A survey of 1000 people was conducted. 44% said they found it hard to adopt a child in the US. margin of sampling is + or - 3%. with a 95% confidence level. Use the margin of error for a confidence interval estimate. Whart population parameter are we estimating for this sample statistic

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A: T is the time from birth until death of a randomly selected member of a population.T has a Gamma…

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A: The graph represents a Bayesian network with each variable to be binary.There are 8 observations.

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A: The question is about normal approximation.Given :Population proportion of adults with high blood…

Q: According to a 2009 Reader's Digest article, people throw away about 8% of what they buy at the…

A: n=78, p=8%

Q: Assume a member is selected at random from the population represented by the graph. Find the…

A: We have given a standard normal distribution curve with-Population mean μ = 19.6Population standard…

Q: Auto Loans-George works for a credit union that serves a large, urban area. For his annual report,…

A: confidence level 90%=0.90Level of significance Margin error E=0.13

Q: Need help with questiones D E F please

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A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: (4) A research study uses 800 men under the age of 55. Suppose that 30% of them carry a marker on…

A: Let's solve these step by step:(a) Probability that one randomly selected man has the marker:Given…

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Q: A random sample of 130130 observations produced a mean of ?=30.2x¯=30.2 from a population with a…

A: At 95% critical value of z is 1.96. . From z table

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A: The data on restaurant car arrival frequency is given as…

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A: There is 20% chance of completing the phone survey

Q: A statistical program is recommended. Consider the following data for a dependent variable y and two…

A: I used R-software for calculations.1> x1=c(30,47,25,51,40,51,74,36,59,76) 2>…

Q: 45? Click here to view page 1 of the Cumulative Standardized Normal Table. Click here to view page 2…

A: μ=60,σ=26,N=200,n=45

Q: Find the lower quartile of ages Find the upper quartile of the ages Find the 60th percentile of…

A: Given, data  - 31435623424233614428483844354064524247395327363520The questions need to be answered.

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A: The table listing the number of vacation days used by each employee in the last several years is as…

Q: A medical researcher wants to investigate the amount of time it takes for patients' headache pain to…

A: Given:         Standard Deviation σ = 24         Confidence Level (c) = 92 % = 0.92         Margin…

Q: A marketing researcher is hired by a corporation to conduct a study and estimate the population mean…

A: It is required to determine whether the researcher has sufficient funds to conduct the study.

Q: (4.20 Purchasing digital devices for children. Refer to the PC Magazine (December 2019) article on…

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A: Population standard deviation()=0.62Sample size(n)=36

Q: Determine the sample size required to estimate a population mean to within 11 units given that the…

A: 1)Margin of error=11Population standard deviation=105NOTE: according to bartleby guidelines expert…

Q: Suppose you toss a coin 100 times and get 61 heads and 39 tails. Based on these results, what is the…

A: Given that, When we tossed a coin 100 times, we got 69 heads and 31 tails.

Q: (a) Find the P - value for the test statistic z=1.36 for the following null and alternative…

A: a) The null and alternative hypotheses are Ho: The population mean is 16Ha: The population mean is…

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A: Let X be the random variableGiven, X follows normal with µ=1.2 and σ=0.14

Q: A marketing survey is conducted in which students are to taste two different brands of soft drink.…

A: We have given thatn = 190P = 0.50Here we have to solve part (c)

Q: Let z be a standard normal random variable with mean ? = 0 and standard deviation ? = 1. Use Table 3…

A: the probability to the right of -1.89

Q: Female 17 3 8 Total 31 9 12 28 52 If one student is chosen at random, Find the probability that the…

A: It is given that the data in cross tabulation form represents the test to a group of students, the…

Q: An engineer wants to determine how the weight of a car, x, affects gas mileage. y. The following…

A: CarABCDEWeight(pounds),x25502900349536504230Mile per Gallon,y26.625.12519.115.9Explanatory variable…

Q: 27 Solar energy cells. According to Energy Trend (January 2019), 38% of the solar energy cells…

A: The sample size of solar energy cells, n = 5Let X be the random variable that denotes the number of…

Q: What proportion of cars are driving between 75 and 85 miles per hour?

A: We have given that

Q: • the 90% Cl for mu [Select] • the 95% CI for mu [Select] • the 99% CI for mu [Select] V include 3…

A: Given that,Population mean P-value = 0.13Confidence levels:

Q: 7. Given below a list of the weights of 20 students from GUST 97, 67, 72, 79, 83, 83, 51, 59, 65,…

A: 97, 67, 72, 79, 83, 83, 51, 59, 65, 72, 75, 90, 80, 85, 58, 51, 97, 63, 62, 97

Q: 236. A sample of the number of study hours per week of college students is collected. Some of the…

A: The sample results of the survey are given as Study hoursZ-score percentile…

Q: How many trout were less than 20 inches long? Hint: 20 inches is the upper quartile of the box-and-…

A:

Q: Suppose a random sample of 4949 measurements is selected from a population with mean 6060 and…

A: We have given thatMean() = 60Standard deviation() = 10Sample size (n) = 49

Q: Problem #2 Consider the discrete joint density defined in the table at right. The entries in the…

A: The discrete joint density, Pxy(x,y)  defined as follows x=2x=3y=00.20.2y=10.50.1To find:A. The…

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step…

A: A sample of 549 tankers is drawn of which 98 had spills.

Q: Refer to the sorted data speeds below. Find the 40th percentile, denoted by P40.​ 15.9​ 19.3​…

A: 15.9,19.3,19.4,20,20.1,21.0,21.0,21.6,21.6,23.2,24.5,24.6,24.8,25.5,25.8,25.8,25.9,26.1,26.1,26.7,27…

Q: sample 120 R 200 individuals who are currently employed is asked if they work at home at least once…

A: n=200x=37

Q: For each of the following residual plots against the predicted value, state which assumptions, if…

A: It is required to identify the assumptions of a normal error simple linear regression model that are…

Q: Find the minimum sample size required to estimate the mean pulse rate of adult females in  order to…

A: confidence level=90%Margin of error(E)=4standard deviation()=8.5

Q: Thickness measurements of ancient prehistoric Native American pot shards discovered in a Hopi…

A: Mean()=4.8Standard deviation()=1.6

Q: In an early home game, an NBA team made 66 of their 100 free throw attempts. In one of their last…

A: The given information is,Early Home GameLast Home gameNumber of attempts madeNumber of free throw…

Q: In a survey of 1016 adults, a polling agency asked, "When you retire, do you think you will have…

A: Sample size n =1016Favorable cases x =533confidence level=90%Sample proportion()=

Q: How do you do these calculations without using excel?

A: Given data…

Q: A company studied the number of lost-time accidents occurring at its Brownsville, Texas, plant.…

A: The percentage of employees who suffered lost time in accidents  last year was 6%The percentage of…

Q: 16. Use the given probability value to determine whether the sample results could easily occur by…

A: The sample size, n=104The number of pregnant women correctly predicted the gender of their baby =…