Question

The data below is your data set for your mini lab. For this assignment, you are the researcher. You gave the facial recognition 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 5 5 8 5 6 7 4 5 3 4 8 5 10 6 5 5 8 7 5 6
Females 9 8 7 7 9 8 8 8 9 10 7 9 8 9 7 9 8 7 9 7 .

Calculate the mean number of correct responses (hits) for male subjects. Round to the nearest hundreths place

2. Calculate the Standard Deviation (SD) of the correct reponses for male subjects. Round to the nearest hundreths place

3. Calculate the Standard Error of Mean (SEM) of correct responses for male subjects. Round to the nearest hundreths place.

4. Calculate the mean number of correct responses (hits) for female subjects. Round to the nearest hundreths place

5. Calculate the Standard Deviation (SD) of the correct reponses for female subjects. Round to the nearest hundreths place

6. Calculate the Standard Error of Mean (SEM) of correct responses for female subjects. Round to the nearest hundreths place.

7. 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 females.

8. What is the degree of freedom associated with this t test.

9. The p value associated with the t value is
a. less than .05
b. greater than .05
c. I have no idea

10. Based on your calculations, would you reject the null hypothes that there is no difference between males and females on this recognition task?
a. Yes, I would reject the null hypothesis.
b. No, I would not reject the null hypothesis.
c. I have no idea.

Answer 1

MALE hits

1.) Mean -> 5.85

2.) Standard Deviation->

1.694418

3.) Standard error ->  

0.378883

FEMALE hits

4.) Mean->

8.15

5.) Standard Deviation->

0.933302

6.) Standard Error->

0.208693

Find image with calculations of t tests

where degree of freedom is 19

treatment 1 is male

treatment 2 is females

t value for significance level .05 is -5.32