2.33 College smokers: At a university, 16% of students smoke.a) Calculate the expected number of smokers in a random sample of 110 students from this university(please do not round your answer):b) The university gym opens at 9 am on Saturday mornings. One Saturday morning at 8:55 am there are 20students outside the gym waiting for it to open. Should you use the same approach from part (a) tocalculate the expected number of smokers among these 20 students?O Yes, it is reasonable to believe that people who go to the gym when it first opens on Saturdaymornings is a representative sampleO No, it is unlikely that smoking habits and waking up early to go to the gym on Saturday areindependent

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Answered: 2.33 College smokers: At a university,…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Organ Donors USA Today provided information about a survey of 5100 adult Internet users. Of the respondents, 2346 said they are willing to donate organs after death. In this survey conducted for Donate Life America, 100 adults were surveyed in each state and the District of Columbia, and results were weighted to account for the different state population sizes. a. What percentage of respondents said that they are willing to donate organs after death? b. Based on the poll results, what is the probability of randomly selecting an adult who is willing to donate organs after death? c. What term is used to describe the sampling method of randomly selecting 100 adults from each state and the District of Columbia?
a Pew research center surveyed ask adults in the United States which technology would be very hard to give up the following responses were obtained internet 70% smartphone 60% email 30% and landline 25%, If 2,000 owners of smartphones were surveyed what is the expected number that will report that it would be very hard to give up?
In a survey of 500 drivers from the South, 408 wear a seat belt. In a survey of 370 drivers from the Northeast, 288 wear a seat belt. At a = 0.07, can you support the claim that the proportion of drivers who wear seat belts is greater in the South than in the Northeast? Assume the random samples are independent. Complete parts (a) through (e). (a) Identify the claim and state Ho and Ha The claim is "the proportion of drivers who wear seat belts in the South is greater than in the Northeast." Let p, represent the population proportion for the South, and p2 represent the population proportion for the Northeast. State Hg and H Choose the correct answer below. O B. Ho: P1 = P2 OC. Ho: P, * P2 O A. Ho: P1 > P2 H: P, SP2 H: P, *P2 Ha: P1 = P2 O D. Ho: P1 P2 OF. Ho: P1 2 P2 H,: P, OC. z
After visiting the Titanic, Captain Brain and Mr. Pinky are taking the Alvin submarine back to the surface of the water. They start 1900 meters below the surface of the water, and ascend at 62 meters per hour.Note: under the water is a negative number.Write an equation to model this situation (use mm for meters and hh for hours)
80 percent of UNO students drive to campus. Which is more likely (a) Out of 10 randomly selected UNO students, exactly 5 drive to campus (b) Out of 20 randomly selected UNO students, exactly 10 drive to campus.
What percentage of hospitals provide at least some charity care? Based on a random sample of hospital reports from eastern states, the following information is obtained (units in percentage of hospitals providing at least some charity care):
1 V. A randomly selected sample of 1000 college students was asked whether they had ever used the drug STC sixteen percent (16%) of the 1000 students survived said they had. which one of the following statements about the number (0.16) is correct: A. It is a sample proportion. B. it is a population proportion. C.it is a margin of error. D. it is a randomly chosen number
Thirty-seven percent of the customers of a grocery store use an express checkout. In a random survey of ten customers: find the expected number (mean) of the number that use express checkout.
What requirement must be met to be a true random sample? A.The probability of selecting one individual is independent of selecting another individual. B. The probability of being selected stays constant from one selection to another. C. Each individual has an equal chance of being selected for the sample. D. All of the answers are correct. E. Sampling is done with replacement.

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