Based on historical data, your manager believes that 31% of the company's orders come from first-time customers. A random sample of 182 orders will be used to estimate the proportion of first-time-customers. What is the probability that the sample proportion is between 0.26 and 0.37? Note: You should carefully round any z-values you calculate to 4 decimal places to match wamap's approach and calculations. Answer = (Enter your answer as a number accurate to 4 decimal places.)

Q: According to a 2009 Reader's Digest article, people throw away about 10% of what they buy at the…

A:

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: From the provided information, Mean (µ) = 176000 Standard deviation (σ) = 31000 X~N (176000, 31000)…

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A: given  α=0.05β=0.025∆=550-525=25σ=80

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Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: Givenmean annual salary = $187,000standard deviation = $42,000sample size = 16 1.A single graduate…

Q: On a highway, the Average Waiting time for a cop for stopping a car is 10 min. The waiting time T is…

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Q: According to a 2009 Reader's Digest article, people throw away about 11% of what they buy at the…

A: Given p =0.11 and n = 82 Test statistic for population proportion is given by…

Q: A pharmaceutical company receives large shipments of ibuprofen tablets and uses this acceptance…

A: Given:  The sample number of tablets that are tested is n=31. The probability of a defective tablet…

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A:

Q: What is the standard error of the sample proportion who are​concerned?   b. What is the…

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A:

Q: In a survey of MBA students, 70% said that they expect to be promoted within a month after receiving…

A: Given, sample size , n = 15 probability(p) = 0.70=0.7 q=1-p = 1-0.7 = 0.3 P(X=r) = nr×pr×qn-r

Q: From past records, a department store finds that 70% of the people who enter the store will make a…

A:

Q: Suppose you are an environmental researcher for an organization. As part of your research, you…

A: Givensample size(n)=43Mean(μ)=381standard deviation(σ)=31

Q: While Tom Brady played until the age of 44 in the NFL, it has been documented that NFL players’…

A: Given: μ=33σ=2   Note: According to the guidelines, only 1st three subparts are solved.

Q: take a simple random sample of 44 graduates. Round all answers to four decimal places if necessary.…

A: We have given that Business Weekly conducted a survey of graduates from 30 top MBA programs. On the…

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

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Q: According to a 2009 Reader's Digest article, people throw away approximately 11% of what they buy at…

A: Given that the population proportion is 11% and the value of n is 128. That is, p=0.11 and n=128

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Q: Based on historical data, your manager believes that 26% of the company's orders come from…

A:

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: Given information Number of graduates(n) = 10 Mean (µ) = 139,000 Standard deviation (σ) = 42000

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Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

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A:

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A: Given data, n=400 p=110q=1-p=910 P(25<X<38)=?

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A:

Q: At DMV, amount of time spent to receive service after arriving follows an exponential distribution…

A: Note: As per guidelines, solution to only 3 subparts has been given. Given information, Amount of…

Q: According to an almanac, 80% of adult smokers started smoking before turning 18 years old. (a)…

A:

Q: The average defect rate on a 2010 Volkswagen vehicle was reported to be 1.39 defects per vehicle.…

A: Given Suppose that we inspect 100 Volkswagen vehicles at random.

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A: We have given n = 55 σ = 1.90 µ = 2.25

Q: (b) Suppose tire pressure is a normally distributed random variable with a standard deviation equal…

A: Solution

Q: A pharmaceutical company receives large shipments of ibuprofen tablets and uses this acceptance…

A: It is given that X ~B(22,0.06).The PMF of binomial distribution is given by,

Q: An employee survey conducted by a company two years ago found that 51% of its employees were…

A:

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: 1)Givenmean annual salary μ=$190,000standard deviation σ=$34,000 The sample size n=15 Here X is…

Q: Business Weekly conducted a survey of graduates from 30 top MBA programs. On the basis of the…

A: From the provided information, Mean (µ) = $138,000 Standard deviation (σ) = $44,000 Let X be a…

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.