stats
posted by pls check on .
Question 5 of 10 A zscore of 2.0 is two standard deviations above the mean of the distribution (t).
True
False
I chose answer A
The z scores is a ratio of difference to variability (t).
True
False
I chose False
Question 6 of 10 Whatâ€™s the probability that an individual, selected at random, will score below the mean on any normally distributed characteristic? (Points : 1)
p = 0
p = .1
p = .5
p = 1.0
I chose p=0
A statistically significant outcome in a ztest indicates which of the following? (Points : 1)
The sample is not characteristic of the population.
The sample could not have been randomly selected.
The sample is characteristic of the population.
The sample represents other samples in the original population.
I chose the last one
Question 8 of 10 A distribution where the mean and standard deviation have predetermined values calls for ________. (Points : 1)
raw scores
z scores
modified standard scores
percentile rankings
I chose modified standard scores
Question 9 of 10 Which is true of a onetailed test? (Points : 1)
The alternate hypothesis specifies the direction of difference.
The null hypothesis specifies the direction of difference.
There is no alternate hypothesis.
The null hypothesis becomes the research hypothesis.
I chose there is no alternate hyothesis
Question 10 of 10 What is the critical value of t for a twotailed ttest in which n = 10? (Points : 1)
2.262
2.228
.05
.01
I chose .05

I'll help with the last two:
9. The alternate hypothesis shows a specific direction in a onetailed test.
10. 2.262 (degrees of freedom would be n  1) 
A statistically significant outcome in a ztest indicates which of the following? (Points : 1)
The sample is not characteristic of the population.
The sample could not have been randomly selected.
The sample is characteristic of the population.
The sample represents other samples in the original population.