Out of 200 people sampled, 28 said they prefer Coke over Pepsi. What is the point estimate for the proportion of ALL people that prefer Coke over Pepsi? ˆp = this part was already answered. 28/200=0.14 What is the standard error for the sampling proportions in this case?

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: (a) The proportions are 22.2% for males and 18.7% for females, The margin of error is 3%, and…

Q: of parents of children in high school felt it was a serious problem that high school students were…

A: Three conditions:1. Random: The sample is selected randomly, the first condition is satisfied.2.…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: Given :  E = 3% = 0.03 p1 = 0.214 p2 = 0.187 Z = 2.576 at 99% confidence

Q: Out of 600 people sampled, 120 said they prefer Coke over Pepsi. What is the point estimate for the…

A: From the provided information, Sample size (n) = 600 120 said they prefer Coke over Pepsi that is x…

Q: I want to estimate the proportion of college professors who believe in aliens. How many college…

A: Given Confidence interval=90% sample proportion is within 5 percentage

Q: One sample has n = 6 and M = 10. A second sample has n = 4 scores with M = 15. If the two samples…

A: Combined mean = n1x1¯+n2x2¯n1+n2

Q: Twenty years ago, 53% of parents of children in high school felt it was a serious problem that high…

A:

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A:

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A:

Q: College officials want to estimate the percentage of students who carry a gun, knife, or other such…

A: a) The confidence level is 93%. Therefore, α = 0.07, α/2=0.035 and 1-α/2=0.965. The margin of error…

Q: Suppose you select a simple random sample of 75 Douglas College students, and you find that 8 are…

A: The point estimate of the population proportion is the sample proportion. Given that, 8 out of the…

Q: A marketing research firm wishes to conduct a poll in a certain region to estimate the proportion of…

A: Solution: From the given information, confidence level is 0.90 and E=0.03.

Q: What is the margin of error for a 99% CI for a mean, when the sample size is 12, the sample average…

A: Given: Sample size, n = 12 Sample mean, x = 52 Sample standard deviation, s = 13 It follows a…

Q: The owner of a local bar specializing in alternative music wanted to determine the average age of…

A: t 95% confidence level, the z value is 1.96 which can be obtained by using the standard normal…

Q: Suppose a company wants to determine the percentage of customers who shop online. How many customers…

A: Given dataError = 3% = 0.03Confidence level = 0.92

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: Solution: Given information: p1^=0.219 Sample proportion of male p2^=0.197 Sample proportion of…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: Given Margin of error=0.04 (a) she uses the estimates of 21.8​% male and 18.1​% female from a…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A:

Q: A researcher wishes to estimate the number of households with two computers. How large a sample is…

A: given data   CI = 0.90, P ( - Z< P < Z ) = 0.90 therefore z = 1.645 ( =z table ) E = 6% =…

Q: Suppose the U.S. president wants to estimate the proportion of the population that supports his…

A: Critical value: The value of α is 0.05 for 95% confidence level. Using excel formula…

Q: Suppose 1,620 of 2,000 registered voters sampled said they planned to vote for the Republican…

A:

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: Given data: Confidence level = 90% To find: Required sample size

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96, p=0.54 and E=0.02.

Q: Suppose a random sample of n= 320 teenagers 13 to 17 years of age was asked if they use social…

A:

Q: Suppose, you want to know, if majority of the people prefer chocolate ice-cream over all others…

A: Solution: Given information: Margin of error = E = 0.03 confidence level = 80%=0.80 Level of…

Q: he margin of error for a 90% CI for a mean, when the sample size is 12, the sample average is 52,…

A: As the population standard deviation is known, we will use t distribution. Degrees of freedom =…

Q: - Suppose the Department of Energy in the Philippines surveyed 200 gasoline stations to determine…

A: a)In the given case, gasoline at all the gas stations is the population whereas the gas stations…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: The formula for margin of error is given as follows: E=zα/2p11-p1n+p21-p2n

Q: Suppose multiple samples of size nn are drawn from a population with a mean of 50. The mean is…

A: Population mean =50

Q: intended population

A: A population is the entire group that you want to draw conclusions about   Intended population:…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: a) Compute the required sample size using the formula: E=zα2 p⏞11-p⏞1n+p⏞21-p⏞2n   Where 'E' is the…

Q: Provide an appropriate response. A researcher wishes to estimate the number of households with two…

A:

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A: From the provided information, Sample size (n) =750 and p0 = 0.54

Q: A recent survey estimated that 19 percent of all people living in a certain region regularly use…

A: The 100 (1 – α)% confidence interval provides an interval estimation of the required population…

Q: Twenty years ago, 54% of parents of children in high school felt it was a serious problem that high…

A:

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A:

Q: Suppose you wish to estimate a population mean based on a random sample of n observations, and prior…

A: The population standard deviation is 12.7, the margin of error is 1.6 and probability(or confidence…

Q: f. What is the point estimate (the statistic) for the true proportion of Pennsylvanians who…

A: f. From the information, the proportion of PennsyIvanians who responded that they would vote for Joe…

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

A: Given that, Sample of 50 peoples is to be drawn and out of which 14 are possessing  characteristic…

Q: Suppose a clothing store wants to determine the current percentage of customers who are over the age…

A:

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: To estimate the male proportion P1 = 0.223 and female proportion P2 = 0.198 Margin of Error E = 0.02…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: Percentage of level of confidence is 95%. Here, margin of error is, E=0.03.

Q: Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high…

A: The value of p0 is 0.52 and the sample size n is 800.

Q: a national caterer determined that 37% of the people who sampled their food said that it was…

A: Given that,  n=144,p=0.37 Let p denote the sample proportion of people saying that the food is…

Q: The sampling plan: n = 350 and c = 1, meets a confidence-reliability of (95%, 99%) A. True or False.…

A:

Q: d. University administrators would like to conduct a new survey in May to update this estimate. They…

A: Given: Margin of error (E) = 2.25% = 0.0225 Confidence level = 98% The estimate from the previous…

Q: If you want to be 99​% confident of estimating the population proportion to within a sampling error…

A: From the provided information, Confidence level = 99% Margin of error (E) = ±0.05 Proportion (p) =…

Q: ut of 200 people sampled, 28 said they prefer Coke over Pepsi. What is the point estimate for the…

A: It is an important part of statistics. It is widely used.  Since the question has multiple sub parts…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A: Given Error, E=±0.05CL=0.99

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A:

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.