Question

In: Statistics and Probability

Survey Study Habits and Attitude (SSHA) is a psychological test designed to measure motivation, habits and attitudes towards learning among college students in the United States.

 

SSHA score

Survey Study Habits and Attitude (SSHA) is a psychological test designed to measure motivation, habits and attitudes towards learning among college students in the United States. The scores on the SSHA range from 0 to 200. In a study at an American college, The SSHA, SPSS file is attached below with the number SPSS FILE 1 AND 2..

1- Give a descriptive description of the SSHA score, with mean, median, standard deviation and any other descriptive targets that can describe this data.

2- Are the SSHA slots normalized?

The study also indicates whether you are female (sex = 0) or male (sex = 1).

3- Provide a 95% confidence interval for the average for women and men individually.

4- Show that confidentiality ranges for women and men are overlapping.

A researcher of you claims that the impossible can be statistically significant difference between the SSHA scores as long as the confidence intervals are (partially) overlapping. What do you mean about this claim?

5- Test the hypothesis that the SSHA scores are equal for men and women. What is the conclusion? Be sure to check the assumptions that lie behind the test

6- Summarize the conclusion in point 5 to what you got in point 4, and what can you tell your alleged researcher?

SPSS FILE 1.

Score

154
109
137
115
152
140
154
168
101
103
126
126
137
165
165
128
180
148
108
140
114
91
175
115
126
92
169
146
109
132
75
88
113
151
70
115
169
104

SPSS FILE 2.

SEX

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

Solutions

Expert Solution

Result:

1- Give a descriptive description of the SSHA score, with mean, median, standard deviation and any other descriptive targets that can describe this data.

Statistics

SSHA score

N

Valid

38

Missing

0

Mean

129.21

Median

127.00

Std. Deviation

28.774

Minimum

70

Maximum

180

2- Are the SSHA slots normalized?

The plot shows the data are not approximately normal.

The study also indicates whether you are female (sex = 0) or male (sex = 1).

3- Provide a 95% confidence interval for the average for women and men individually.

95% CI for female= (127.73, 150.94)

95% CI for male= (105.75, 134.45)

Descriptives

sex

Statistic

Std. Error

SSHA score

female

Mean

139.33

5.500

95% Confidence Interval for Mean

Lower Bound

127.73

Upper Bound

150.94

5% Trimmed Mean

139.20

Median

138.50

Variance

544.471

Std. Deviation

23.334

Minimum

101

Maximum

180

Range

79

Interquartile Range

34

Skewness

-0.100

0.536

Kurtosis

-0.903

1.038

Male

Mean

120.10

6.858

95% Confidence Interval for Mean

Lower Bound

105.75

Upper Bound

134.45

5% Trimmed Mean

119.83

Median

114.50

Variance

940.726

Std. Deviation

30.671

Minimum

70

Maximum

175

Range

105

Interquartile Range

50

Skewness

0.305

0.512

Kurtosis

-0.681

0.992

4- Show that confidentiality ranges for women and men are overlapping.

A researcher of you claims that the impossible can be statistically significant difference between the SSHA scores as long as the confidence intervals are (partially) overlapping. What do you mean about this claim?

95% CI for female= (127.73, 150.94)

95% CI for male= (105.75, 134.45)

The two 95% confidence intervals are overlapping. There for there is no statistically significant difference between the SSHA scores of males and females at 95% level..

5- Test the hypothesis that the SSHA scores are equal for men and women. What is the conclusion? Be sure to check the assumptions that lie behind the test

Group Statistics

sex

N

Mean

Std. Deviation

Std. Error Mean

SSHA score

female

18

139.33

23.334

5.500

Male

20

120.10

30.671

6.858

Independent Samples Test

Levene's Test for Equality of Variances

t-test for Equality of Means

F

Sig.

t

df

Sig. (2-tailed)

Mean Difference

Std. Error Difference

95% Confidence Interval of the Difference

Lower

Upper

SSHA score

Equal variances assumed

1.287

0.264

2.156

36

0.038

19.233

8.919

1.145

37.322

Equal variances not assumed

2.188

35.080

0.035

19.233

8.791

1.388

37.079

To test the equality of variance of males and females, calculated Levene's Test for Equality of Variances F=1.287, P=0.264 which is > 0.05 level. The assumption of equality of variance is not violated.

To test the equality of means of males and females, calculated t=2.156, P=0.038 which is < 0.05 level. We conclude that the means of males and females are different.

