Gallup Organization poll of n= 856 randomly selected American adults in October 2017 found that 60% of those surveyed felt that their weight was about right. A 95% confidence interval for the percentage of American adults who think their weight is about right is  a) (0.741, 0.852) b) (0.568, 0.633) c) (0.433, 0.564) d) (0.342, 0.451) e) (0.572, 0.528)

Q: In a random sample of 100 men in the United States, 55 of them were married. Using a 95% confidence…

A: We have given that,  Sample size (n) = 100 and favorable cases (X) = 55  Then,  We will find the 95…

Q: A poll of 827 students at Alpha State College found that 61% of those polled preferred a quarter…

A: Given that Sample size n = 827 Sample proportion of students who prefer a quarter system = 0.61 The…

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: 25.1, 22.3, 21.8, 17.1, 19.4, 29.2, 21.4, 26.5, 16.7, 19.4, 20.5 Construct a 90% confidence interval…

A: From the provided information, Sample size (n) = 11 Confidence level = 90%

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: Table 2 shows the nights spent in Malaysia by the tourists from China, Thailand, and Vietnam for the…

A: Introduction: Denote μ1, μ2, μ3 as the mean number of nights spent in Country M by tourists from…

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: 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: A random sample of 200 BZU students shows that 80 of them have O blood type. Let p be the BZU…

A: There are totally 200 BZU students are sampled in which 80 of them have blood type. The variable p…

Q: In one community, a random sample of 25 foreclosed homes sold for an average of $443,776 with a…

A: From the provided information,Standard deviation (s) = 196739Sample mean (x̄) = 443776Sample size…

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: A Gallup Youth Survey in 2001 found that of 501 randomly selected teenagers in the U.S., 271 of them…

A: Given Total number of teenagers selected = 501Number of teenagers said who get along with their…

Q: The effectiveness of a blood-pressure drug is being investigated. An experimenter finds that, on…

A: We have given that the sample size n=454, Average = 41.9 and standard deviation = 9.9.

Q: In a recent random sampling, where 600 adults were surveyed, 16.4% indicate that they have fallen…

A: Given that, 600 adults were surveyed, 16.4% indicate that they have fallen asleep watching…

Q: A study of 420,074 cell phone users found that 138 of them developed cancer of the brain or nervous…

A:

Q: A 95% confidence interval for mean was found to be (18.54, 21.22). What was the margin of error? O…

A: Given: confidence interval ( 18.54 , 21.22 ) Need to find margin of error(ME) .

Q: Find a 90% confidence interval for the population mean for the data set (120, 80, 83, 115, 95, 90,…

A: From the provided information, Sample size (n) = 20

Q: A survey of 20 people asked, “If you’ve ever been married, how old were you when you were first…

A:

Q: In a survey of 1002 people, 70% said that they voted in a recent presidential election. In…

A: n=1002

Q: A trade magazine routinely checks the drive-through service times of fast-fod restaurants. A 95%…

A: Given : confidence level =95%Lower limit =163.3Upper limit =167.1

Q: Given a 95% confidence interval for p1-p2 as (-0.98, -0.78). What can be concluded?

A: The 95% confidence interval for p1–p2 is (–0.98, –0.78).

Q: In a survey of 3293 adults aged 57 through 85​ years, it was found that 80.8​% of them used at least…

A: Given Information Total adults(n) = 3293

Q: The report of a sample survey of 1,014 adults says, "With 95% confidence, the true population…

A: The objective of the question is to understand the meaning of the term '95% confidence' in the…

Q: A team researching electricity consumption in a city surveyed 432 homes. At a 95% confidence level,…

A: Given that  Confidence interval (CI) = (710.88 , 747.88) Sample size (n) = 432   We know that…

Q: survey conducted by Gallup in 2020 asked 1,102 randomly selected U.S. adults, "What do you think is…

A: We have given that  Sample size n=1102 90% confidence interval.  = (0.6773, 0.7227)

Q: You are trying to estimate the percent of people in California who have a college degree. You…

A: Given that  Sample size n =60 Favorable cases x =18 Sample proportion p^=x/n  =18/60 =0.3

Q: The following dataset shows the AP History scores of 10 students: 3, 4, 3, 2, 3, 5, 2, 4, 1, 2 a)…

A: We have given that  Data : 3, 4, 3, 2, 3, 5, 2, 4, 1, 2 Sample size n = 10 I want to find mean and…

Q: Data were collected on the amount spent by 64 customers for lunch at a major Houston restaurant.…

A: As per our guidelines we are supposed to answer only three subparts kindly post the remaining…

Q: a​ poll, ​37% of the people polled answered yes to the question​ "Are you in favor of the death…

A:

Q: A national survey of 2500adult citizens of a nation found that 25​% dreaded​ Valentine's Day. The…

A: Given that sample size is n=2500. Let p denote the true population proportion of adults those…

Q: In a​ poll, 51​% of the people polled answered yes to the question​ "Are you in favor of the death…

A: Let p denote the proportion of people answered yes to the question. Let E denote the margin of…

Q: We take a sample of 218 men and find they have an average commute time of 32 minutes with a standard…

A: Given: a sample of 218 men and find they have an average commute time of 32 minutes with a standard…

Q: = 225 male students were asked if “wealth was necessary for happiness.”In the sample 106 responded…

A: The sample proportions are computed as follows At 95% confidence level, the z value is 1.96 which…

Q: A simple random sample of 1000 people age 18 or over is taken in a large town. It turns out that 223…

A: From the provided information, Sample size (n) = 1000 223 people in the sample are newspaper…

Q: A simple random sample of 5 observations from a normal distribution was taken, and the following…

A:

Q: The following sample data are from a normal population: 15, 11, 30, 19, 22, 25, 33 28, and 36.…

A: Given: The sample data from normal population 15,11,30,19,22,25,33,28,36. n=9C.I.=0.98

Q: From a random sample of 100 women, 15 have dangerous reading blood sugar levels higher than 300…

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.