50 people are selected randomly from a certain population and it is found that 13 people in the sample are over 6 feet tall. What is the point estimate of the proportion of people in the population who are over 6 feet tall? Group of answer choices 0.190 0.740 0.500 0.260

Q: a sample of n=20 scores has a mean of M=30. A second sample of n=10 scores has a mean of M=50. If…

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Q: A random sample of medical files is used to estimate the proportion p of all people who have blood…

A: Given Information: Error (e)  = 0.07  confidence level = 99%  p = 0.5 (given)

Q: Many people think that a national lobby's successful fight against gun control legislation is…

A: Given that , A random sample of 4000 citizens yielded 2130 who are in favor of gun control…

Q: Out of 600 people sampled, 120 said they prefer Coke over Pepsi. What is the point estimate for the…

A: From the provided information, Sample size (n) = 600 120 said they prefer Coke over Pepsi that is x…

Q: College officials want to estimate the percentage of students who carry a gun, knife, or other such…

A: a) The confidence level is 93%. Therefore, α = 0.07, α/2=0.035 and 1-α/2=0.965. The margin of error…

Q: Sleep apnea is a condition which the sufferers stop breathing momentarily while they are asleep.…

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Q: a researcher wants to estimate a population proportion with a margin of error of 0.05. What is the…

A: Given that the margin of error is 0.05. Given confidence level is 95% Significance level is 5% From…

Q: Linda Silbers is a social scientist studying voter opinion about a city bond proposal for a…

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Q: survey research company uses random digit dialing. They have a contract to estimate the percentage…

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Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: Let p be the population proportion  p=5.9%=0.059  Let X be the number of people who suffer from…

Q: 3. Abigail is running a fundraiser for Love Week where students can buy a rose for somebody and…

A: The 95% confidence interval for the proportion of students who would be interested in sending yellow…

Q: 1) In a four-year psychedelic-mushroom experiment, 93 of the 300 subjects reported experiencing…

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Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

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Q: Suppose you take a sample of 25 Reese's pieces. The proportion of orange is 0.55. What is the…

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Q: Close Confidants and Social Networking SitesA previous exercise introduced a study in which 2006…

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Q: An apple orchard's workers pick 12,500 apples in the month of October. A sample of 300 of these…

A: To find: The best estimate of the percent of apples picked at the orchard in October that are…

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

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Q: Q1. A random sample of 100 patients treated in a program for alcoholism and drug dependency over the…

A: As per our guidelines we are suppose to answer only one question1)Givensample size(n)=100No. of…

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: We have to find test statastics.

Q: 3) In 2005, 21% of Americans reported that they smoked cigarettes. In a recent study to see if the…

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Q: A survey of 250 households showed 71 owned at least one snow blower. Find a point estimate for p,…

A: Solution-: X=71, n=250 We want to find the point estimate of p?

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: Givenx=19n=308p^=19308=0.0617α=0.05

Q: What important feature is missing in the following scenario?

A: Given: The confidence interval for proportion is, (17.8% , 22.4%) The sample size = n = 1028

Q: The maker of a packaged candy wants to evaluate the quality of her production process. On each of 16…

A: Control charts have three points, they are upper limit, lower limit and centre line. They are used…

Q: The owner of a bowling alley wants to estimate the percent of bowlers in the senior league. How…

A: Hi, you have posted multiple different question in one post . As per the guidelines I am obliged to…

Q: A programmer plans to develop a new software system. In planning for the operating system that he…

A: a) Consider the proportion as 0.5. Computation of critical value: 1-α=0.95α=0.05α2=0.0251-α2=0.975…

Q: oward revisions in the health care system. The president wants the estimate to be within 0.02 of the…

A: The  population proportion (p) of people that supports  health care revisions is given as 0.61.  The…

Q: The use of the internet is constantly growing.  How many randomly selected adults must be surveyed…

A: a) The confidence level is 99% Therefore, α = 0.01 and α/2=0.005. The margin of error is .02 Since…

Q: The use of the Internet is constantly growing. How many randomly selected adults must be surveyed to…

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Q: You are doing a research project in political science to determine the proportion of voters in your…

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Q: 40. A survey was conducted to determine the percentage of high school students who planned to go to…

A: It was found that 82% of the high school students planned to go college. The margin of error is 5%…

Q: A survey investigates whether the proportion of 8% for employees who commute by car to work is…

A: Type II error (β) is the probability of fail to reject the null hypothesis when alternative…

Q: A random sample of medical files is used to estimate the proportion p of all people who have blood…

A:

Q: Never Married People The percentage of males  18  years and older who have never married is  30.4…

A: From the provided information, For Men: p1=0.304n1=250x1=73 For Women: p2=0.236n2=200x2=50 The level…

Q: In the example from lecture concerning making community service a requirement, suppose the…

A: Given that  Sample sizes n1 =360 , n2=400 Favorable cases x1=180 , x2=168

Q: Fourty percent of all Americans drink bottled water more than once a week (Natural resources Defense…

A: c) p^=0.4n=210 The expectation and standard deviation are…

Q: A recent Gallup Poll asked 1523 adults if they bought a lottery ticket in the past year. Eight…

A: A recent Gallup Poll asked 1523 adults if they bought a lottery ticket in the past year. Eight…

Q: brand manager for a brand of toothpaste must plan a campaign to increase brand recognition. He wants…

A: It is given that margin of error (E) is 0.05 and the confidence level is 0.98.

Q: The margin of error for a 95% interval estimate of the population mean salary is, a $2,907…

A: First we find mean and standard deviation for given data, So, by using calculator, Mean = 83449.0074…

Q: John Davis, a manager of a supermarket, wants to estimate the proportion of customers who use food…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: a programmer plans to develop a new software system. In planning for the operating system that he…

A: a) The confidence level is 99% Therefore, α = 0.01 and α/2=0.005. The margin of error is 3% =0.03…

Q: How hard is it to reach a businessperson by phone? If p is the proportion of of calls. How many…

A: Solution: Given information: Margin of error = E= 0.02 p= 0.18 population  proportion  q= 1-p=0.82…

Q: (a) What proportion of college graduates answered yes when asked if they had ever used online…

A: The assumed CI for the difference in proportions is,     (p^1-p^2)±(Z * SE)where Standard Error…

Q: Suppose a realtor wants to determine the current percentage of customers who have a family of five…

A: Given that,  = 0.5 1 -  = 0.5 margin of error = E = 0.02 confidence level = 98% Level of…

Q: Has the proportion of Americans that are "20-somethings" decreased? According to the US Census…

A: The random variable X follows normal distribution. We have to test whether the proportion of…

Q: (a) If you have no preliminary estimate for p, how many medical files should you include in a random…

A: 1)a)Givenmargin of error(E)=0.06Confidence level=85%

Q: The manager of Carrefour selected samples of 64 customers and computed the sample average amounts…

A: Given sample size n=64Considering the sample size is large, the distribution of amount spent by the…

Q: Sleep apnea is a condition in which the sufferers stop breathing momentarily while they are asleep.…

A: