EXPERIMENT ONE On a standard test of attention span in children, Dr. Niederjohn
ID: 3305510 • Letter: E
Question
EXPERIMENT ONE
On a standard test of attention span in children, Dr. Niederjohn wants to know whether attention span is different in children who play video games extensively. He selects a sample of children who regularly play video games and those who do not and obtains the following attention-span data:
Video
No Video
23
19
19
17
28
24
21
21
24
27
27
21
28
23
23
18
25
19
23
22
1. Give the M and SD for each group:
Video
No Video
M (Experiment 1)
SD (Experiment 1)
2. Using SPSS compute the appropriate test. Paste SPSS output here.
3. With alpha set at .05, write a conclusion of the findings.
Be sure to report the appropriate statistic in APA style.
Video
No Video
23
19
19
17
28
24
21
21
24
27
27
21
28
23
23
18
25
19
23
22
Explanation / Answer
Sol:
SD (Experiment 1)
Solution2:
Perform t test for difference in means assuming unequal vrainaces
Solution3:
Null hypothesis:
Ho:mean of attenton span for video=mean of attention span for no video
Alternative Hypothesis:
H1::mean of attenton span for video not =mean of attention span for no video
alpha=0.05
Test statistic:
t=2.237
P=0.038
Decion rule:
if p<0.05 reject null hypothesis
if p>0.05 fail to rejecty null hypothesis
'Here p<0.05'
Decison:
Reject Null hypothesis
Conclusion:
there i sufficient evidence at 5% level of significance to co-onclude that attention span is different who regularly play video games and those who do not
Video No Video Mean 24.1 Mean 21.1 Standard Error 0.936305 Standard Error 0.959745 Median 23.5 Median 21 Mode 23 Mode 19 Standard Deviation 2.960856 Standard Deviation 3.034981 Sample Variance 8.766667 Sample Variance 9.211111 Kurtosis -0.62666 Kurtosis 0.059455 Skewness -0.12136 Skewness 0.596781 Range 9 Range 10 Minimum 19 Minimum 17 Maximum 28 Maximum 27 Sum 241 Sum 211 Count 10 Count 10Related Questions
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