PSY 325 Week 2 Quiz Recent

PSY 325 Week 2 Quiz Set 1

1. Question : The table value z = .70 is .2580. The z = .70 value occurs at what equivalent percentile?

2. Question : Rejecting the null hypothesis is the same as saying _____________.

3. Question : If the z transformation is used with population data, M is replaced by what symbol?

4. Question : How does the standard normal distribution differs from other normal distributions?

5. Question : A one-sample t value is statistically significant in which situation?

6. Question : All standard scores have which characteristic in common?

7. Question : If x = 12, M = 10 and s = 2, z = _______.

8. Question : The distribution of sample means refers to _______________.

9. Question : A distribution where the mean and standard deviation have pre-determined values calls for ________.

10. Question : If the mean of the distribution of sample means isn’t given, how is it determined?

PSY 325 Week 2 Quiz Set 2

Question :The table value z = .70 IS 2580. What percent of the population occurs below that point?

The z-test asks whether the population from which thesample was drawn has the same mean as the population to which it is compared True.

Question 3

4. Based on past experience, the probability that the sun will rise tomorrow is?

5 Rejecting the null hypothesis is the same as saying?

6 How many standard deviations below is 3 if z= -1.75

7 Degrees of Freedom refers to

How many values can vary

8 If instead of z = (x – M) / s the formula is x = z(s) + M, what is the result?

9 How does standard normal distribution differ from other normal distributions?.

10 What is the similarity between the z test and one sample t test?

PSY 325 Week 2 Quiz Set 3

Based on past experience, the probability that the sun will rise tomorrow is ________.

The standard error of the difference is a measure of pooled variance.

The z scores is a ratio of difference to variability (t).

How is the z-test different from z-score analysis?

What advantage does the one-sample t offer over the z-test?

In a distribution for which the mean is 25 and the standard deviation is 5, what percentage of all scores occur at 30 or below?

Which is true of a one-tailed test?

The distribution upon which the z-test is based has a mean of 1.0.

In a distribution for which the mean is 25 and the standard deviation is 5, what percentage of all scores occur between 20 and 30?

The z-test asks whether the population from which the sample was drawn has the same mean as the population to which it is compared.