A poll reported that 63​% of adults were satisfied with the job the major airlines were doing. Suppose 20 adults are selected at random and the number who are satisfied is recorded. Would it be unusual to find more than 17 who are satisfied with the job the major airlines were​ doing?   The result is/is not​ unusual, because P(x>17​) = _____ under the assumption that the proportion of adults that are satisfied with the airlines is 63​%. Thus, in 100 random samples of size 20​, this result is expected in about ______ of the random samples. ​(Type integers or decimals. Round to four decimal places as​ needed.)

Q: Assume that 40% of students at SCC receive A or B’s, 35% receive C’s, and 25% receive  D or F’s. A…

A: The following information has been provided: Categories Observed Value A 100 B 130 C 70…

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A: Expected value (E) =Total frequency 5

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A: For z = 1.980 and for one tailed test,  the corresponding p value is 0.024 which can be obtained by…

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A: Given, n=10,p=0.07 P(X=x) = (nCx) px (1-p)n-x

Q: Starting at a fixed time, each car entering an intersection is observed to see whether it turns left…

A:

Q: Benford's Law claims that numbers chosen from very large data files tend to have "1" as the first…

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A: It is given that the sample size (n) is 6 and the hypothesized test is left- tailed. The level of…

Q: 59% of all the towns residents own a dog and 69% own a cat. Of the dog owners 43% also own a cat. If…

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Q: A real estate agent working in a large city believes that, for three-bedroom houses, the selling…

A: From the given information,       β1( slope)=-2.158,S.E( β1) =0.149n=20α=0.05

Q: A researcher would like to determine whether there is any relationship between students’ grades and…

A: From the provided information, Sample size (n) = 100 Sample mean (M) = 3.25 Population standard…

Q: The owner of a computer company claims that the proportion of defective computer chips produced at…

A: Given X1=12 X2=10 n1=80 n2=90

Q: Q.No.2. a) The specific laboratory are being used to perform chemical analysis. Samples of the same…

A: a) The frequency table is as follows-

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Q: CBS news reported that 4% of adult Americans have a food allergy consider selecting 10 adult…

A:

Q: What is the​ p-value?

A: Here sample size is too large so use z test for proportion

Q: Please answer number 13.

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A: Given that

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A: Given: n = 20 Slope = -2.158 Standard error for the slope  of regression line = 0.149 Significance…

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A:

Q: Suppose P(A) = P(B) = 0.25 and P(AUB) = 0.45. What is P(ANB)?

A: The provided information is   P(A)=0.25 P(B)=0.25…

Q: Of those women who are diagnosed to have earlystage breast cancer, one-third eventually die of the…

A: We have to conduct right tailed test for proportion.

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A: Given that 64% of American teenagers want to be eventually be self-employed and a simple random…

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A: X~Poisson distribution. Mean=29

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A: Note:- Since you have posted a question with multiple subparts we will provide solutions only to the…

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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.