In a random sample of 500 people eating lunch at a cafeteria on various Fridays, it was found that 160 preferred seafood. A 90% confidence interval for the actual proportion of people eating seafood on Fridays (rounded off to two decimals) is: O A. [0.29; 0.35] O B. [0.27; 0.37] O C. [0.28; 0.34] O D. [0.28; 0.36]

Q: It was observed that 30 of the 100 randomly selected students smoked. Find the confidence interval…

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Q: The figure to the right shows the results of a survey in which 1013 adults from Country A, 1001…

A: Given data for country C is        n=1021        P=25%=0.25       Z- value at 95% confidence…

Q: The figure to the right shows the results of a survey in which 1013 adults from Country A, 1001…

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Q: The figure to the right shows the results of a survey in which 1011 adults from Country​ A, 1003…

A: Note- As per our policy we can answer only the first 3 sub-parts of a question. If you want…

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Q: Which of the following is thet-value for a 95% confidence level when the sample size is 20. O a.…

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Q: The figure to the right shows the results of a survey in which 1018 adults from Country A 1015…

A: Given Information: Country Sample size (n) Sample proportion (p^) A 1018 0.37 B 1015 0.19 C…

Q: In a survey of 950 randomly selected individuals, 17% answered yes to the question "Do you think the…

A: Sample size, n = 950Probability = 17% = 0.17 90% confidence level

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A: We have given that,  Favorable cases (X) = 43 and sample size (N) = 156  Then,  We will find the 99%…

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A: The notation r represents the statistic, which is the value of the linear correlation coefficient…

Q: 1. In a recent poll 62 out of 149 randomly chosen students at Allen High School say they plan to buy…

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A: According to the given information, we have In a random sample of 850 consumers. 385 reported that…

Q: Gallup is a company that carries out daily opinion polls on a variety of topics. In a recent daily…

A: The confidence interval can be found by using the formula p±zp(1-p)n

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

Q: A random sample of 560 serviced tables at a restaurant reveals that 20% of them offer tips to the…

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Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: From the provided information, Sample size of Country B (n) = 1023 Sample proportion (p̂) = 0.22…

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A: Given: Sample of car gas mileage (miles per gallon) are: X = 20.2, 21.3, 25.0, 22.5, 23.9, 22.8,…

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A: Given Data : For Sample 1 x̄1 = 2.46 n1= 10 s1= 3.26 For Sample 2…

Q: Wildlife biologists inspect 153 deer taken by hunters and find that 32 of them carry ticks that test…

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Q: A researcher asks 600 people if they received a flu vaccine, and 65% said they did. What is the 95%…

A: From the provided information Sample size (n) = 600 65% said they received a flu vaccine that is…

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A: It is given that out of 89 students, 73 said that Principles of Statistics was the most satisfying.…

Q: In a recent survey of US adults, 35 people were asked the question:   “Do you own a smart phone?”.…

A: Given data,n=35x=29Sample proportion p=xn=2935=0.83z-value at 90% confidence is Zc=1.645

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A: Given that, Sample size n=1000 Sample proportion of adult Seattle residents who did not believe they…

Q: Gallup Organization poll of n= 856 randomly selected American adults in October 2017 found that 60%…

A: Fkk

Q: A survey of 620620 men shoppers found that 1111% of them shop on impulse. What is the 9595%…

A: Given,sample size(n)=620sample proportion(p^)=0.111-p^=1-0.11=0.89α=1-0.95=0.05α2=0.025Z0.025=1.96…

Q: A survey of 800 women shoppers found that 17% of them shop on impulse. What is the 98% confidence…

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Q: 6) An Internet service provider sampled 590 customers and found that 85 of them experienced an…

A: According to the given information, we have Total number of customers = 590 85 of them experienced…

Q: (c) In a random sample of visitors to a famous tourist attraction, 252 of 750 American tourists and…

A: We have given that,  X1 = 252, n1 = 750 and X2 = 312, n2 = 500 Then,  We will find 96% confidence…

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: For the given data The99​%confidence interval for the proportion of adults from Country B who say…

Q: A survey of 800 women shoppers found that 17% of them shop on impulse What is the 98% confidence…

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Q: The figure to the right shows the results of a survey in which 996 adults from Country A, 1006…

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Q: The true proportion of c.c. students in her state, that receive an AD, is contained in that specific…

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A: Given that, X = 1340 N = 2000 98% confidence level

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

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A: The critical value of the confidence level of 98% from standard normal distribution is,

Q: a researcher was interested in comparing the amount of time watching television by women and by men.…

A: Solution: Given information: n1= 14  Sample size of women n2=17  Sample size of men x1= 12.7 hours…

Q: The Universal Music Group is the music industry leader worldwide in sales according to the company…

A: The random variable music sales follow normal distribution. The sample size is 1003. The sample…

Q: The figure to the right shows the results of a survey in which 1003 adults from Country A, 1024…

A: Given information For country A p-hat = 0.35 n = 1003

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Q: In a study by Sallie Mae and Gallup, 323 of the 569respondents said that they paid for their…

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Q: The figure to the right shows the results of a survey in which 1013 adults from Country A, 1001…

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Q: 1. A survey of 800 women shoppers found that 17% of them shop on impulse. What is the 1. confidence…

A: We have to find confidence interval for the true proportion of women shoppers who shop on impulse.

Q: In terms of z scores, a 99% confidence interval consists of which of the following ranges? 1. ±1 z…

A: We know, If Z~N(0,1) Then, P(a < Z < b) = P( Z < b ) - P( Z < a) Also,  P( - a < Z…

Q: The figure to the right shows the results of a survey in which 1014 adults from Country A, 1012…

A: Hello there! There are more than three subparts in the question. According to our policies can…

Q: Of 500 randomly selected college students, 200 use a particular brand of mobile phone. Assuming that…

A: Given : x = 200 n = 500 p^=xn=200500=0.4The formula for confidence interval is :p^±zcp^(1-p^)n