Answer:
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The answer is 30. 360/12.
Use the formula:
Radio= r, Height= h
V= 3.14xrx2h
r =25, h=31
V= 3.14 x 25 x 2 (31) =. 4867
V= 4867 cubic inches
Step-by-step explanation:
Answer: 95.45 %
Step-by-step explanation:
Given : The distribution is bell shaped , then the distribution must be normal distribution.
Mean :
Standard deviation :
The formula to calculate the z-score :-
For x = 13
For x = 19
The p-value =
In percent,
Hence, the percentage of data lie between 13 and 19 = 95.45 %
In total there are 20 students and only 6 read 1 book. So the answer would be 6/20