Construct a 95% confidence interval of the population proportion using the given information X equals 120 and n equals 300.  What is the lower bound and upper bound?

Q: Find the critical value for the population mean if there are 756 cats in a sample and you want a 91%…

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Q: Construct a 99% confidence interval for the mean

A: a) Let to help a consumer assess the risks they are taking, the Food and Drug Administration…

Q: A 90% confidence interval for the population mean ?is 18 <u< 24, What is the sample mean

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Q: What is meant by saying that a 1-a confidence interval is a. exact?b. approximately correct?

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

Q: If n = 560 and X = 448, construct a 95% confidence interval for the population proportion, p. %3D…

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Q: In a survey of 2344 ​adults, 715 say they believe in

A: Given that there are 2344 adults and 715 say they believe in UFOs. Consider the sample proportion,…

Q: confidence interval for the proportion of college students who have texted during class was found to…

A: Given

Q: Find a 95% confidence interval

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Q: If n = 230 and X = 184, construct a 99% confidence interval for the population proportion, p.Give…

A: Given data n = 230 x = 184 sample proportion

Q: We would like to know: "What percentage of college students read the college newspaper every day?"…

A: It is provided that there is random sample of 500 college students in which 231 students said that…

Q: 11) In a Gallup poll, 1011 adults were asked if they consume alcoholic beverages and 64% of them…

A: (11) Obtain the 90% confidence interval estimate of the proportion of all adults who consume…

Q: Construct a 95​% confidence interval to estimate the population mean when x=133 and s​ = 35 for…

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Q: What is the impact on the confidence interval estimate if a larger sample is used?

A: Confidence interval:

Q: Construct a 95​% confidence interval of the population proportion using the given information.…

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Q: is 10. Construct a 96% confidence interval to estimate the population mean. What is the point…

A: Here n = 37 N =200 X bar = 68

Q: If n = 250 and X = 200, construct a 99% confidence interval for the population proportion, p. Give…

A: As given, n = 250 and x = 200.  It is asked to construct a 99% confidence interval for the…

Q: A health insurance firm wants to estimate the proportion of a population that would receive the flu…

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Q: If n = 330 and X = 264, construct a 95% confidence interval for the population proportion, p. %3D…

A: From the provided information, Confidence level = 95% Sample size (n) = 330, x = 264 Sample…

Q: If n = 530 and X = 424, construct a 99% confidence interval for the population proportion, p. Give…

A: Given that, n = 530 x = 424 Point estimate = sample proportion =  = x / n = 424 /530=0.8 1 -  =…

Q: Identify the t-score for a 90% confidence interval if the sample size is 31. t =

A: c1=90%n=31α=1-0.90=0.10df=n-1=31-1=30

Q: Construct a 95% confidence interval estimate. How does this change your answer to (b)?

A: (d)

Q: construct a 98% confidence interval for o².

A: Given:  Sample size n=20  Sample mean (xbar)= 170 and sample  varience s2=16   data is normally…

Q: Explain the steps in computing a confidence interval for ρ?

A: Introduction: The steps to construct a confidence interval in general are: Identify a sample…

Q: If n = 180 and X = 144, construct a 99% confidence interval for the population proportion, p. Give…

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Q: What is the 90% confidence interval of the mean?

A: A confidence interval is an interval that has the property that is very likely that the population…

Q: What is A confidence interval for μ?

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Q: What happens in a confidence interval if the size of the sample increases the length of interval

A: WIdth of a confidence interval = W Margin of error = E

Q: A research institute poll asked respondents if they felt vulnerable to identify a theft. In the poll…

A: Given,n=1000x=501p^=xnp^=5011000=0.5011-p^=1-0.501=0.499α=1-0.99=0.01α2=0.005Z0.005=2.58    (from…

Q: onstruct a 95 confidence interval for p.

A: Here use confidence interval for proportion

Q: State the equation for the 95% confidence interval?

A: The equation for confidence interval can be stated as: Here x̅ is the sample mean, Zα/2 is the…

Q: if you increase the sample size and confidence level at the same time. what will happen to the width…

A: The formula for the confidence interval (say) for population mean is :  C.I= x ± zα/2.s2n As the…

Q: If n = 520 and X = 416, construct a 99% confidence interval for the population proportion, p. Give…

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Q: Construct a 90​% confidence interval of the population proportion using the given information.…

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Q: If n = 440 and X = 352, construct a 90% confidence interval for the population proportion, p. Give…

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Q: What is the difference between the different confidence interval formulas?

A: Confidence interval is the estimate of the interval of an unknown population parameter. It provides…

Q: What would answer be at 99% confidence interval?

A: We have given that,  Sample proportion (p̂) = 64% = 0.64 and sample size (n) = 550 Then,  We will…

Q: Construct a 90% confidence interval for the mean when x̅=50 and there are 31 observations. Suppose…

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Q: 1. How can you make a 95% confidence interval smaller without changing the confidence level?

A: Confidence interval is an interval such that the probability of the unknown parameter to be included…

Q: If n = 480 and ˆpp^ (p-hat) = 0.35, construct a 95% confidence interval. Give your answers to three…

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Q: A 90% confidence interval for a population mean is (10, 20). What is the margin of error of the…

A: Given  alpha=0.10,  CI=(10,20)

Q: Construct a 99% confidence interval for the population proportion

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Q: What is meant by saying that a 1−α confidence interval is a. exact? b. approximately correct?

A: a) 1−α confidence interval is Exact means that the probability that the unknown value of population…

Q: If n = 550 and X = 440, construct a 90% confidence interval for the population proportion, p. Give…

A: Given information:Total number of trials (n) = 550Number of success (X) = 440Confidence level = 0.90

Q: The owner of the Gas station wishes to determine the proportion of customers who use credit card. he…

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Q: What two conditions will result in the use of the student-t distribution when constructing a…

A: Confidence interval for mean: When the sample size is large (n&gt;30) and population variance (or…

Q: What is the 95% confidence interval for population proportion?

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Q: Find the 95% confidence interval.

A: here from given information   pcs^ = 0.85 pcg^ = 0.75 ncs = 100   , ncg = 160

Q: What is a confidence interval

A: The confidence interval in statistics is a type of estimation computed from the statistics of the…

Q: State the assumptions for computing a confidence interval on the difference between means?

A: Solution: Suppose that there are two populations. In order to estimate the difference between the…

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.