Mathematics, 26.11.2019 23:31 levicorey846
In a sample of 610 boston-area residents selected on july 2, 209 reported that they were planning to travel beyond massachusetts for the july 4th holiday.
(a) use these data to find a 95% confidence interval for the proportion (p) of all boston-area residents who plan to travel beyond massachusetts for the holiday. [you may assume that the sample is random.]
(b) repeat part (a) but compute a 90% confidence interval for p.
(c) repeat part (a) but compute an 80% confidence interval for p.
(d) explain how the margins of error associated with your intervals in parts (a), (b), and (c) vary with the level of confidence (c) desired.
Answers: 3
Mathematics, 21.06.2019 18:00
The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?
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Mathematics, 21.06.2019 18:40
This stem-and-leaf plot represents the heights of the students on ralph's basketball team. one student's height is missing from the plot. if the mean height of all the students on the team is 61 inches, what is the missing height? a. 55 in. b. 59 in. c. 61 in. d. 65 in.
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Mathematics, 21.06.2019 19:50
If your teacher tells you to do questions 6 through 19 in your math book for homework, how many questions is that
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In a sample of 610 boston-area residents selected on july 2, 209 reported that they were planning to...
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