In a four-year psychedelic-mushroom experiment, 93 of the 300 subjects reported experiencing “strong or extreme fear” after using psychedelic mushrooms. (a) Find a point estimate for the percentage of all people who experience “strong or extreme fear” after using psychedelic mushrooms. (b) Find the 95% margin of error for the estimate in (a). (c) Make a 95% confidence interval for the percentage of all people who experience “strong or extreme fear” after using psychedelic mushrooms. Interpret the interval.

Q: what would be the 90% confidence interval of the true proportion of young adults who have received…

A: Given that sample size is n = 190 And the sample proportion is 70% = 0.7 At 90% confidence level,…

Q: 5.From a sample of 1,000 college students, 28% watch the Super Bowl game each year. Find the margin…

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Q: In a survey of 2344 ​adults, 715 say they believe in

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Q: A May 2000 Gallup poll found that 38% of a random sample of 1012 adults in the United States said…

A: (a)   Obtain the 96% confidence interval to estimate the true proportion of all U. S. adults who…

Q: Suppose in a recent poll of 1250 randomly selected Californians who took vacations, 132 of them…

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Q: Use the formula for a Confidence Interval for Two Proportions to calculate a 95% confidence interval…

A: Confidence interval: The (1-α)100 % confidence interval for proportion p1 – p2 is given by,

Q: In a random sample of 500 people eating lunch at a cafeteria on various Fridays, it was found that…

A: Given that Sample size n= 500  Favorable cases x=160 Sample proportion p^=x/n

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A:

Q: In a recent poll, 560 people were asked if they liked dogs, and 22% said they did. Find the margin…

A: For 95% confidence intervalα=1-CI=1-0.95=0.05So, zα2=z0.052=z0.025=1.96

Q: . If she wants to make a 95% confidence interval for the mean with the margin of error of 5 cm, at…

A: here from given information , σ = 17 cm MOE = 5cm here Z-critical for 95 % confidence level = 1.96…

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

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Q: For a group of 45 students taking a PSDTF test, the mean heart rate was 96 beats per minute, and the…

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Q: kendall wants to estimate the percentage of vegetarians who are also vegan. She surveys 150…

A: The margin of error for the 95% confidence interval of population proportion is given as follows :…

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

A: Given information- We have given that 93 of the 300 subjects reported experiencing “strong or…

Q: In a recent polI, 200 people were asked if they liked dogs, and 15% said they did. Find the margin…

A: From the provided information, Sample size (n) = 200 15% people said they like dogs that is p̂ =…

Q: in a recent poll, 220 people were asked if they liked dogs, and 36% said they did . find the margin…

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Q: search for the Ford Motor Company, you find that a random sample of 800 households includes 721 in…

A: At 98% confidence level, the z value is 2.33 which can be obtained by using the standard normal…

Q: In a recent poll, 260 people were asked if they liked dogs, and 67% said they did. Find the margin…

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Q: What proportion of college students earn their undergraduate degrees in four years? A college…

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

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Q: Beth wants to determine a 95 percent confidence interval for the true proportion p of high school…

A: Here we need to find the required sample size inorder to construct a 95% confidence interval for the…

Q: In a previous election, the confidence interval for the proportion of likely voters who would vote…

A: given;confidence interval for the proportion;(0.4401, 0.5199)i.e. (p^-E, p^+E)where  p^ : point…

Q: In simple random sample of 150 of workers, 22 said their workplace environment is toxic. Construct a…

A: We have to find out given confidence interval..

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Q: An investigator computes a 95% confidence interval for a population mean on the basis of a sample of…

A: To find half of width, We need to calculate 4 times the sample Size.

Q: In a two-sided confidence interval involving two groups, when the signs of its lower and upper…

A: Confidence interval is an inference process which is used to estimate the population parameters…

Q: Alma is estimating the proportion of students in her school district who, in the past month, read at…

A: From the given information, n=50 and x = 32.

Q: Suppose you constructed a 90% confidence interval for the true average GPA of California community…

A: Solution: 1. From the given information, 90% and 80% confidence interval for the true average GPA of…

Q: An online seller of Yema Cake, surveyed several customers. Fifty-two percent (52%) of the customers…

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Q: Identify the y-score for a 95% confidence interval if the sample size is 15.

A: The confidence level is 0.95.

Q: In the previous example, you learned that the 95% confidence interval for the true proportion of all…

A: Calculate the point estimate and margin of error used to create this confidence interval.

Q: How effective is the flu shot?  In a control study, 94 of the 859 participants who received the…

A: Given ,  x1==94 , n1=859x2==46 , n2=923p1=x1n1=94859=0.1094p2=x2n2=46923=0.0498 α=0.05

Q: In a study of the relationship between alcohol use and bicycling fatalities, the researcher…

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Q: The pizza Shop wanted to determine what proportion of its customers ordered an only cheese pizza.…

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Q: Beth wants to determine a 90 percent confidence interval for the true proportion p of high school…

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Q: In a preelection poll, a pollster finds that 442 out of 650 people polled favor Smith. Construct the…

A: We need to construct the 95% confidence interval for the population proportion. We have given the…

Q: In a recent poll, 110 people were asked if they liked dogs, and 40% said they did. Find the margin…

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Q: Suppose you want to construct an 80% confidence interval for the proportion of businesses that…

A: Given:Margin of Error (E)=3.5%=0.035   For Confidence level 80%, the significance level (α) is…

Q: The Pizza Shop wanted to determine what of its customers ordered an only cheese pizza. Out of 90…

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Q: A recent study of 750 internet users in Europe found that 35% of internet users were women. What is…

A: It is given that the study of 750 internet users in Europe found that 35% of internet users were…

Q: Identify the at-score for a 99% confidence interval if the sample size is 70.

A: givensample size(n)=70α=1-0.99=0.01

Q: What would be the standard error in computing a confidence interval for the difference of…

A: It is given that For population 1, sample size n1 = 49, sample proportion = 0.682 For population 2,…

Q: Flagstaff found 470 NAU students who drink coffee daily. Find a 95% confidence interval for the true…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.