60% of U.S. households have a personal computer.  In a random sample of 200 households, what is the probability that at least 115 have a PC?  ( hint: use the normal approximation to the binomial distribution)

Q: Manufactured fiber optic cables on the average have 1.5 flaws per meter. Assuming that the number of…

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Q: use a normal approximation to find the probability of the indicated number of voters. In the case,…

A:

Q: In target, approximately 73 people out of 100 will buy something that they don’t need. Assuming that…

A: a. The random variable X is defined as the number of people buying something that they don't need…

Q: 78​% of U.S. adults think that political correctness is a problem in America today. You randomly…

A:

Q: About 12.5% of restaurant bills are incorrect. If 200 bills are selected at random, find the…

A: It is given that 12.5% of restaurant bills contain error. So, the proportion of bills contain error…

Q: 79​% of U.S. adults think that political correctness is a problem in America today. You randomly…

A: Obtain the value of the mean.   The value of the mean is obtained below:   Let X denotes the number…

Q: hich distribution is most strongly right-skewed?   Multiple Choice   Binomial with n = 50, π =…

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Q: Ten percent of people in the US are left handed. 100 people are randomly selected from the…

A: The random variable left handers follows binomial distribution. X ~ B (n, p) => X ~ B (100,…

Q: A survey conducted for the Northwestern National Life Insurance Company revealed that 70% of…

A: It is given that n = 20 and p = 0.70.

Q: Consider a uniform distribution from 1 to 8.  What is the probability that the random variable has a…

A: From the provided information, Let X be a random variable which follows uniform distribution. X ~U…

Q: A consumer organization inspecting new TV sets found that 23% have one appearance defect. Suppose…

A: Given  Probability of 1 tv set getting defective appearance is 0.23.we need to determine the…

Q: A newspaper survey found that 65% of readers found online tutorials useful. If a random sample of 9…

A: We have given that a Binomial distribution with parameters p=65% = 0.65 , q=1-p = 0.35 and sample…

Q: Pediatric asthma survey, n = 50. Suppose that asthma affects 1 in 20 children in a population. You…

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Q: The population mean annual salary for an electrician is $46,700.A random sample of 42 electricians…

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Q: Use a normal approximation to find the probability of the indicated number of voters. In this​ case,…

A: The given information is that the sample of 144 eligible voters’ ages 18-24 years are randomly…

Q: Use the normal approximation to the binomial distribution, unless otherwise indicated. 1. It is…

A: Here Given   It is estimated that 62% of television viewers “channel surf” during commercials So…

Q: According to a Pew Research study in 2006, 75% of adults prefer to watch movies at home over going…

A: Given,n=200p=0.75

Q: According to voting records, 61% of eligible voters voted. In a sample of 100, 66 said that they…

A:

Q: 78% of U.S. adults think that political correctness is a problem in America today. You randomly…

A: given data P(thinks that political correctness is problem in america today) = p = 0.76sample size…

Q: In a city, 70% of the people prefer Candidate A. Suppose 30 people from this city were sampled.…

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Q: A multiple choice quiz has 80 questions, each with 4 possible answers, of which only one is correct.…

A: Given,n=80p=14=0.25mean(μ)=npμ=80×0.25=20standard deviation(σ)=np(1-p)σ=80×0.25(1-0.25)σ=3.87298

Q: represents the number of U.S. adults who think that political correctness is a problem in America…

A: Given that  Number of trials n=6 Success of probability p=0.79 , q=1-p=0.21   X~binomial (n,p)…

Q: According to a candy​ company, packages of a certain candy contain ​20% orange candies. Find the…

A: Given p=20%=0.20 n=200

Q: Use a normal approximation to find the probability of the indicated number of voters. In this case…

A: Given that, Proportion of voters who actually voted, p= 0.22. Sample size of voters, n= 110.

Q: An important part of the customer service responsibilities of a cable company relates to the speed…

A: Given thatp = 0.87

Q: The average local cell phone call length was reported to be 2.27 minutes. A random sample of 20…

A:

Q: 78% of U.S. adults think that political correctness is a problem in America today. You randomly…

A: Answer 78% of us adult think that political correctness is a problem in America today.You randomly…

Q: In a given one of Mendel's hybrid experiments, the probability of offspring peas having a green pod…

A: Here, probability of offspring peas having a green pod is 3/4 or .75. Hence, p = 0.75. Number of…

Q: A drug tester claims that a drug cures a rare skin disease 72​% of the time. The claim is checked by…

A: Given,n=100p=0.72mean(μ)=np=100×0.72=72standard deviation(σ)=npqσ=100×0.72×(1-0.72)=4.48999

Q: Past records indicate that the probability of online retail orders that turn out to be fraudulent is…

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Q: Consider the probability that at most 85 out of 136 DVDs will malfunction. Assume the probability…

A: Determine whether the normal curve can be used as an approximation to the binomial probability or…

Q: Suppose z is a standard normal random variable. Find the z-value given probabilities: a. z-value…

A: given data standard normal distributiopnZ~N(0,1)

Q: Use a normal approximation to find the probability of the indicated number of voters. In this​ case,…

A: Answer: From the given data, Selected sample size (n) = 169 P(voted) = p = 22% = 0.22 Here n is…

Q: Suppose you and two friends decided to go to Burgers-and-More, which last year filled approximately…

A: The probability of filling the order correctly is .The sample size is .

Q: A die is tossed 120 times. Find the probability that the face 4 will turn up 21 times or less,…

A: Its normal approximation to binomial distribution

Q: d. What is the probability that two or more online retail orders will turn out to be fraudulent?

A: Let p = probability of being fraudulent. Given that p = 0.08 Let X denote the number of fraudulent…

Q: Use a normal approximation to find the probability of the indicated number of voters. In this​ case,…

A: Given, n = 114 p = 22% = 0.22

Q: A recent study had shown that 28% of 18-34 year olds check their Facebook/Instagram feeds before…

A: A) Suppose a random variable X, defines that the number of 18-34 year old who checked their social…

Q: Past records indicate that the probability of online retall orders that tum that turn out to be…

A: Given that  n=23 , p=0.07 , q=1-p=1-0.07=0.93 X~Binomial(n=23,p=0.07) X=Number of online retail…

Q: A poll found that 35% of adults do not work at all while on summer vacation. In a random sample of 7…

A: Given,sample size(n)=7 p=0.35and q=1-0.35=0.65Let X represent the number who do not work…

Q: Decide whether you can use the normal distribution to approximate the binomial distribution. If you…

A: (a)   Obtain the probability that the number of people who say auto racing is their favorite sport…

Q: 62% of adults in a population have an HDTV in their home. You randomly select 45 adults and ask them…

A: The population proportion of adults on the population with an HDTV in the home,…

Q: According to a study 55% of all males between the ages of 18 and 24, live at home. (unmarried…

A: Suppose the variable x defines the number of males between the ages of 18 and 24, who live at home.

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.