1. A simple random sample of 300 U.S. adults indicated that 11% approve of attempts to clone a human.  Calculate a 95% confidence interval using the results of the survey. Express the interval in % form, rounded to 1 decimal place.   Group of answer choices (7.5%, 14.5%)

Q: 2) Assume the p=.03 (3%). How large a sample is needed to estimate the proportion of breast cancer…

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Q: Calculate the lower 95% confidence interval for the population mean. (round to the nearest tenth)…

A: given data n = 31σ2 = 15∴σ = 15 = 3.873x¯ = 5695% ci for μ = ?

Q: Find the indicated margin of error. Out of 260 trials, 150 turned out positive. Find the margin of…

A: It is given that the sample size (n) is 260 and the number of positive trials (x) is 150.

Q: Use the sample shown to construct a 90% confidence inter estimate the population mean. Express your…

A: As the population standard deviation is not known, we will use t-distribution. The edges of freedom…

Q: 30. Bob draws a simple random sample from an original population. The sample size is n = 51, the…

A: Given : n= 51.0 , x̄= 78.0 s= 14.0 At 95.0 % confidence level , z score= 1.96

Q: The following sample data are from a normal population: 10, 8, 12, 15, 13, 11, 6, 5. What is the…

A: Given data is10,8,12,15,13,11,6,5sample size(n)=8sample mean(x¯)=10standard…

Q: n a survey of 3117 ​adults, 1473 say they have started paying bills online in the last year.…

A: Given problem Given that   In a survey of 3117 ​adults, 1473 say they have started paying bills…

Q: If n = 220,p = 0.4,then what will be the 87.4% confidence interval for the population proportion?

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Q: A 95% confidence interval for the proportion p active voters in the municipality of Aibonito is 0.57…

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Q: Suppose the 95% confidence interval for a population mean is (20.5, 35.5). What is the margin of…

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

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Q: Suppose you calculate a 99% confidence interval to be: 13.05 to 20.75. Determine the margin of error

A: Given data: The given upper limit is b=20.75. The given lower limit is a=13.05.   The expression for…

Q: A survey asks respondents to rate their political views on a seven-point scale, where 1 = extremely…

A: Given n=1041 Mean=4.68 Standard deviation=1.12

Q: A poll for a statewide election has a margin of error of 1.3 percentage points.   How many voters…

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Q: Of 600 students sampled, 480 said they hoped to own a house someday. With 95% confidence, what is…

A: It is given that  Sample size, n = 600 Favourable cases, X = 4 Sample proportion, p^ = X/n  =…

Q: sample of 40 observations is selected from a normal population where the population variance is 625.…

A: According to the given information in this questionThere are more than three subparts according to…

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: A study of 420,078 cell phone users found that 132 of them developed cancer of the brain or nervous…

A: given that,possible chances (x)=132size(n)=420078success rate ( p )= x/n = 0.000314point of estimate…

Q: A television sports commentator wants to estimate the proportion of citizens who​ "follow…

A: Solution: From the given information, confidence level is 0.96 and E=0.02.

Q: A political candidate has asked you to conduct a poll to determine what percentage of people support…

A: Solution:There is no estimates available, hence the sample proportion is assumed to be 0.50.The…

Q: Use the following information to construct a 90%,95%,& 99% confidence interval : Sample Mean: 111.7…

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Q: 1. A poll of 2,500 people shows that 50% approve of a smoking ban in bars and restaurants. What is…

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Q: 1. A professor is interested in how long the average biostat student studies per night, so he asked…

A: Given data:  n = 10 Data: 3, 4.5, 6, 5.5, 5, 4, 3, 2.5, 5, 3 hours.  Confidence level = 90%…

Q: Suppose someone wanted an 75%-confidence interval. What value of z should they use? Choose the…

A: Level of significance ɑ=0.25

Q: 3469 adults aged 57 through 85​ years, it was found that 85.6​% of them used at least one…

A: It is given that sample size (n) is 3,469 and p hat value is 0.856.

Q: Mr. Price calculates a 95% confidence interval for the difference between the proportion of Aaron…

A: The 95% confidence interval for P Rodgers - P Mahomes is given as (-0.05, 0.15). When the repeated…

Q: Stanford University conducted a study of whether running is healthy for men and women over age 50.…

A: Given information: n = 695 P(Died) = 1.1%

Q: An investigative reporter contacts a random sample of hotels, and finds a 95% confidence interval…

A: Given that  The 95% confidence interval for the proportion of hotels in the united states have…

Q: 1. Online News In a Harris poll of 2036 adults, 40% said that they prefer to get their news online.…

A: Given that the sample size is n=2036 and sample proportion, p^=0.40. Confidence level=95%…

Q: Your state is considering raising the legal age for consumption of alcoholic beverages to 21 years…

A: p = 0.5 Margin of error = 0.01

Q: UC Berkeley randomly selects 100 students to represent them on the World Universities Congress next…

A: UC Berkeley randomly selects 100 students to represent them on the World Universities Congress next…

Q: Find the sample size, n, needed to estimate the percentage of adults who have consulted fortune…

A: Obtain the sample size of a preliminary estimate for p is 0.14.   The formula of sample size is,…

Q: 2.) A survey of 200 college students revealed that 160 of them eat dessert daily. Construct a 95%…

A: