In a restaurant, the proportion of people who order coffee with their dinner is .8. A simple random sample of 144 patrons of the restaurant is taken. a. What are the expected value, standard deviation, and shape of the sampling distribution of ? b. What is the probability that the proportion of people who will order coffee with their meal is between 0.85 and 0.9? c.What is the probability that the proportion of people who will order coffee with their meal is at least .825?

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A: Given,sample size(n)=45mean(μ)=$165standard deviation(σ)=$29

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Q: Fill in the blank with an appropriate word or phrase. A subset of a population used by statisticians…

A: We want fill , fill in the blank

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A: We have given that  Mean = 22 Standard deviation = 2 Sample size = 24

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A:

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A: Solution: Note: Hello! As you have posted more than 3 sub parts, we are answering the first 3…

Q: Refer to the accompanying table, which describes the number of adults in groups of five who reported…

A:

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A: As per our guidelines we are supposed to answer only one question per post Given that, Mean (u) = 11…

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A:

Q: At a supermarket, the mean waiting time to get to the checkout counter is 5 minutes and the standard…

A:

Q: McPhilly is conducting a study on the amount of money a customer spends on each visit to the…

A: Note:  Since we only answer up to 3 sub-parts, we'll answer the first 3. Please resubmit the…

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A:

Q: Suppose the weight of all boxes of cereal in a home with children is normally distributed with a…

A: Given that a) Mean = 55, Standard deviation = 9.32, sample size = 8 b) Proportion p = 0.45, sample…

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A: The variable which is measured here is the opinion regarding prochoice (attitude) on a likert scale,…

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A: Given that mean=65.4,s.d=2.9

Q: Suppose that the efficacy of a certain drug is 0.48. That is, the drug is effective for 48% of the…

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A: 12 %  p = 12/100 = 0.12  q = 1 -p = 1-0.12 = 0.88  n = 133  (A) :  np = 133*0.12 = 15.96  nq =…

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A: here given , family have 6 children  p = probability of girl child  =  0.5

Q: A rainstorm in Portland, Oregon, wipes out the electricity in 5% of the households in the city.…

A: a. Consider that p is population proportion of households with no electricity.

Q: IV. The table below shows the number of students who visit the library per day. X 30 45 52 55 60 16.…

A:

Q: Hila City typically has rain on about 16% of days in February. a. What is the probability that it…

A: Given,p=0.16q=1-0.16=0.84no.of days in the month of February(n)=28Let X= no.of days will rain in the…

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A: Here, Chebyshev's inequality is applicable as we don't have any information about the distribution

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A: From the provided information, Two dice with 8 faces are rolled. Total outcomes = 8 × 8 = 64

Q: A soft drink machine outputs a mean of 29 ounces per cup. The machine's output is normally…

A: given data normal distributionμ = 29 ouncesσ = 4 ouncesx = weight of cupP(25<x<31) = ?

Q: The Wall Street Journal reported that 33% of taxpayers with adjusted gross incomes between $30,000…

A: given  μ=16541σ =2097

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Q: deviation 4. About 10% of people in the United States do not wear a seat belt. Suppose we plan to…

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Q: a. The standard deviation of 25 scores is 10, the mean is 29, the median is 24 and the mode is 23.…

A: Our aim is to find the coefficient of skewness. The formula for Coefficient of skewness is ,…