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You participated in the “facial recognition lab”. That exercise is the basis for
You participated in the “facial recognition lab”. That exercise is the basis for the mini lab report. At the end of the exercise you were given a number of “hits” which is operationally defined as the number of correct responses.
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.
malesfemales
37
66
67
48
67
610
68
58
38
310
68
69
99
58
48
59
79
68
68
79
Question 1
Calculate the Mean number of correct responses (hits) for male subjects.
Round your answer to the nearest hundredths place.
For example: 1.11
Answer:_______
Question 2
Calculate the Standard Deviation (SD) of the correct responses for male subjects.
Round your answer to the nearest hundredths place.
For example: 1.11
Answer:_______
Question 3
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
Answer:_______
Question 4
Calculate the Mean number of correct responses (hits) for female subjects.
Round your answer to the nearest hundredths place.
For example: 1.11
Answer:_______
Question 5
Calculate the Standard Deviation (SD) of the correct responses for female subjects.
Round your answer to the nearest hundredths place.
For example: 1.11
Answer:_______
Question 6
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
Answer:_______
Question 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 the females.
Suggested website: http://graphpad.com/quickcalcs/ttest1/
Round your answer to the nearest hundredths place.
For example: 1.11
Answer:_______
Question 8
What is the degrees of freedom associated with this t test?
Enter the numerical value. For example: 99; not ninety-nine
Answer:_______
Question 9
The p value associated with your t value is:
(a) less than .05
(b) greater than .05
(c) I have no idea.
Question 10
Based on your calculations, would you reject the null hypothesis that there is no difference between males and females on this facial recognition task?
(a)Yes, I would reject the null hypothesis.
(b)No, I would not reject the null hypothesis.
(b)I have no idea.
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