A researcher was hired to estimate the proportion of American households that have broadband internet access. The researcher calculated the following 95% confidence interval. 0.461

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

A: Sample size=n=100 Number of smokers=40 Poportion o f smokers=p=xn=40100=0.4 Proportion of…

Q: A poll of 1834 U.S. adults found that 735 U.S. adults, or 40.076% regularly used Facebook as a news…

A:

Q: Use he given confidence Interval to find the margin of error and the sample proportion.…

A: Given Data Lower limit = 0.786 upper limit = 0.810

Q: The mayor is interested in finding a 90% confidence interval for the mean number of pounds of trash…

A: Given: Sample Size (n)=226 Sample Mean (X)=37.3 Standard deviation (s)=7.2

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

A: Given,   Sample size = 359 Sample mean = 45.6 Sample standard deviation = 21.3   Since the…

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: The confidence interval is 0.679,0.707. The margin of error is, E=Upper bound-Lower…

Q: Construct a confidence interval for the mean of the paired differences for the two populations with…

A: Solution: From the given information, n=32, d-bar=1.358, α=0.05 and sd=0.635.

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: From the provided information, Confidence interval is (0.751, 0.777)

Q: Find a 95% confidence interval for a mean, µ, where n = 324, x̄ = 2.7, s = .91, and se = .06.

A: Given: n = 324, x̄ = 2.7, s = .91, se = .06.

Q: A random sample of 10 fields of corn has a mean yield of 37.1 bushels per acre and standard…

A: Sample size (n) = 10Mean (x¯) = 37.1 bushels per acreStandard deviation (s) = 5.91 bushels per…

Q: Find the left and right critical values used in the confidence interval for the ratio of the…

A: The level of significance is 0.10 (=1-0.90).

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: The given confidence interval for p is (0.779, 0.803). The value of margin of error is,

Q: b. In the year 2000, a survey of 1103 U.S. adults were asked who they felt was the greatest…

A:

Q: Find the following. Enter your answer rounded to at least two decimals. Z(a/2) for the 92%…

A: Answer: From the given data, 92%confidence interval,

Q: How often do women feel sad? A recent GSS asked, "How many days in the past seven days have you felt…

A:

Q: professor wants to estimate how many hours per week her students study.  A simple random sample of…

A:

Q: Find the critical value z needed to construct a confidence interval with level 97%. Round the answer…

A: Given: Confidence level = 97% = 0.97 Significance level = 1-0.97 = 0.03 Zα/2 = Z0.03/2= Z0.015=…

Q: 6. to the nearest percentage point, the margin of error for this survey is?

A: Given: Lower limit = 0.74 Upper limit = 0.86 The point estimate can be calculated as: Point estimate…

Q: The 96% confidence interval for a population proportion is (0.36, 0.48). Using the confidence…

A: Answer: From the given data, The 96% confidence interval of a population proportion is: (0.36, 0.48)

Q: The scores on a standardized test for 322 students in nontraditional math classes were compared to…

A: We have find given confidence interval..

Q: A random sample of 11 fields of spring wheat has a mean yield of 20.2 bushels per acre and standard…

A: Sample size, n=11 Sample mean, x¯=20.2 Sample sd, s=5.19 CL=0.99

Q: One​ year, the mean age of an inmate on death row was 40.1 years. A sociologist wondered whether the…

A: Here, the claim is that the mean age of a​ death-row inmate has changed. This is representing in the…

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A:

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: The confidence is between (0.698, 0.724). The (1-α) % confidence interval is as follows:

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: According to the given information in this questionWe need to find the margin of error and sample…

Q: USE 3 DECIMAL A financial analyst wants to understand the preference of the people investment…

A: Null and alternative hypotheses : Where, p1 is the proportion of people in 2010 who prefer to…

Q: Mean or average used for measuring central tendency is also called as  a.

A: Mean or average used for measuring central tendency is also called as : Measures of Central tendency…

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: We have given that Confidence interval = (0.775,0.799)Upper limit = 0.775Lower limit = 0.799

Q: In the estimation of the population mean, what if given that last year mean is 7.05 and SD is…

A: Confidence Interval provides a range of values for the estimated parameter.

Q: One year, the mean age of an inmate on death row was 40 6 years. A sociologist wondered whether the…

A: Given: μ = 40.6 x¯ =38.9 s = 8.4  n = 32

Q: Past experience has indicated that the breaking strength of yarn used in manufacturing drapery…

A: Given:

Q: place. Answer: Lower endpoint: Upper endpoint: 41. Given two independent random samples with the…

A:

Q: A survey was conducted that asked 1012 people how many books they had read in the past year. Results…

A: GivenMean(x)=13.1standard deviation(s)=16.6sample size(n)=1012confidence…

Q: Determine the margin of error. It has been determined with 95% confidence that the proportion of…

A: Given: 95% confidence interval is (0.78, 0.82) So, Lower limit = 0.78 Upper limit = 0.82

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: Plug in all the values in the formula, we get Therefore,

Q: A biologist reports a confidence interval of (3.5,3.9) when estimating the mean height (in…

A: The objective of this question is to calculate the margin of error from a given confidence interval.…

Q: In a survey of 2206 adults in a recent year, 1441 say they have made a New Year's resolution.…

A: As per our guidelines we are suppose to answer only one question.

Q: One​ year, the mean age of an inmate on death row was 39.1 years. A sociologist wondered whether the…

A: Population mean, μ=39.1 Sample size, n=32 Sample mean, x¯=37.7 Sample standard deviation, s=9.2…

Q: 530 males in the sample who gave a numeric response from 0 to 6, the mean was 2.51 and the standard…

A: Provided information is, n =530 x̅ =2.51 s =0.87 90% confidence interval can be calculated as:…

Q: Use the given confidence interval to find the margin of error and the sample proportion.…

A: Given We have given that confidence interval (0.640 ,0.670) lower limit = 0.640  Upper limit = 0.670…

Q: approximately normal. Step 1 of 2: Find the critical value that should be used in constructing the…

A: We have given that  Sample mean = 0.890 Sample standard deviation = 0.0312 Sample size = 4

Q: One year, the mean age of an inmate on death row was 40.9 years. A sociologist wondered whether the…

A:

Q: Construct a 90% confidence interval of the mean pulse rate for adult females. bpm bpm <µ< (Round to…

A: The descriptive analysis is conducted using EXCEL. The software procedure is given below: Enter the…

Q: A random sample of 9 fields of rye has a mean yield of 39.4 bushels per acre and standard deviation…

A: The sample mean is 39.4 and the standard deviation is 4.09.