The length of time it takes to complete a word puzzle is found to be normally distributed with a mean of 71 seconds and a standard deviation of 12 seconds. Using the 50%-34% -14% figures, find the approximate percentages of scores (on time to complete the word puzzle) that will be above or below the following values. (a) Above 59 (f) Below 71 (b) Below 59 (g) Above 95 (c) Above 47 (h) Below 95 (d) Below 47 (i) Above 83 (e) Above 71 (i) Below 83

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The length of time it takes to complete a word puzzle is found to be normally distributed with a mean of 71 seconds and a standard deviation of 12 seconds.
Using the 50%-34%-14% figures, find the approximate percentages of scores (on time to complete the word puzzle) that will be above or below the following
values.
(a) Above 59
(f) Below 71
(b) Below 59
(g) Above 95
(c) Above 47
(h) Below 95
(d) Below 47
(i) Above 83
(e) Above 71
(j) Below 83
Transcribed Image Text:The length of time it takes to complete a word puzzle is found to be normally distributed with a mean of 71 seconds and a standard deviation of 12 seconds. Using the 50%-34%-14% figures, find the approximate percentages of scores (on time to complete the word puzzle) that will be above or below the following values. (a) Above 59 (f) Below 71 (b) Below 59 (g) Above 95 (c) Above 47 (h) Below 95 (d) Below 47 (i) Above 83 (e) Above 71 (j) Below 83
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