For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. In a random sample of 66 professional actors, it was found that 45 were extroverts. (a)  Let p represent the proportion of all actors who are extroverts. Find a point estimate for p. (Round your answer to four decimal places.)  0.6818 (b)  Find a 95% confidence interval for p. (Round your answers to two decimal places.) lower limit

Q: A 93.32% Cl is given as (2.5, 3.5). From this information, find a 95% confidence interval (yes, this…

A: The provided information is as follows:The 93.32% confidence interval is (2.5,3.5).

Q: Ninety-four percent of students said that cash is their top choice for a graduation gift. If 75…

A: It is given that sample size (n) is 75and the sample proportion value is 0.94.

Q: A poll reported that 67.7% of adults in a certain country believe that organic produce is better for…

A:

Q: Kim wants to determine a 99 percent confidence interval for the true proportion of high school…

A: From the given information, Margin error (E) = 0.03 Assume sample proportion = 0.5   The objective…

Q: recent survey showed that among 725 randomly selected subjects who completed 4 years of college, 139…

A: Given that  n = 725 , Smoke = 139 , Not smoke = 586

Q: Out of a sample of 600 adults aged 18 to 30, 162 still lived with their parents. Based on this,…

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Q: In 2016 the CDC wanted to estimate the proportion of adults who are smokers in the U.S. The…

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Q: A poll reported that only 408 out of a total of 1549 adults in a particular region said they had a…

A: (a) Obtain the 95% confidence interval for the proportion that express a great deal or quite a lot…

Q: In a survey of 2304 ​adults, 746 say they believe in UFOs.   Construct a 95% confidence interval for…

A: Solution: Let X be the number of adults who believe in UFOs and n be the sample number of adults.…

Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…

A: From the provided information, Sample size (n) = 69 From which 36 were extroverts that is x = 36

Q: 95% confidence interval for the true percent of workers in this city who have full health insurance…

A: The question is about confidence interval.Given :Randomly selected no. of workers ( n ) = 1700No. of…

Q: A poll of 1060 adults in a country was conducted by telephone. Of those surveyed, 169 had…

A: The sample size is 1060 and number of success is 169.

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step…

A: The question is about confidence interval.Given :No. of sample of tankers drawn ( n ) = 432No. of…

Q: Suppose you decide that you want to construct a 93% confidence interval. Which one of the following…

A: Given : confidence level, c = 93 %

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A:

Q: Use the following to answer the next two questions. A 2020 poll found that 520 out of 824 randomly…

A:

Q: How do you solve? ref W9Q7.

A: For Women nw=10 α=1-0.90=0.10 Degrees of freedom is obtained as- df=10-1=9 The mean and standard…

Q: You are interested in constructing a 95% confidence interval for the proportion of all caterpillars…

A:

Q: Find ??/2 for the 93% confidence interval. Select one: A. 1.83 B. 1.81 C. 1.80 D. 1.82

A: Solution: Given information: Confidence level = 93% = 0.93 α=1-confidence level α=1-0.93= 0.07…

Q: In a survey of 2325 adults, 711 say they believe in UFOs. Construct a 99% confidence interval for…

A: Suppose, p is the population proportion of all adults, who say that they believe in UFOs.

Q: In a sample of 310 adults, 177 had children. Construct a 87% confidence interval for the true…

A: Find z-critical value:…

Q: A 95% confidence interval for the population proportion is (☐☐ ). (Round to three decimal places as…

A: Let p be the population proportion of the adults who believe in UFOs.Given that,Number ofadults No.…

Q: You are interested in constructing a 99% confidence interval for the proportion of all caterpillars…

A: It is given that sample size (n) is 433and x is 47.

Q: You are interested in constructing a 99% confidence interval for the proportion of all caterpillars…

A: It is been asked to find a 99% confidence interval for the proportion of all caterpillars that…

Q: Suppose that 18% of a random sample of 2307 Miami residents said that they will donate blood in…

A: The sample proportion is given as 0.18. The sample size is given as 2307. The two-tailed z-critical…

Q: . A polling company is trying to estimate the percentage of adults that consider themselves happy. A…

A: Consider z=1.96 and p^=0.5. Thus,

Q: you take a sample in equal 25 of test scores from a population. The sample mean is 38, and the…

A:

Q: A recent survey conducted in a nearby town showed that 791 out of 1,495 people do most their holiday…

A: Here, the sample proportion is =7911495=0.5291 Now, for 90% confidence z=1.645

Q: Your analysis of the raw data indicates that 16 of the 30 students reported driving no more than 20…

A: From the given information, let X be the number of students reported no more than 20 miles per day.…

Q: Construct a 90% confidence interval of the population mean age for the college students in Example…

A: We have to find a...n , x̄, zc and E  b. Find the left and right endpoints of the confidence…

Q: 90% confidence the proportion and caterpillars thất tived to become a butterny is between b. If many…

A: n = 377 p = 42/377 =0.1114

Q: A College Alcohol Study interviewed an SRS of 1000 college students about their drinking habits.…

A: We have given that,  Sample of the size (n) = 1000 and the sample proportion p-hat= 0.5 Then, We…

Q: customers. They find the average time for there oil change is 4521 miles and a standard deviation of…

A:

Q: In one city, 27.8% of the 9000 students surveyed said they eat at the school cafeteria. Find the 95%…

A: To find the 95% confidence interval for the proportion of students who said they eat at the school…

Q: Now you are interested in the percent of dogs that were neutered in your sample. For 40 dogs, 30 of…

A:

Q: Prof. Gersch knows that the score on a standardized test is perfectly normal with unknown mean and a…

A: We have to find  correct answer for given data..