Research suggests that peace and quiet after learning can help memory consolidat
ID: 3048093 • Letter: R
Question
Research suggests that peace and quiet after learning can help memory consolidation. To test whether this is true, a researcher recorded the length of time that 10 high-performing students spent in peace and quiet after classes each day for 2 weeks. The data are listed in the table.
(a) Use SPSS to calculate the mean and standard deviation of this sample. (Round your answers to two decimal places.)
mean ...... minutes
standard deviation ...... minutes
(b) Calculate a 95% confidence interval for the mean that you calculated in (a). (Round your answers to two decimal places.)
between ..... and ......... minutes
(in minutes) 2 10 16 35 21 7 97 105 130 55
Explanation / Answer
The statistical software output for this problem is:
Summary statistics:
One sample T confidence interval:
: Mean of variable
95% confidence interval results:
Hence,
a) Mean = 47.8 minutes
Standard deviation = 46.65 minutes
b) 95% confidence interval:
Between 14.43 and 81.17 minutes
Column Mean Std. dev. Peace and Quiet Per Day 47.8 46.649521Related Questions
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