Example: The National Health Interview Survey for 2011-2014 estimates that 37%   of 18-24 year olds are not meeting the Physical Activity Guidelines for Americans. These guidelines include recommendations for both aerobic and muscle-building exercise.   Suppose that we survey 30 randomly selected students in this age category and find that 45% are meeting the Physical Activity Guidelines for Americans. Find the 95% confidence interval and interpret it.     g.Interpret the interval

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A: Given claim: 50% of the parents who had children in grades K-12 were satisfied with the quality of…

Q: A trade magazine routinely checks the drive-through service times of fast-food restaurants. An 80%…

A: We have given that a trade magazine routinely checks the drive-through service times of fast-food…

Q: Several years ago, 39% of parents who had children in grades K-12 were satisfied with the quality of…

A: I have used Excel function = NORMSINV() for finding critical value

Q: Using the accompanying Accounting Professionals data to answer the following questions. a. Find and…

A: It is given that the accounting professionals are size 20.

Q: Construct a 99.8% confidence interval for the proportion of women who work at home who are college…

A: Given,n=519x=165p^=xnp^=165519=0.318The point estimation for the proportion is 0.318 .

Q: Death penalty: A group claims that the overall feelings of the general population on the death…

A: The objective of this question is to construct a 95% confidence interval for the proportion of…

Q: Practice. Testing a vaccine for HIV. Of 8198 subjects given a placebo, 74 became infected with HIV,…

A: (a)Given that,sample one, x1 =74, n1 =8198, p1= x1/n1=0.009sample two, x2 =51, n2 =8197, p2=…

Q: An issue of Time Style and Design reported on a poll conducted by Schulman Ronca & Bucuvalas Public…

A: (a)given that,possible chances (x)=410size(n)=603success rate ( p )= x/n = 0.6799point of estimate =…

Q: Several years ago, 33% of parents who had children in grades K-12 were satisfied with the quality of…

A: The formula for the confidence interval for the proportion is, Here, confidence level is 0.90. Use…

Q: Refer to the data below: To estimate the mean height of female high school juniors, you take a…

A: Given: data to find mean

Q: Find a 95% confidence interval for the proportion of all U.S. adults with household incomes of at…

A: We need to construct the 95%95\%confidence interval for the population proportion. We have been…

Q: Several years ago, 49% of parents who had children in grades K-12 were satisfied with the quality of…

A:

Q: Example: Compute the 90%, 95%, and 99% confidence intervals for the population mean credit card…

A: The summary statistics for the population mean credit card balances is provided as; The confidence…

Q: Assuming that the population is normally distributed, construct a 95% confidence interval estimate…

A: The question is about confidence intervalGiven :To find :1 ) 95 % CI estimate for the popl. mean…

Q: In a survey, 13 people were asked how much they spent on their child's last birthday gift. The…

A: We have to construct ci.

Q: In a study of the association between cigarette smoking and lung cancer, 1,357 male lung cancer…

A:

Q: Exercise 2 Problem 12 12 Information. You are given the data in the table on the right 21 19…

A: Solution Here is two different questions I am solving exercise 2

Q: A learn-to-type software program claims that it can improve your typing skills. To test the claim…

A: Before After 38 54 34 44 53 50 31 51 55 35 54 45 As the same sampled individuals'…

Q: people in the age group 18-29 and 1500 people in the age group 30-55. The sample proportions of…

A: Given : Given : n1 = 1000 n2 = 1500 confidence level,c=0.95 Significance…

Q: How do you solve? ref W9Q7.

A: For Women nw=10 α=1-0.90=0.10 Degrees of freedom is obtained as- df=10-1=9 The mean and standard…

Q: economy of cars manufactured in 2012. Use these statistics to calculate a 98% confidence interval…

A: Lower bound=-5.400 Upeer bound =1.670

Q: A &B

A: The provided data mentions the value of sample size, n is 928 and the value of x is 128. The…

Q: one with a 95% confidence level and the other with a 99.7% confidence level. Which interval is…

A: Confidence interval is probability, which refers that population parameter will fall within set of…

Q: A SURVEY WAS CONDUCTED IN 2010 AND 2020. THE 2010 RESULTS SUMMARIZED THE RESPONSI WHEREAS THE…

A: The given table is HEALTH ISSUE 2010 SURVEY 2020 SURVEY ATE RECOMMEND AMOUNT OF FIBROUS…

Q: If α = 0.05, then what is the confidence level?

A: Given: α = 0.05   we know that, Confidence level+ α = 1

Q: Construct a 99% confidence interval for the proportion of those aged 65 and over who have sleep…

A: Given

Q: Several years ago, 42% of parents who had children in grades K-12 were satisfied with the quality of…

A:

Q: Determine whether the following statements are true or false. Increasing the sample size while…

A: If the sample size increases, then the standard error of statistic decreases. The margin of error is…

Q: vey asked 1309 people wnether they performed any volunteer work during the past year. A of 518…

A: Given that  Sample size n =1309 Favorable cases x =518 Sample proportion p^=x/n

Q: Teen drinking A study of the health behavior of school-aged children asked a sample of 15-year-olds…

A: Formula for 95% Confidence interval for difference between population means is; Here, X be data for…

Q: An issue of Time Style and Design reported on a poll conducted by Schulman Ronca & Bucuvalas Public…

A: (a)given that,possible chances (x)=410size(n)=603success rate ( p )= x/n = 0.6799point of estimate =…

Q: n a survey, 25 people were asked how much they spent on their child's last birthday gift. The…

A: Givensample size(n)=25Mean(x)=38standard deviation(s)=19confidence interval(c)=98%

Q: A poll asked for people's opinion on whether closing local newspapers would hurt civic life. 425 of…

A: We have given that, Favorable cases (X) = 425 and sample size (N) = 1002  Then,  We will fins the…

Q: 3.1 Construct a 95% confidence interval for the proportion of South Africans who avoided fat in…

A: From given data we have : for 2010 survey sample size=n1=1250 Proportion (Avoided fat)=p^1=0.55 for…

Q: A SURVEY WAS CONDUCTED IN 2010 AND 2020. THE 2010 RESULTS SUMMARIZED THE RESPONSES OF 1250…

A: Confidence interval are used to measure the range where the population proportion lies. It is…

Q: Frum Data Set VI in Appendix B. select a sample of 20 values and find the 90% confidence interval of…

A:

Q: A learn-to-type software program claims that it can improve your typing skills. To test the claim…

A: Before After 52 47 44 42 40 46 50 43 46 34 38 50

Q: If n= 220, p-hat= .4, then what will be the 87.4% confidence interval for the population proportion?

A:

Q: Several years ago, 50% of parents who had children in grades K-12 were satisfied with the quality of…

A: Given Data Sample Size, n = 1105 Number of successes, x = 491.0 confidence…