2.For a population with a mean of = 55 and a standard deviation of = 15, what is the standard error of the distribution of sample means for a sample size of n=15? leave the answer to the nearest hundredths place.

3. The mean weight of super model winners is less than 108 pounds. A study of 25 randomly selected super model resulted in a mean winner weight of 115 pounds. Choose the correct Null and Alternative Hypothesis

5. For a population with a mean of = 28 and a standard deviation of = 14, find the z-score corresponding to M = 26 for a sample of n = 4 scores.

6. Find the t values that form the boundaries of the critical region for a two-tailed test with = 0.10 for a sample size of sample 1 is 10 and sample 2 is 11.

7. In an experiment, a group of college students was told that they were participating in a manual skill study. Half of the students were given a stack of money to count and the other half got a stack of blank pieces of paper. After the counting task, the participants were asked to dip their hands into bowls of very hot water (122F) and rate how uncomfortable it was. Given the following data; Find the estimated error of the mean only.

For counting Money: n1=10, M1=288, SS1=288

For counting Paper: n2 =10, M2=60, SS2=409

Please type the estimated error of the mean only in nearest hundredths place.

8. In an experiment, a group of college students was told that they were participating in a manual skill study. Half of the students were given a stack of money to count and the other half got a stack of blank pieces of paper. After the counting task, the participants were asked to dip their hands into bowls of very hot water (122F) and rate how uncomfortable it was. Given the following data; Find the Test statistics for two independent samples.

For counting Money: n1=10, M1=52, SS1=2300

For counting Paper: n2 =10, M2=60, SS2=2346

Please type the test statistics only in nearest hundredths place.

9. College Professors have incomes with a standard deviation that is less than $21,000. A recent study of 225 College Professors income showed a standard deviation of $24,750. State whether it is one tail or two tails.

A. LEFT TAIL (ONE)

B. RIGHT TAIL(ONE)

C. TWO TAILED

D. IN BETWEEN

10.Find the estimated standard error for the sample mean for n = 11 and SS = 3929. Nearest hundredths place.

11. Two separate samples, each with n = 14 individuals, receive different treatments. After treatment, the first sample has SS = 1550 and the second has SS = 1620. Find the pooled Variance for two independent samples. (hundredths place)

Type only the pooled variance.