Assume that 34.3% of people have sleepwalked. Assume that in a random sample of 1541 adults, 572 have sleepwalked.
a. Assuming that the rate of 34.3% is correct, find the probability that 572 or more of the 1541 adults have sleepwalked.
b. Is that result of 572 or more significantly high?
c. What does the result suggest about the rate of 34.3%?
a. Assuming that the rate of 34.3% is correct, the probability that 572 or more of the 1541 adults have sleepwalked is
nothing.
(Round to four decimal places as needed.)
b. Is that result of 572 or more significantly high?
▼
No,
Yes,
because the probability of this event is
▼
greater
less
than the probability cutoff that corresponds to a significant event, which is
▼
0.5.
0.05.
0.95.
c. What does the result suggest about the rate of 34.3%?
A.
The results do not indicate anything about the scientist's assumption.
B.
Since the result of 572 adults that have sleepwalked is not significantly high, it is not strong evidence against the assumed rate of 34.3%.
C.
Since the result of 572 adults that have sleepwalked is significantly high, it is strong evidence against the assumed rate of 34.3%.
D.
Since the result of 572 adults that have sleepwalked is significantly high, it is strong evidence supporting the assumed rate of 34.3%.
E.
Since the result of 572 adults that have sleepwalked is significantly high, it is not strong evidence against the assumed rate of 34.3%.
F.
Since the result of 572 adults that have sleepwalked is not significantly high, it is strong evidence against the assumed rate of 34.3%.
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