6- Summarize the conclusion in point 5 to what you got in point 4, and what can you tell your alleged researcher?

The hypothesis test shows there is a significant difference and confidence intervals result shows that there is no difference of means. By considering the no normality of the distribution of the data, nonparametric method of comparison of means of males and females are recommended.


Related Solutions

Survey Study Habits and Attitude (SSHA) is a psychological test designed to measure motivation, habits and attitudes towards learning among college students in the United States
  SSHA score Survey Study Habits and Attitude (SSHA) is a psychological test designed to measure motivation, habits and attitudes towards learning among college students in the United States. The scores on the SSHA range from 0 to 200. In a study at an American college, the results were included in the data file SSHA.SAV. 1- Give a descriptive description of the SSHA score, with mean, median, standard deviation and any other descriptive targets that can describe this data. 2-...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation,...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude toward school, and study habits of students. Scores range from 0 to 200. A selective private college gives the SSHA to an SRS of both male and female first-year students. The data for the women are as follows: 154 109 137 115 152 140 154 178 101 103 126 126 137 165 165 129 200 148 Here are the scores of the men:...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation,...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude toward school, and study habits of students. Scores range from 0 to 200, with 200 being the highest level of motivation. The mean score for U.S. college students is about 115, and the standard deviation is about 30. A teacher who suspects that older students have better attitudes toward school gives the SSHA to 20 students who are at least 30 years of...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation,...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitudes, and study habits of college students. Scores range from 0 to 200 and follow, approximately, a Normal distribution, with mean 115 and standard deviation ?=25σ=25 . You suspect that incoming freshman have a mean ?μ that is different from 115, since they are often excited yet anxious about entering college. To verify your suspicion, you test the hypotheses ?0:?=115H0:μ=115 , ??:?≠115Hα:μ≠115 . You...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation,...
The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude toward school, and study habits of students. Scores range from 0 to 200. A selective private college gives the SSHA to an SRS of both male and female first-year students. The data for the women are as follows: 154 109 137 115 152 140 154 178 101 103 126 126 137 165 165 129 200 148 Here are the scores of the men:...
The Survey of Study Habits and Attitudes (SSHA) is a phychological test that measures the motivation,...
The Survey of Study Habits and Attitudes (SSHA) is a phychological test that measures the motivation, attitude toward school, and study habits of students. Scores range from 0 to 200. The mean score for U.S. college students is about 115, and the standard deviation is about 30. A teacher who suspects that older students have better attitudes toward school gives that the SSHA to 25 students who are at least 30 years of age. Their mean is ¯x = 127.8....
6.73 Attitudes toward school. The Survey of Study Habits and Attitudes (SSHA) is a psychological test...
6.73 Attitudes toward school. The Survey of Study Habits and Attitudes (SSHA) is a psychological test that measures the motivation, attitude toward school, and study habits of students. Scores range from 0 to 200. The mean score for U.S. college students is about 95, and the standard deviation is about 20. A teacher who suspects that older students have better attitudes toward school gives the SSHA to 25 students who are at least 30 years of age. Their mean score...
The following is data on the Survey of Study Habits and Attitudes (SSHA) scores for 18...
The following is data on the Survey of Study Habits and Attitudes (SSHA) scores for 18 female college students. The test evaluates motivation, study habits, and attitudes toward school. Create an appropriate frequency distribution to describe the data set. Interpret the results. how to input into excel Student # Score 1 154 2 109 3 137 4 115 5 152 6 140 7 154 8 178 9 101 10 103 11 126 12 126 13 137 14 165 15 165...
A study was designed to compare the attitudes of two groups of nursing students towards computers....
A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken a statistical methods course that involved significant computer interaction. Group 2 had taken a statistic methods course that did not use computers. The students' attitudes were measured by administering the Computer Anxiety Rating Scale (CARS). A random sample of 11 nursing students from Group 1 resulted in a mean score of 56.1 with a standard deviation of 5.5 A...
A study was designed to compare the attitudes of two groups of nursing students towards computers....
A study was designed to compare the attitudes of two groups of nursing students towards computers. Group 1 had previously taken a statistical methods course that involved significant computer interaction. Group 2 had taken a statistic methods course that did not use computers. The students' attitudes were measured by administering the Computer Anxiety Rating Scale (CARS). A random sample of 12 nursing students from Group 1 resulted in a mean score of 47.5 with a standard deviation of 7.8. A...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT