Mathematics, 24.03.2020 22:35, taishaun
(4.2.20) An insurance company offers a discount to homeowners who install smoke detectors in their homes. A company representative claims that 80% or more of policyholders have smoke detectors. You draw a random sample of eight policyholders. Let X be the number of policyholders in the sample who have smoke detectors. a. If exactly 80% of the policyholders have smoke detectors, what is P(X β€ 1)? b. Based on the answer to part (a), if 80% of the policyholders have smoke detectors, would one policyholder with a smoke detector in a sample of size 8 be an unusual small number? Explain. c. If you found that one of the eight sample policyholders had a smoke detector, would this be convincing evidence that the claim is false? Explain. d. If exactly 80% of the policyholders have smoke detectors, what is P(X β€ 6)? e. Based on the answer to part (d), if 80% of the policyholders have smoke detectors, would six policy holders with smoke detectors in a sample of size 8 be an unusually small number? Explain. f. If you found that six of the eight sample policyholders had smoke detectors, would this be convincing evidence that the claim is false? Explain.
Answers: 2
Mathematics, 21.06.2019 17:40, sophiateaches053
If sec theta = 5/3 and the terminal point determined by theta is in quadrant 4, then
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Mathematics, 21.06.2019 19:20, Courtneymorris19
Which of the following is the result of expanding the series
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Mathematics, 21.06.2019 19:30, cykopath
Me max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about maxβs data must be true? a) the median of maxβs data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.
Answers: 2
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