Assume that 22.2% of people have sleepwalked. Assume that in a random sample of 1503 adults, 345 have sleepwalked. a. Assuming that the rate of 22.2% is correct, find the probability that 345 or more of the 1503 adults have sleepwalked. b. Is that result of 345 or more significantly high? c. What does the result suggest about the rate of 22.2%? a. Assuming that the rate of 22.2% is correct, the probability that 345 or more of the 1503 adults have sleepwalked is
Assume that 22.2% of people have sleepwalked. Assume that in a random sample of 1503 adults, 345 have sleepwalked. a. Assuming that the rate of 22.2% is correct, find the probability that 345 or more of the 1503 adults have sleepwalked. b. Is that result of 345 or more significantly high? c. What does the result suggest about the rate of 22.2%? a. Assuming that the rate of 22.2% is correct, the probability that 345 or more of the 1503 adults have sleepwalked is
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
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Transcribed Image Text:Assume that 22.2% of people have sleepwalked. Assume that in a random sample of 1503 adults, 345 have sleepwalked.
a. Assuming that the rate of 22.2% is correct, find the probability that 345 or more of the 1503 adults have sleepwalked.
b. Is that result of 345 or more significantly high?
c. What does the result suggest about the rate of 22.2%?
a. Assuming that the rate of 22.2% is correct, the probability that 345 or more of the 1503 adults have sleepwalked is
(Round to four decimal places as needed.)
b. Is that result of 345 or more significantly high?
v because the probability of this event is
v than the probability cutoff that corresponds to a significant event, which
c. What does the result suggest about the rate of 22.2%?
O A. Since the result of 345 adults that have sleepwalked is significantly high, it is strong evidence against the assumed rate of 22.2%.
B. Since the result of 345 adults that have sleepwalked is not significantly high, it is not strong evidence supporting the assumed rate of 22.2%.
O C. Since the result of 345 adults that have sleepwalked is not significantly high, it is not strong evidence against the assumed rate of 22.2%.
D. Since the result of 345 adults that have sleepwalked is not significantly high, it is strong evidence against the assumed rate of 22.2%.
O E. The results do not indicate anything about the scientist's assumption.
1
O F. Since the result of 345 adults that have sleepwalked is significantly high, it is not strong evidence against the assumed rate of 22.2%.
1 of
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This course (Elementary Statistics Section T) is based on Triola: Elementary Statistics, 13e
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