Mathematics Homework Help

UMGC the Standard Deviation and the Standard Error of the Mean Question

 

The data below is your practice data set for your lab. For this assignment, you are the researcher. You gave the stroop effect lab to 40 students, 20 males and 20 females. The data set below contains the number of correct hits for each subject.

Complete the calculations below based on the data provided.

males         

females

4

9

5

8

7

7

6

7

6

9

6

10

5

8

5

8

3

9

3

10

8

7

6

9

9

8

5

9

4

8

5

9

7

8

7

8

6

7

6

9

Question 1 (2 points)

Calculate the Mean number of correct responses (hits) for male subjects.

Round your answer to the nearest hundredths place.

For example: 1.11

Question 2 (2 points)

Calculate the Standard Deviation (SD) of the correct responses for male subjects.

Round your answer to the nearest hundredths place.

For example: 1.11

Question 3 (2 points)

calculate the Standard Error of the Mean (SEM) of the correct responses for male subjects.

Round your answer to the nearest hundredths place.

For example: 1.11

Question 4 (2 points)

Calculate the Mean number of correct responses (hits) for female subjects.

Round your answer to the nearest hundredths place.

For example: 1.11

Question 5 (2 points)

Calculate the Standard Deviation (SD) of the correct responses for female subjects.

Round your answer to the nearest hundredths place.

For example: 1.11

Question 6 (2 points)

Calculate the Standard Error of the Mean (SEM) of the correct responses for female subjects.

Round your answer to the nearest hundredths place.

For example: 1.11

Question 7 (2 points)

Use a statistical software program or your favorite stats website and find the t value for an unpaired 2 sample t test using the data from the 2 groups, the males and the females.

Suggested website: http://graphpad.com/quickcalcs/ttest1/

Round your answer to the nearest hundredths place.

For example: 1.11

Question 8 (2 points)

What is the degrees of freedom associated with this t test?

Enter the numerical value. For example: 99; not ninety-nine

Question 9 (2 points)

The p value associated with your t value is:

Question 9 options:

less than .05

greater than .05

I have no idea.

Question 10 (2 points)

Based on your calculations, would you reject the null hypothesis that there is no difference between males and females on this facial recognition task?Question 10 options:

Yes, I would reject the null hypothesis.

No, I would not reject the null hypothesis.

I have no idea.