For this problem, carry at least four digits after the decimal in your calculations. Answers may vary slightly due to rounding. A random sample of medical files is used to estimate the proportion p of all people who have blood type B. (a) If you have no preliminary estimate for p, how many medical files should you include in a random sample in order to be 85% sure that the point estimate p̂ will be within a distance of 0.04 from p? (Round your answer up to the nearest whole number.) medical files (b) Answer part (a) if you use the preliminary estimate that about 13 out of 90 people have blood type B. medical files

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A: Given that there are 100 people. Therefore, the table becomes,    0-3 km distance 3-6 km distance…

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A: Solution: From the given information, confidence level is 0.999 and E=0.05.

Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…

A:

Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…

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Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…

A: From the given information, Confidence level =0.80 Margin of error =0.04

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A: The z-score is given by 4.

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Q: Suppose that the researchers wanted to estimate the proportion of patients under 50 years old who…

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A:

Q: A federal report indicated that 13% of children under age 6 live in poverty in Minnesota, an…

A: compute sample size ( n ) = n=(Z/E)^2*p*(1-p)

Q: a. Assume that nothing is known about the percentage to be estimated.

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Q: b. If the study had found that 51 of the 80 students were working then: ZSTAT =| (Round your answer…

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A:

Q: Use Table B to answer the following question. 1. What proportion lies to the left of z=2.64?

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Q: S For n= 15, the margin of error for an estimate at an alpha level of 2% is +2.249 15

A:

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A: Hey there! Thank you for posting the question. Since there are multiple questions posted, we will…

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Q: If we add a constant (say, d) for all data values, how this will affect the geometric mean

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Q: For this problem, carry at least four digits after the decimal in your calculations. Answers may…

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Q: What is the point estimate of the proportion of people in the population who are over 6 feet tall?

A: Given that Sample size n = 50 Number of persons who are over 6 feet, X = 12

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Q: Is IQ related to GPA?If a student’s IQ is 117, what GPA would you predict?How much of the variation…

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Q: For a sample of 12 offenders convicted of weapons violations, the length of prison sentence in…

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Q: Suppose that out of 10,351 convicts who escaped from U.S. prisons, only 7767 were recaptured. Let p…

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Q: For a population with μ =100 and σ = 20, what is the X value corresponding to z = -0.50?

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Q: When estimating the population proportion, how large a sample is needed to be 95% confident that the…

A: Here  sample proportion = 42/120= 0.35

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Q: Solve the following problems.a. After 6 points have been added to every score in a sample, the mean…

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Q: The brand manager for a brand of toothpaste must plan a campaign designed to increase brand…

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Q: With no preliminary estimate of the proportion known, how many young adults would you survey to…

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A: Given, sample size (n) = 580 x  = 370 a)  Point estimate for p =  sample proportion (p^)…

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Q: A recent study indicated that 24% of the 137 women over age 55 in the study were widows. Round up…

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.