A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 2.5% margin of error at a 95% confidence level, what size of sample is needed? When finding the z-value, round it to four decimal places. Hint: Video [+]

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A: To identify the correct answer to the question.

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A: Using excel formula "=NORM.S.INV(1-(0.05/2))", the z-value for 95% confidence level is 1.96.

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A: The probability that a randomly selected 5-year-old male feral cat will live to be 6 years old is…

Q: According to an article, 70% of high school seniors have a driver's license. Suppose we take a…

A: population proportion(p)=70%=0.70sample size(n)=200

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A: We have given following contingency table Purchase likelihood 18-3435-4445-5455+Total More likely…

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A: There are two separate data for ( Men and Women )But categories are same for both groups, There are…

Q: What is the probability of scoring above a z-score of -1.11?

A: Z has follows standard normal distribution with mean zero and standard deviation one.

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A: Mean()=136standard deviation()=1.2

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A: LengthsFrequency160-1621163-16516166-16871169-171108172-17483175-17718178-1803Total300

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A: Note:Hi there! Thank you for posting the question. To avoid plagiarism issues, we have used the…

Q: If P(A | B)= 0.2 and P(B) = 0.7, then O a. P(B | A) = 0.55 O b. P(An B) = 0.50 O c. P(A) = 0.14 O d.…

A: P(A|B)=0.2 and P(B)=0.7

Q: type (X, Y, or Z) and geographic location (A, B, C, or D). X Y Z A 124 130 128 B O 0.4985 O 0.2255…

A: ABCDX124110108114Y130106122112Z128118112116

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A: hypothesis test with = 0.09

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A: S={6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17}F= {10, 11, 12, 13, 14, 15}G ={14, 15, 16, 17}

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A: The total number of births is 93+505+1621+2840+1853+371+119=7402.The number of multiple births…

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Q: Please do not give solution in image format thanku In a regression study, a 95% confidence interval…

A: 95% confidence interval for the coefficient(-3.15, 1.01)

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A: The total number of companies [N(S)] is 1400.

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A: From the given information,Sample size , n = 540Sample proportion , 54% = 0.54 Using formula,

Q: In Exercises 9-20, use the data in the following table, which lists survey results from high school…

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A: μ=193.7,σ=14.4,n=123

Q: A probability experiment. conducted in which the sample space of the experiment is S=…

A: S = {4,5,6,7,8,9,10,11,12,13,14,15}and  E ={7,8,9,10,11,12,13,14}

Q: The following table lists the bivariate distribution of X and Y. y E(X+Y) V(X+Y) 1 1 = X = 2 2 0.1…

A: Given that ,E(X) = 1.5 E(Y) = 1.5V(X) = 0.25V(Y) = 0.25COV(X,Y) = 0.15Using formula,

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Q: The data below shows the square feet of living space and the selling price of 12 residential…

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Q: 1 In the game of roulette, a player can place a $10 bet on the number 2 and have a 38 probability of…

A: We have given the expected value is $-0.53

Q: 2.60. Show that test statistics (2.17) and (2.87) are equivalent. Since (b₁-B₁)/s(b) is distributed…

A: t∗=b1sb1...............(2.17)t∗=r12n−21−r122........(2.87)

Q: Resorts & Spas, a magazine devoted to upscale vacations and accommodations, published its Reader's…

A: Hi! Thank you for posting the question. Since your question has more than three sub-parts, we have…

Q: A probability experiment is conducted in which the sample space of the experiment is S=(5, 6, 7, 8,…

A:

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A: Mean()=523standard deviation()=46