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Homework: Ch7 HW ONLINE
Score: 0.5 of 1 pt
7.4.15
43 of 45 (45 complete)
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HW Score: 92.78%, 41.75 of 45 pts
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Compute P(X) using the binomial probability formula. Then determine whether the normal distribution can be used to estimate this probability. If so, approximate P(X)
using the normal distribution and compare the result with the exact probability.
n 64, p = 0.3, and X=31
Click the icon to view a table of areas under the normal curve.
For n = 64, p = 0.3, and X = 31, use the binomial probability formula to find P(X).
.0008 (Round to four decimal places as needed.)
Why can the normal distribution be used to approximate this probability?
A. Because √np(1 - p) ≥ 10
B. Because np(1 - p) ≤ 10
C. Because np(1 - p) ≥ 10
Because √np(1-p) ≤ 10
Approximate P(X) using the normal distribution. Use a standard normal distribution table.
P(X)= .0006 (Round to four decimal places as needed.)
By how much do the exact and approximated probabilities differ?
(Round to four decimal places as needed.)
Enter your answer in the answer box and then click Check Answer.
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