In a recent​ poll, 45​% of survey respondents said​ that, if they only had one​ child, they would prefer the child to be a boy. Suppose you conducted a survey of 130 randomly selected students on your campus and find that 72of them would prefer a boy.   ​(a) Use the normal approximation to the binomial to approximate the probability​ that, in a random sample of 130 ​students, at least 72would prefer a​ boy, assuming the true percentage is 45​%. ​(b) Does this result contradict the​ poll? Explain.

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A: Solution: From the given information, the probability of a cube processed by a machine has side…

Q: Suppose the probability of someone speaking English in Germany is 45 %. Suppose we are to randomly…

A:

Q: According to Nielsen Media Research, 30% of televisions are tuned to NFL Monday Night Football when…

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Q: Suppose there is a 25.4% probability that a randomly selected person aged 30 years or older is a…

A:

Q: Suppose that 44% of US adults favor more government spending for Covid-19 relief.  What is the…

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Q: according to the U.S Department of Transportation, 5.8% of employees in the city of Portland,…

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Q: A researcher wants to test the claim of an online article that 78% of Americans eat healthy each…

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Q: Suppose there is a 11.7% probability that a randomly selected person aged 20 years or older is a…

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Q: A college student is conducting a survey to see if students prefer cats or dogs. They survey 100…

A: A discrete random variable X is said to follow the binomial distribution if its p.m.f is given by:

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Q: Suppose that five out of 20 liver transplants done at a hospital will fail within a year. Consider a…

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A: Given  A survey is taken of 35 randomly selected college students asking them, "Do you plan to…

Q: A public survey reported that 5% of the people now in the community are afraid of walking alone in…

A:

Q: A survey is taken of 90 randomly selected Americans asking them, "Do you think congress should vote…

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Q: Suppose there is a 10.1% probability that a randomly selected person aged 35 years or older is a…

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Q: Suppose that four out of 20 liver transplants done at a hospital will fail within a year. Consider a…

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Q: Show at least one computation using Welch’s T Test and at least one computation using the 2-Sample T…

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Q: The recent survey conducted in a certain village suggests that 41.26% of all residents are…

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Q: Suppose that on a certain messaging service, 4.63% of all messages fail to send. Thus, in a random…

A:

Q: Suppose there is a 11.2% probability that a randomly selected person aged 35 years or older is a…

A: Given Information: There is 11.2% probability that a randomly selected person aged 35 years or older…

Q: A recent study found that 63% of all tax returns have no errors. Assuming this is true, find the…

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Q: Suppose there is a 24.6% probability that a randomly selected person aged 40 years or older is a…

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Q: A team’s wins and losses are analyzed as a binomial experiment with p as the probability of success…

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Q: According to a recent poll, about 40% of Americans believe in ghosts.  Assuming this percentage is…

A: As per our guidelines we are suppose to answer only three subparts kindlypost the remaining subparts…

Q: A random sample of 450 adult is taken from a population of 15000. It is believed that 82% of the…

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Q: Suppose 82% of all students at a large university own a computer. If 6 students are selected…

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Q: A certain test contains 10 multiple choice problems. For five of the problems there are four…

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Q: Two cards are drawn without replacement from a standard deck of 52 playing cards. What is the…

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Q: Is there a formula to calculate this problem?: a financial firm is performing an assessment test…

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Q: A die has been "loaded" so that the probability of rolling any even number is and the probability of…

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Q: In 2005, 0.74 proportion of all airline flights were on-time. If we choose a simple random sample of…

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Q: A survey is taken of 35 randomly selected college students asking them, "Do you plan to transfer to…

A: Yes this would be given as a binomial distribution assuming that the probability that a student…

Q: Suppose that a random sample of 20 computer owners is selected and that 14 have a firewall…

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Q: It is surprising (but true) that if 23 people are in the same room, there is about a 50% chance that…

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Q: omly selected person aged 20 years or older is male and jogs? Would it be unusual to randomly sel r…

A: Given P(J)  = 26.6% =0.266 P(M|J) = 12.4% =0.124

Q: A poll is given, showing 90% are in favor of a new building project, if 6 people are chosen at…

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Q: In a recent​ poll, the Gallup Organization found that 45​% of adult Americans believe that the…

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Q: Suppose that  11% of people are left handed. If  8 people are selected at random, use the binomial…

A: Given Data Probability of success,p = 0.11 Probability of failure,q=(1- 0.11 )= 0.89…

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.