Of 500 randomly selected college students, 200 use a particular brand of mobile phone. Assuming that every college student is a mobile phone user, for this sample, which one represents the 95% confidence interval for the proportion of the students who use this particular brand?   A ) (0.374, 0.446) B ) (0.344, 456) C ) (0.334, 0.466) D ) (0.364, 0.436) E ) (0.357, 0.443)

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: When two births are randomly selected, the sample space for genders is bb, bg, gb, and gg. Assume…

A: Sample proportions of girlsProbability00.250.500.510.25Sum1

Q: 45 Bank customers depositing a check, 21 received some cash back. a. Construct a 90% confidence…

A: Given that: Sample size (n) = 45  X represents received some cash back. X = 21 At 90 % confidence…

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 phase three clinical trial for a new medication proposed to treat depression has 1191…

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

Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…

A:

Q: of the sample proporions equal proportion O A. Yes, both the mean of the sample proportions and the…

A: In the population the proportion of girl = 1/2  Now, distribution of sample proportion is given. So,…

Q: In a random sample of 1003 US adults, 32% said that national identity is strongly tied to birth…

A: It is given that, 32% of the 1003 adults said that national identity is strongly tied to birth…

Q: Suppose we observed 120 successes in a random sample of 300 subjects. What is the 98% confidence…

A:

Q: In a particular year, approximately 136,943,000 people visited an emergency room in the United…

A: Given thatSample size (n)=100000Number of people admitted to hospital (X)=12462We have to find 99%…

Q: To estimate the proportion of smoker a sample of 100 men was selected. In the selected sample, 40…

A:

Q: Over half of all American teens (ages 12 to 17 years) have an online profile on at least one social…

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

Q: The Graduate Schools take a random sample of recent MS graduates (n=135) and finds that 12 of these…

A: Givenn=135x=12confidence interval = 90%p^=xn=12135=0.0889α=1-0.90=0.10α2=0.05zc=zα2=z0.05=1.6449…

Q: A local health centre noted that in a sample of 400 patients, 80 were referred ta hospital. a.…

A: Given, n = 400            x = 80 Therefore, population proportion p^ = 80400 = 0.2 The critical…

Q: The marketing department of an airline wants to show management that more than 60% of business…

A: Given, The marketing department of an airline wants to show management that more than 60% of…

Q: A research center survey of 2,388 adults found that 1,904 had bought something online. Of these…

A: Given: n=2,388α=0.05

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: The confidence interval at the 95% confidence level for mu(u) was reported to be (69.7, 90.3). Which…

A: Given, 95% confidence interval is (69.7, 90.3) lower limit at 95% C I = 69.7 upper limit at 95% C I…

Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…

A: Given Confidence interval=89% n(sample size)=413 x( number of success)=306

Q: Google is studying the quality of results returned by an upgraded version of its search engine.…

A: From the given information, it can be observed that x = 23 and n =100.

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: From the provided information, Sample size of Country B (n) = 1023 Sample proportion (p̂) = 0.22…

Q: Of 58 bank customers depositing a check, 15 received some cashback. a.) Construct a 90 percent…

A: Solution: a. Let X be the number of depositors ask for cash back and n be the sample number of bank…

Q: The career center at a large university surveyed a random sample of students who graduated the…

A: First, we need to calculate the proportions of engineering and business majors who were able to find…

Q: The individual object in the study was a randomly selected . This is computer-graded so use exact…

A:

Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…

A: Confidence intervals is an inference process which can be used to estimate the population parameter.…

Q: When two births are randomly selected, the sample space for genders is bb, bg, gb, and gg. Assume…

A: The sample space for genders is These four outcomes are equally likely.

Q: in a random sample of 800 austin automobile owners, it was found that 480 would like to see the size…

A: We have to find given ci.

Q: Most married couples have two or three personality preferences in common. A random sample of 384…

A: Obtain the 95% confidence interval for the difference between two population proportions. The 95%…

Q: Five fourth-grade children were selected at random from the entire class and timed in a short race.…

A: Given data : The times in seconds were 6.3, 4.2, 4.7, 6.0, and 5.7

Q: Insurance companies are interested in knowing the population percent of drivers who always buckle up…

A:

Q: Gallup Organization poll of n= 856 randomly selected American adults in October 2017 found that 60%…

A: Fkk

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: For the given data The99​%confidence interval for the proportion of adults from Country B who say…

Q: A CBS News poll conducted July 29–August 4, 2014, surveyed 1344 randomly selected American adults.…

A: Total number of American adults who participated in the CBS News poll survey=1344,Out of these…

Q: In a past presidential​ election, 37,979,113 people voted for Candidate​ A 37,758,117 for Candidate​…

A: a. In the past presidential​ election, 37,979,113 people voted for Candidate​ A; 37,758,117 for…

Q: Of 266 employees selected randomly from one company, 13.53% of them commute by carpooling. Find the…

A:

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: 10 squirrels were found to have an average weight of  610  grams with a sample standard deviation of…

A: We have given that  Sample size n =10 Sample mean =610 Standard deviation =7.75

Q: The figure to the right shows the results of a survey in which 1005 adults from Country​ A, 1023…

A: For the given data Construct a 99​% confidence interval for the population proportion of adults s…

Q: n a survey of 3422 adults aged 57 through 85​ years, it was found that 82.7​% of them used at least…

A:

Q: Social Networking Sites In a survey of 2255 randomly selected US adults (age 18 or older), 1787 of…

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.