Complete the mcq:
1 On average, what value is expected for the t statistic when the null hypothesis is true?
1
1.96
0
t>1.96
2 What is the sample variance and the estimated standard error for a sample of n=9 scores with SS= 72?
s2=3 and sM=3
s2 and sM= 1
s2=9 and sM=3
s2=3 and sM=1
3 Which set of characteristics will produce the smallest value for the estimated standard error?
A large sample size and a small sample variance
A large sample size and a large sample variance
A sample sample size and a large sample variance
A small sample size and a small sample variance
4 A researcher conducts a hypothesis test using a sample from an unknown population. If the t statistic has df=30, how many individuals were in the sample?
n=30
cannot be determined from the information given
n=29
n=31
5 When n is small (less than 30) how does the shape of the t distribution compare to the normal distribution?
It is taller and narrower than the normal distribution
It is almost perfectly normal
There is no consistent relationship between the t distribution and the normal distribution.
It is flatter and more spread out than the normal distribution .
6 With o= .01, the two tailed critical region for a t test using a sample of n=16 subjects would have boundaries of :
t= ±2.602
t= ± 2.921
t=± 2.947
t= ± 2.583