Suppose someone wanted an 75%-confidence interval. What value of z should they use? Choose the answer that is closest.   a. 0.95 b. 1.5 c. 1.15 d. 2

Q: .Taggart Vanetten ran the Marathon in 151 minutes what is his percentile ?what does it mean in the…

A: Given, Data is provided in this table: Sum of minutes in data: 7196 Total no. of values : 40

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A: a) The probability that the car is a compact car is, Pcompact car=number of compact carsTotal cars…

Q: iii) Suppose that P(A) = 0.46 and P(B) = 0.75. Which of the following is the probability of A…

A: It is given that P(A) = 0.46, P(B) = 0.75 NOTE : Since you have asked multiple questions, we will…

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A: Given data  X = 186 N = 1100 Alpha = 0.05 P= 14.8%.  = 0.148

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A: Given that  Total students=n=80 Number of pass students=X=28+32=60

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A: HERE FROM GIVEN INFORMATION , significance level  = 5%

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A: The results of a hypothesis test is converted into APA style before publishing it in the journal.

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A: From the above data  We can tell that the mean is significantly different The correct option is  Yes

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A: Why can't you just use the sample mean to estimate the population mean without including a margin of…

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A: From the provided information, The data values are as follow: -2, 5, 7, 2, 0, 3

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Q: Construct a 90% confidence interval of the population proportion using the given information. x =…

A: Solution-:  Given:  n=300, X=60, c=0.90 We construct the 90% C.I. of the population proportion The…

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A: a)   Consider that μ as the population mean number of miles driven annually under the new contracts.

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Q: (C) Calculate Var 2 if 7= k=0,1 2.

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Q: 1. If X,, X2, .X, forms a random sample of size n from a population with pdf f(x; 8,8) = 0 for x>0…

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A: The standard deviation of the sample mean is better described by

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A: Givenpopulation proportion(p)=0.60sample size(n)=100

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Q: Find the confidence level related to the critical value z. Za/2=2.2 O 97.2% O 2.8% O 89% O 98.8%

A: We have given that,  Critical value zα/2 = 2.2 Then,  We will find confidence level =  ?

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Q: Which types of car were driven by more than 623 respondents in the survey?

A: Here use proportion from given pie chart And calculate no of people drive that type of car