which of the following is true about the trial of the Pyx?

It involves mainly descriptive statistics correct incorrect

It does not rely on any assumptions correct incorrect

It allowed for sampling error correct incorrect

The Pyx was eventually found guilty correct incorrect

* not completed

. Which of the following describes the rejection region in hypothesis testing?

It is the middle region in a sample distribution of means. If scores fall in this area, we can conclude that your sample mean is significantly different from the population mean. correct incorrect

It is the outer region in a sampling distribution of means. If scores fall in this area, we cannot conclude that your sample mean is significantly different from the population mean. correct incorrect

It is the outer region in a sampling distribution of means. If scores fall in this area, we can conclude that your sample mean is significantly different from the population mean. correct incorrect

It is the middle region in a sample distribution of means. If scores fall in this area, we cannot conclude that your sample mean is significantly different from the population mean. correct incorrect

* not completed

. What is a property of a critical z?

It is an error correct incorrect

It is a cutoff correct incorrect

It is a mean correct incorrect

It is a measure of variability correct incorrect

* not completed

. Type I error is...

Rejecting a null when it is true correct incorrect

Rejecting an alternative hypothesis when it is true correct incorrect

Failing to reject an alternative hypothesis when it is true correct incorrect

Failing to reject a null when it is true correct incorrect

* not completed

. Which of the following options has the smallest risk of Type I error?

Alpha level of 0.1 correct incorrect

Alpha level of 0.01 correct incorrect

Alpha level of 0.5 and a non-directional hypothesis correct incorrect

Alpha level of 0.5 and a directional hypothesis correct incorrect