In a survey of 3213 adults aged 57 through 85​ years, it was found that 83.9​% of them used at least one prescription medication. Complete parts​ (a) through​ (c) below. a. how many of the 3213 subjects used at least one prescription medication?  b. construct a 90% confidence interval estimate of the percentage of adults aged 57 through 85 years who use at least one prescription medication. c. what do the results tell us about the proportion of college students who use at least one prescription medication?

Q: Refer to the data set of 20 randomly selected presidents given below. Treat the data as a sample and…

A: Given that            sample size, n=20 Here, we have to construct a​ 95% confidence interval…

Q: In a survey of 3005 adults aged 57 through 85 years, it was found that 81.7% of them used at least…

A: Given :  n = 3005 p̂=0.817

Q: 1.     Ten students on a low-fat diet designed to lower their cholesterol and recorded their before…

A: The data is given, Level of significance = α = 1- 95% = 1-0.95 = 0.05 sample size = n = 10 a) Here…

Q: According to a Harris Interactive survey of 2401 adults conducted in April 2009, 25% of adults do…

A:

Q: Situation 2: The running time (in minutes) of sample YouTube videos produced by a particular vlogger…

A: As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost other…

Q: a survey of 3088 adults aged 57 through 85​ years, it was found that 87.1​% of them used at least…

A: The formula for computing confidence interval is,  n is the sample size and P is the proportion.

Q: A May 2000 Gallup poll found that 38% of a random sample of 1012 adults in the United States said…

A: (a)   Obtain the 96% confidence interval to estimate the true proportion of all U. S. adults who…

Q: n a survey of 500 students, 180 students said that they prefer classes on Mondays and Wednesdays…

A:

Q: . How many of the 3335 subjects used at least one prescription​ medication? b. Construct a​ 90%…

A: n = 3335 p = 0.804

Q: In a survey of 3110 adults aged 57 through 85 years, it was found that 87.9% of them used at least…

A:

Q: malls were the exclusive focus of 10 percent of articles. The standard error of that proportion is 3…

A: From the provided information,Confidence level = 95%

Q: 829 adult were surveyed in one city, and 51% of them are opposed to the use of the photo-cop for…

A: Given data: n = 829 p = 0.51

Q: The International Nanny Association (INA) reports that in a sample of 928 in- home child care…

A: Solution: A. Let X be the number of number of nannies who have passed the INA certification exam and…

Q: A national poll found that 684 people out of 1100 believe in UFO’s. Answer the following questions.…

A: Given data,Number of people n=1100People who believe in UFO is x=684Find the 94% confidence interval

Q: In a survey of 3015 adults aged 57 through 85 years, it was found that 85.6% of them used at least…

A:

Q: In a survey of 3115 adults aged 57 through 85​ years, it was found that 86.1​% of them used at…

A:

Q: A magazine article reported on Springfield School District's magnet school programs. The article…

A:

Q: The effectiveness of a weight loss program is to be evaluated by measuring the weight of eight…

A: Obtain the 95% confidence interval for the mean difference. The 95% confidence interval for the mean…

Q: If you aim to construct a 99% confidence interval for the percentage of high school students taking…

A: The objective of this question is to determine which sample size will result in the smallest margin…

Q: Refer to the data set of 2020 randomly selected presidents given below. Treat the data as a sample…

A: From the provided data set, it is clear that out of 20, 10 presidents were taller than their…

Q: 3. You plan to conduct a survey to find out what proportion of the workforce has two or more jobs.…

A:

Q: In a Harvard School of Public Health survey, 2105 of 10,904 randomly selected U.S. college students…

A: Given data is appropriate for testing of hypothesis. Because it is a large sample test for single…

Q: In a survey of 3473 adults aged 57 through 85​ years, it was found that 84.6% of them used at least…

A:

Q: 4. A market-research firm asked 300 people about their shampoo-purchasing habits. Fifty-five people…

A:

Q: 1. In a recent study, the researchers want to find the information about the percentage of adults…

A: Given datan = 3026proportion of people who prefer to get their news online = 0.38

Q: The branch manager of an outlet store​ (Store 1) of a nationwide chain of pet supply stores wants to…

A: Comment: As per the our company guidelines we are supposed to answer only three subparts. Kindly…

Q: 1-Create the confidence interval for the mean Overall Grade for those with 78 or better on Chapter…

A: Given data: Chapter Review Overall Grade 98 96 96 94 94 90 93 94 92 91 92 96 91 93…

Q: In a survey of 1,000 people, 420 are opposed to an income tax increase. Construct an 85 percent…

A: Find z-critical value:…

Q: Ten different families are tested for the number of gallons of water a day they use before and after…

A: From the provided information, The difference between before and after are as follow: Before…

Q: Refer to the data set of 2020 randomly selected presidents given below. Treat the data as a sample…

A: It is given that the data of random sample of 20 randomly selected presidents. From the given data,…

Q: A publishing company is studying the sales of various franchises in their chain of stores. A…

A: We are given confidence intervals for the population mean daily sales at 90%, 95%, 97% and 99%…

Q: In a survey of 3393 adults aged 57 through 85​ years, it was found that 82.8​% of them used at least…

A: (a). Obtain the number of subjects who used at least one prescription medicine: It is given that…

Q: Ten students on a low-fat diet designed to lower their cholesterol and recorded their before and…

A: Let X represents the cholesterol level before diet and Y represents the cholesterol level after…

Q: 1. In a survey, 957 internet users chose to respond to this question posted on ratemyprofessors.com:…

A: Part a: It is an observational study. (This is observations regarding the current scenario and not…

Q: Refer to the data set of 20 randomly selected presidents given below. Treat the data as a sample and…

A: From the provided data set, it is clear that out of 20, 10 presidents were taller than their…

Q: In a survey of 3332 adults aged 57 through 85​ years, it was found that 80.7​% of them used at least…

A:

Q: If 64% of a sample of 550 people leaving a shopping mall claims to have spent over $25 create and…

A: Given,   Sample size = 550 Sample proportion = 0.64   Critical value: Using z-table, the z-critical…

Q: b. Write the equation of the line of best fit. c. Predict the final grade given eight absences.…

A: The provided information is  Number of absences ((x) Final Grade (y) xy x2 0 97 0 0 1 97 97 1…

Q: The figure to the right shows the results of a survey in which 997 adults from Country​ A, 1022…

A: Given data For country A n = 997

Q: Listed below are the amounts of net worth​ (in millions of​ dollars) of the ten wealthiest…

A: Sample size(n)=10sample mean(x¯)=171standard deviation(s)=33.79020degrees of…

Q: Do more than 50% of U.S. adults feel they get enough sleep? According to Gallup's December 2004…

A: Sample size =1003 Number of US adults surveyed said that get enough sleep =552  We have to find the…

Q: .Find 95% confidence interval for the population mean, if the sample size is 64, the sample mean is…

A: It is given that Sample size n = 64 Sample mean M = 508 Sample SD s = 28 The critical value of t at…

Q: A university dean is interested in determining the proportion of students who receive some financial…

A: Given :-   randomly selects 200 students and finds that 118 of them are receiving financial aid…

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.