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 0.07 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 14 out of 90 people have blood type B. ______   medical files

Q: I want to compare the percentage of people who have a college degree in California (population about…

A: (a) The researcher wants to compare the percentage of people who have a college degree in California…

Q: A random sample of medical files is used to estimate the proportion p of all people who have blood…

A: we have to find sample size required for margin of error.

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

A: Given : A random sample of 5454 physicians in Colorado showed that 3359 provided at least some…

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

A:

Q: a. Assume that nothing is known about the percentage to be estimated. (Round up to the nearest…

A: a) If nothing is known about percentage to be estimated,  We will have a conservative estimate for…

Q: A recent study indicated that 20% of 133 women over age 55 in the study were widows.  a. How large a…

A:

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

Q: A ponderosa pine forest in Colorado has a pine beetle infestation.  The beetles bore into a tree and…

A: Solution: 1. From the given information, confidence level is 0.90 and E=0.06.

Q: (a) If you have no preliminary estimate for p, how many business phone calls should you include in a…

A: (a) Minimum sample size for CI level = 80% Margin of error given, E = 0.04 Note: Margin of error =…

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…

A: a.Given no preliminary sample is taken to estimate proportion of small businesses that declared…

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

A: Solution: a. From the given information, confidence level is 0.99 and E=0.08. Since the proportion…

Q: How hard is it to reach a businessperson by phone? Let p be the proportion of calls to…

A: Solution: From the given information, confidence level is 0.80 and E=0.04.

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…

A: Given Information :  The National Council of Small Businesses is interested in the proportion of…

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

A: It is given that:

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

A:

Q: A researcher wishes to estimate the proportion of corporate executives whose annual salary is over…

A:

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

A: The provided information are: Confidence level = 85% = 0.85 Margin of error (E) = 0.04 (a) From the…

Q: They want to test if the true proportion of working markers from the new machine is greater than…

A: Answer: Given that the Company bought a new machine that makes makers. In a random sample of 250…

Q: When designing a study to determine this population proportion, what is the minimum number of…

A: Solution: From the given information, confidence level is 0.95 and E=0.02.

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

A: We have to find sample size required.

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

A: A. It is given that, 362 of the 596 had Santa Fe Black-on white potsherds at the excavation site.…

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

A: It is given that Margin of error E = 0.06 Level of confidence = 0.95 The critical value of Z at 95%…

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

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

Q: a. What percentage of adult men can fit through the door without bending?

A: Let , X be the height of men. Here , X→N(μ=67.1 , σ=3.6) Since , the door height is 56.2 in. Our aim…

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

A: Given data How hard is it to reach a business person by phone? and given  let p be the proportion of…

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

A: From the provided information, Margin of error (E) = 0.04 Confidence level = 85%

Q: A researcher wishes to estimate the proportion of adult males who are less than 5 feet 5 inches…

A: It is given that margin of error (E) is 0.04 and the confidence level is 0.90.

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

A:

Q: The manager of an orchard expects about 82 percent of her apples to exceed the weight requirements…

A:

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

A: Given,n=596x=369

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…

A:

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

A:

Q: The Humane Society is interested in finding out how many households in America have at least one…

A: The provided information are: Confidence level = 95% = 0.95 Margin of error (E) = 4% =0.04 From the…

Q: How large a sample must she select if she desires to be 98% confident that the true mean is within 4…

A: HERE GIVEN , population standard deviation  = 6 ounces  confidence level = 98%  MOE  = 4

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

A: a.   Formula for sample size is,

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

A:

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

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

A: Given Information: Sample size n=5280 Number of successes x=1620

Q: The head of a computer science department is interested in estimating the proportion of students…

A: Solution: From the given information, confidence level is 0.95, p=0.35 and E=0.10.

Q: To two decimal places, what is the mean of these scores: 10, 15, 17, 17, 2 O 14.50

A: It is an important part of statistics. It is widely used.

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

A: It is given that margin of error (E) is 0.10 and the confidence level is 0.99.

Q: A random sample of medical files is used to estimate the proportion p of all people who have blood…

A: Given data p = 0.5 1-p = 1-0.5          = 0.5 Margin of error E = 0.07 At 99% confidence level the z…

Q: A study wants to look at what % of the population is tall. If they want to estimate the percentage…

A:

Q: Solve the problem. Round the point estiamte to the nearest throusandth.  6) Find the point estimate…

A: Let X be the people had hearing aids  n be the random sample Given X=20, n=304

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

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

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

A: Given,margin of error(E)=0.03α=1-0.80=0.2α2=0.1Z0.1=1.2816      (from Z-table)

Q: The scores on the Wechsler Adult Intelligence Scale are approximately Normal, with ?=100μ=100 and…

A: Given dataMean = 100Standard deviation = 15Probability of scoring less than 130 is given by

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.