One hundred and twenty Americans were surveyed about how much time per month they spend watching television. The survey found a sample mean of 140 hours with a sample standard deviation of 44 hours. Construct a 99% confidence interval for the meantime spent watching television per month. Lower______hours Upper______hours

Q: (a) What is the rat's sample proportion p? What is the large-sample 95% confidence interval for p?…

A: Given: Population size, n = 80 Sample size, x = 80 Sample proportion, p^: p^=8080=1

Q: In a survey of 600 personnel directors, 40% thought that they would be hiring new personnel over the…

A:

Q: confidence interval for the difference in the proportion who die between those with an infection,…

A: Given Data n1 = 88 x1 = 25.0 n2 = 113 x2 = 15.0 confidence level,c=…

Q: MUSIC STORE: A music store owner was curious about the number of customers his store gets per day.…

A: Given Information: Mean, x¯=65.5Standard Deviation, s=11.3n=25c=95%

Q: In a random sample of 810 women employees, it is found that 81 would prefer working for a female…

A:

Q: Campus athletics is interested in the proportion of registered students living on campus who play…

A: We are given that 95% confidence interval is correctly calculated from the given data as (0.12,…

Q: Calculate a ninety-nine (99) percent confidence interval for µ, where n = 100, sample mean = 38, and…

A:

Q: A sample of 56 Charleston County households have a mean income of $27,519 with a standard deviation…

A:

Q: Of 118 randomly selected adults, 34 were found to have high blood pressure. Construct a 95%…

A: According to the given information, we have Total number of adults = 118 34 were found to have high…

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

A:

Q: 4a) A survey asked users of Facebook, “Do you believe Facebook should be able to collect user's data…

A: a) The sample proportion is computed as follows, The value of z at 95% confidence level is 1.96,…

Q: In replicate analyses, the carbohydrate content of a glycoprotein ( a protein with sugars attached…

A: Data values are given population standard deviation is not known hence we use T Interval. Sample…

Q: Campus athletics is interested in the proportion of registered students living on campus who play…

A: The 95% confidence interval is (0.12, 0.18).

Q: A sociologist develops a test to measure attitudes towards public transportation, and 27 randomly…

A: Given information- Sample size (n) = 27 Mean x̅ = 73.8 Standard deviation (s) = 21.4 Significance…

Q: The Wall Street Journal reported that automobile crashes cost the United States $162 billion…

A: Givensample size(n)=55mean(x¯)=1613standard deviation(σ)=600

Q: In a survey, a random sample of teenagers were asked whether they have a sibling. The resulting…

A:

Q: 1. In a recent poll 62 out of 149 randomly chosen students at Allen High School say they plan to buy…

A:

Q: In a Gallup Poll of 1005 individuals, 452 thought they were better off financially than a year ago.…

A: Given; p=452n=1005 95% confidence interval is given by- p^±z×p^(1-p^)n true proportion is given as-…

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 recent study of 100 people in Burlingame found that 19 were obese.  Find the 90% confidence…

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Q: The owner of the AGT Gas Station wishes to determine the fraction of customers who pay using a…

A:

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: Which of the following confidence intervals would have a wider width for the same set of data? A 90%…

A: We have find which confidence interval have a wider..

Q: which of the following sample data: sample size= 100 sample mean= 34oz/hr sample variance= 9oz/…

A: which of the following sample data:   sample size= 100   sample mean= 34oz/hr   sample variance=…

Q: Using the accompanying colleges and universities data to find 95% confidence intervals for the…

A: Given:   Liberal Arts Colleges Research Universities 1169 1117 1194 1133 1204 1148 1210…

Q: A researcher asks 600 people if they received a flu vaccine, and 65% said they did. What is the 95%…

A: From the provided information Sample size (n) = 600 65% said they received a flu vaccine that is…

Q: Which of the following confidence intervals would have a wider width for the same set of data? A 90%…

A: which of the following confidence intervals would have a wider width for the same set of data?…

Q: . A sociologist develops a test to measure attitudes about public transportation, and 20 randomly…

A: Answer - A sociologist develops a test to measure attitudes about public transportation,…

Q: Adult men (20-30 years old) tend to watch sports on television daily. A random sample of 30 young…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

Q: 4. A researcher asks 600 people if they received a flu vaccine, and 65% said they did. What is the…

A:

Q: A sociologist develops a test to measure attitudes about public transportation, and 20 randomly…

A: The confidence interval is a set of elements that have been imagined to comprise, with a specified…

Q: Which of the following does NOT have an effect on the width of a confidence interval? Group of…

A: Which of the following does NOT have an effect on the width of a confidence interval? Group of…

Q: 7. For the upcoming football season, the athletic department is considering increasing the price for…

A: We have given that, Sample mean (x̄) = 150$ and standard deviation deviation (s) = 40$ and sample…

Q: 12. Which of the following values falls outside of the confidence interval? Mean number of students…

A: From the provided information, The confidence interval is 28.4±3.7

Q: In 2017, the CDC administered the Youth Risk Behavior Survey (YRBS) to a random sample of 14,795…

A: Obtain the 99% confidence interval for the proportion of the high school students have been cyber…

Q: In a random sample of 200 people, 154 said they watched educational television. We wish to construct…

A: Given there are 200 people, 154 said they watched educational television. a) Given confidence…

Q: In a simple random sample of 144 households in a county in Virginia, the average number of children…

A:

Q: In a poll conducted, 439 of 1007 adults in a certain country polled said they were "picky eaters."…

A: a. The proportion of the respondents said they were picky eaters is, p^=xn=4391007=0.4359≈0.44 Thus,…

Q: 1) In a four-year psychedelic-mushroom experiment, 93 of the 300 subjects reported experiencing…

A: It is given that:

Q: The Wall Street Journal reported that automobile crashes cost the United States $162 billion…

A: Given: n=50σ=600z for 95% CI=1.96

Q: As the sample size gets smaller, what happens to the width of your confidence interval? O Wider /…

A: A confidence interval is an interval with a certain probability that a parameter will fall between…

Q: Pharmaceutical companies promote their prescription drugs using television advertising. In a survey…

A: Given data: Sample size = 80    x = 10 asked their  physician Confidence level  = 95%

Q: Determine the margin of error for the confidence interval for the mean: 23 +1.7 The margin of error…

A: Confidence Interval is an inference process that is used to estimate the population parameter. The…

Q: 1) Jaimie does a study on how many students have passed his classes in the past. He finds that 2739…

A: The random variable students who pass follow normal distribution. The number of successes is 2739.…

Q: Suppose you needed to form a 92% confidence interval for a population mean. What z value would you…

A:

Q: create a 90% confidence interval for the following data:  x = 25 n = 100

A: Here we need to construct a 90% confidence interval.

Q: The Wall Street Journal reported that automobile crashes cost the United States $162 billion…

A: Margin of error (E): The margin of error for the sample mean when the population standard deviation…