URGENT
2 answers:
Answer:
68%
Step-by-step explanation:
The attached normal table shows area under the standard normal curve that are to the left of a particular z-score.
To find the area between two z-scores, say , find the area to the left of
then subtract the area to the left of
. That difference is the area between the two z-scores.
38 minutes has a z-score
46 minutes has a z-score
Find z= 1.0 in the table. The area in that row is .8413.
Find z=-1.0 in the table. The area in that row is .1587.
The difference, .8413 - .1587 = .6826 is the area under the normal curve between z=-1 and z=1.
.6826 is about 68%
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