Mathematics, 22.04.2021 20:40 pippalotta
From a random sample of 1201 Americans, it was discovered that 1139 of them lived in neighborhoods with acceptable levels of carbon monoxide. a.Obtain a point estimate for the proportion of American who live in neighborhoods with acceptable levels of carbon monoxide. b. Construct a 99% confidence interval for the proportion of Americans who live in neighborhoods with acceptable levels of carbon monoxide. c. You wish to conduct your own study to determine the proportion of Americans who live in neighborhoods with acceptable levels of carbon monoxide. What sample size would be needed for the estimateto be within 1.5 percentage points with 99% confidence if you use the estimate in part a.
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Mathematics, 21.06.2019 13:50
Question and answers are in the attached picture. you so much in advance.
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Mathematics, 21.06.2019 17:30
33% of college students say they use credit cards because of the rewards program. you randomly select 10 college students and ask each to name the reason he or she uses credit cards. find the probability that the number of college students who say they use credit cards because of the rewards program is (a) exactly two, (b) more than two, and (c) between two and five inclusive. if convenient, use technology to find the probabilities.
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Mathematics, 21.06.2019 21:00
Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.
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Mathematics, 21.06.2019 21:20
52 cm radius = diameter = area = circumference = circumfer
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From a random sample of 1201 Americans, it was discovered that 1139 of them lived in neighborhoods w...
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