In a random sample of n = 500 drivers, 100 individuals say that they never wear a seatbelt when driving.(a) Give a numerical value of p = sample proportion that never wears a seatbelt when driving.p =(b) Calculate the standard error, s.e., of p. (Give the answer to four decimal places.)s.e.(p) =(c) In a different survey of n = 1000 drivers, 200 people say they never wear a seatbelt when driving. Give numerical values for p and the standard error, s.e., of p. (Give the answer to fourdecimal places.)Ŕ=s.e.(p)=

The objective of the question is to calculate the sample proportion (p) and the standard error of…

Answered: In a random sample of n = 500 drivers,…

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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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
Suppose the sample size is n=100 and the proportion of interest in the population is 25% what is the standard error? A. 0.0019 B. 0.025 C. 0.0433 D. None of these.
Use the results from a survey of a simple random sample of 1108 adults. Among the 1108 respondents, 84% rated themselves as above average drivers. We want to test the claim that 3/4 of adults rate themselves as above average drivers. a. Identify the actual number of respondents who rated themselves as above average drivers.
Suppose a random sample of n=60 college students were surveyed and r=11 of them said that blue is their favorite color. Use a=0.05. What is the value of the sample test statistic? Find the p value. 80% of all supermarketsprices end in the digit 9 or 5. Suppose a random sample of 116 items in a suoermarket find that 87 have prices that end in 9 or 5. Use a=0.05. What is the value of the sample test statistic? Find the p value.
A survey of 2,510 golfers showed that 311 of them are left-handed. Find a point estimate for p, the population proportion of golfers that are left-handed. A. 0.11 B. 0.124 C. 0.141 D. 0.876
In a simple random sample of 1200 young people, 86% had earned a high school diploma. What is the standard error for this estimate of the percentage of all young people who earned a high school diploma?
Use the Normal model N(100,20) for the IQs of sample participants. a) What IQ represents the 15th percentile? b) What IQ represents the 96th percentile? c) What's the IQR of the IQs? a) The IQ representing the 15th percentile is (Round to one decimal place as needed.) ...
"A manufacturer of shampoo claims that 72% of the shampoo users prefer brand X. To test this claim, a random sample of 44 participants are selected and asked what brand they prefer. If 31 of the 44 participants prefer brand X, what conclusion do we draw? Use a 0.1 level of significance. What are the given? hypothesized proportion:Blank 1% sample proportion:Blank 2 (Write your answer in fraction form form and simplify your answer) sample size:Blank 3 level of significance:Blank 4 What are the critical values? Write the positve first then the negative z:Blank 5 andBlank 6 What is the calculated z? Round your answer to the nearest hundredths. z:Blank 7"
Suppose 420 randomly selected people are surveyed to determine whether or not they subscribe to cable TV. Of the 420 surveyed, 250 reported subscribing to cable TV. What is the sample proportion for failures, q′? Round the final answer to three decimal places.
To evaluate the current status of physical activity in university students at BU, a student in Business surveyed students from their class by randomly selecting 12 rows and collecting data one 2 people from each of the selected rows. The question asked: "How many hours per week do you exercise?" What is the sample? O Students in Business at BU. O The 24 surveyed students. O Students at BU Everyone at BU. ONone of the above.
A poll in 2017 reported that 680 out of 1026 adults in a certain country believe that marijuana should be legalized. When this poll about the same subject was first conducted in 1969, only 12% of the adults of the country supported legalization. Assume the conditions for using the CLT are met. Complete parts (a) through (d) below. a. Find and interpret a 99% confidence interval for the proportion of adults in the country in 2017 that believe marijuana should be legalized. The 99% confidence interval for the proportion of adults in the country in 2017 that believe marijuana should be legalized is (. ). (Round to three decimal places as needed.) Interpret this interval. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals rounded to three decimal places as needed.) O A. We are % confident that the population proportion of adults who believe marijuana should be legalized is between and O B. There is a % chance that the population…
We selected a random sample of size 200 from a pool of university students and asked whether they use Facebook on a regular basis. Eighty replied yes. What would be your estimation of the standard error of the sample proportion of regular Facebook users based upon the given information?

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