Mathematics

Mathematics, 22.08.2019 22:40, madisonsan9020

Aschool cafeteria serves 200 students every 4 hours. at this rate, how many students can be served in 7 hours?

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Mathematics, 26.07.2019 10:30, Briza19

Aschool psychologist reports that the mean number of hours the students at this school sleep each night is 8 hours. the students believe the mean is not 8 hours. to find an estimate of the true mean, they select a random sample of 15 students from their school and ask how many hours each slept last night. a stemplot and boxplot of the numbers of hours are shown here. t he sample mean is 6.67 hours with a sample standard deviation of 1.88 hours. a. verify that the conditions for computing a confidence interval are met in this case. b. compute and interpret a 95% confidence interval for the mean number of hours the students at this school sleep each night.

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Mathematics, 10.10.2019 10:50, brydenskl814

Out of a population of 700 students, 120 were asked by a random sampling to choose the green vegetable they would like to have served in the cafeteria. their responses are shown in the table below. cafeteria choices green vegetable number of students peas 34 green beans 27 broccoli 23 zucchini 18 brussels sprouts 18 using proportional reasoning, about how many students out of the 700 would you expect to request broccoli to be served? 23 students 30 students 105 students 134 students

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Mathematics, 22.10.2019 22:00, nasrah

Aschool principal wanted to investigate student opinion about the food served in the school cafeteria. the principal selected at random samples of 50 first-year students, 50 second-year students, 50 third-year students, and 50 fourth-year students to complete a questionnaire. which of the following best describes the principal’s sampling plan?

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Mathematics, 23.10.2019 20:30, Tooey6225

Suppose you perform a study about the hours of sleep that college students get. you know that for all people, the average is about 7 hours. you randomly select 40 college students and survey them on their sleep habits. from this sample, the mean number of hours of sleep is found to be 6.2 hours with a standard deviation of 0.86 hours. you want to construct a 99% confidence interval for the mean nightly hours of sleep for all college students. (a) what is the point estimate for the mean nightly hours of sleep for all college students? hours

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