A survey was conducted to determine the proportion of adults who approve of attempts to clone a human. Based on the response of 1000 adults a 90% confidence interval was calculated to be (0.09, 0.13). A.What is the point estimate of the true proportion of adults who approve of attempts to clone a human? B.The margin of error for the confidence interval is

Q: Given that 200 items of 800 are defective, construct the following confidence intervals for the…

A:

Q: The correct value of Z to use for an 80% confidence interval for is: O A. 1.96 О В. 1.28 O C. 2.33 O…

A:

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: d. FIND t a n = 10 for the 90% confidence interval for the mean. %3D

A: d. Given: n=10 α=0.1 The degrees of freedom is obtained as below: df=n-1=10-1=9 Critical value: The…

Q: f. A sample of 60 Grade 10 students' ages was obtained to estimate the mean of all Grade 9 students.…

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Q: Construct a 90% confidence interval to estimate the population mean using the accompanying data.…

A: Given that  Sample mean (x¯) = 85 Population standard deviation (σ) = 20 Sample size (n) = 16…

Q: A confidence interval was found to be (2.4, 7.9). What was the point estimate? O A. 5.27 O B. 5.2 O…

A: Given confidence interval is (2.4 , 7.9)Upper limit =7.9Lower limit =2.4

Q: Find z, for the 84% confidence interval for the population mean. O a. 0.7955 O b. 1.44 O c. None O…

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Q: A. Calculate a 95% confidence interval for the coefficient of height, and interpret it in the…

A: The given variables are volume in cubic feet, height in feet, and diameter in inches of trees.

Q: The width of a confidence interval for the population proportion will be: Select one: a. wider for…

A:

Q: In a survey of 3700 TV viewers, 834 said they watch network news programs. Find the margin of error…

A: Solution

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: In terms of z scores, a 95% confidence interval consists of which of the following ranges? 1. ±1 z

A: Given, Z=x-μσ where, x= observed value μ=mean of the sample σ=standard deviation

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

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Q: Two researchers drew samples to estimate the same population. Here are the confidence intervals they…

A: a. The confidence interval A is, (0.52, 0.58).

Q: Construct the confidence interval for the population mean y. C= 0.90, x=16.6, o= 10.0, and n= 80

A: Here, C=0.90, x=16.6, σ=10.0, and n=80.

Q: A 95% confidence interval for the population proportion of professional tennis players who earn more…

A: 95% confidence interval for p : (0.82,0.88)Sample size used(n) = ? Margin of error : E = sample…

Q: ccording to the data, calculate a 90% confidence interval for the sample mean. What was the T Score…

A: Solution: n= 30 Sample size ∑xi=642 x=∑xin=64230=21.4 Sample mean s2=∑(xi-x)2n-1=56.52414 Sample…

Q: A Gallop Poll in 2015 found that 75% of respondents believed in an afterlife, 15% were not sure or…

A: Given Information :  A Gallop Poll in 2015 found that 75% of respondents believed in an afterlife,…

Q: na survey of 2231 adults in a recent year, 1464 say they have made a New Year's resolution.…

A: Given data, n=2231 x=1464 p=x/n=1464/2231=0.656

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: A 95% confidence interval forp is given as (0.34,0.66). How large was the sample used to construct…

A: Formula for the sample size needed to estimate a population proportion is

Q: The Anthropology Department at UC Berkeley is measuring student heights. 100 male students are…

A: Here is given that, mean is 180 and standard deviation is 5. Sample number is 100. We will use one…

Q: A confidence interval was constructed to approximate a population proportion. The interval was from…

A: We have given that,  Let p̂ represents the sample proportion and E represents the margin of error,…

Q: Use the given degree of confidence and sample data to construct a confidence interval for the…

A: Obtain the 99% confidence interval for the true proportion of all college students who own a car.…

Q: A human resource manager wants to see if there is a difference in the proportion of minority…

A: Confidence Interval: Confidence interval is the interval estimate of the population parameter. It is…

Q: A statistics practitioner took a random sample of 43 Note: For each confidence interval, enter your…

A: n = 43 standard deviation = 27 mean = 104 95% confidence interval for mean is given by  x±zα2*σn 104…

Q: Two intervals are given, A and B, for the same value of the explanatory variable. A: 2.1 to 7.7; B:…

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Q: FIND t a n = 15 for the 98% confidence interval for the mean.

A: Provided information that, n=15 Alpha (α)=1-0.98=0.02 α/2=0.01

Q: Which of the following confidence levels and significance levels are appropriate for using a…

A: The confidence interval at 100 (1 – α) % confidence level gives us an interval estimate about the…

Q: Suppose you calculate a 95% confidence interval for a proportion to to be: 0.39 to 0.78. Determine…

A: Given,   Lower bound = 0.39​ Upper bound = 0.78   Here, we use to determine the margin of error.

Q: In a survey of 2105 adults in a recent year, 737 made a New Year's resolution to eat healthier.…

A:

Q: Construct a 99% confidence interval to estimate the population mean using the data below. x=37 o=11…

A:

Q: A test was taken by 90 students. A random sample of 10 scores found the following results: 93  71…

A: Given, sample size = 10 population size = 90 Random sample = 93,71,62,75,81,63,87,59,84,72

Q: If X=72​, σ=13​, and n=66​, construct a 95​% confidence interval estimate of the population​…

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Q: Construct the confidence interval for the population mean for the number of hours that students…

A: To calculate: The 97% confidence interval.

Q: A confidence interval was constructed to approximate a population proportion. The interval was from…

A: Given Data Lower limit,LL = 12.5 upper limit,UL = 18.5

Q: Assume that the following samples are independent. In a random sample of 400 women, 47% favored…

A: Obtain the 98% confidence interval for the difference between the population proportions.   The 98%…

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.