Out of 200 people sampled, 82 had kids. Based on this, construct a 90% confidence interval for the true population proportion of people with kids. Give your answers as decimals, to three places ___< p < ___

Q: The expected value without sample information is 10. The expected value with perfect information is…

A: Given data The expected value without sample information is 10 The expected value with perfect…

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A:

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A: The data is x y 3 16.4 4 14.66 5 13.32 6 10.98 7 6.04 8 7

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A: We have given that  Two Box plot boxplot for data set A and boxplot for data set B We have to…

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A: If null hypothesis is rejected at 5% level of significance it means the p-value is less than 0.05…

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A: Given: μ=2.1σ=0.9 The proportion of families having no children, p is 0.18 Sample size, n is 100

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A: Given  α=0.005,μ=55.9, n=21, M=60.1, s=13.6

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A: Given claim: There is a difference in the number of shoplifting incidents before and after the…

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A: Inferential statistic is used to analysis the data by applying some statistical methods. Inferential…

Q: Ten students independently performed an experiment to estimate the value on . Their results were:…

A: Given: Sample size n = 10 ∑X2 = 97.0011 Formula Used: Sample mean X = ∑Xin Sample variance s2 =…

Q: A new drug, Drug X, is being tested in a clinical trial to treat patients with high blood pressure.…

A: Answer given in the steps below.

Q: A magazine collects data each year on the price of a hamburger in a certain fast food restaurant in…

A: From the provided information, Sample size (n) = 12 Level of significance (α) = 0.05

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A:

Q: You intend to conduct a goodness-of-fit test for a multinomial distribution with 7 categories. You…

A: Given that N =  7 Df = N-1

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A: Relative frequency: Relative frequency of a class is the ratio of number of occurrences of a class…

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A:

Q: Students in a representative sample of 65 first-year students selected from a large university in…

A: Given datamean=37.1standard deviation=6.46confidence interval is 95%n=65

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A: As per our guidelines we are supposed to answer only 3 sub-parts of any questions so i am solving…

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A: The question is about poisson dist. Given : Mean rate of message arrive ( λ ) = 5 per hour   To find…

Q: Suppose that IQ scores have a bell shape distribution with a mean of 105 and a standard deviation at…

A: Solution: Let X represent the IQ scores of students.  The distribution of X is bell shape…

Q: Sales at a fast-food restaurant average $6,000 per day. The restaurant decided to introduce an…

A: GivenMean(x)=6300standard deviation(σ)=1000sample size(n)=49sinificance level(α)=0.05

Q: A sample of 150 married women determined that 127 are happy in their marriage. A sample of 150…

A: Given that  n = 150 , X = 127 , p = 76% = 0.76

Q: wish to test the following claim (Ha) at a significance level ofα=0.02.       Ho:μ=65.3…

A:

Q: A poll was conducted to investigate opinions about global warming. The respondents who answered yes…

A: Given  Test statistic=0.474, level of significance ɑ=0.01

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A: Given,

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A: Hypotheses: H0: μ1=μ2=μ3H1: At least one μ is different

Q: A clinical trial was conducted to test the effectiveness of a drug for treating insomnia in older…

A: Solution: Given information: n=15 Sample size  x= 79.2 Sample mean s= 23.1 Sample standard deviation…

Q: The rejection region on a right-sided test with CV = 2.45 is   Group of answer choices (-infinity,…

A: GivenCritical value(CV)=2.45Test is right tailed test

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A: Given data,n=13α=0.02df=n-1=12t-critical value =?

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

A:

Q: how many water specimens are required in the sample

A: It is given that  Population standard deviation, σ = 3.2 Margin of error, E = 2 Confidence interval…

Q: QUESTION 6 If the sample standard deviation is equal to 25.20 and the sample size is 60, what is the…

A: Given Information: Sample standard deviation s=25.20 Sample size n=60 Confidence level is 95%…

Q: Test the claim about the population mean, p, at the given level of significance using the given…

A: Given that  Sample size n =68 Sample mean =48.6 Population standard deviation =3.15

Q: Suppose a population has a mean weight of μ = 79.676 kg  and a standard deviation of σ=22.4943. For…

A: The mean is 79.676 and the standard deviation is 22.4943.

Q: A regression was run to determine if there is a relationship between hours of TV watched per day (x)…

A: Answer and explanation given in steps below  Thanks!

Q: Determine the area under the standard normal curve that lies to the left of ​(a) Z=−0.68, ​(b)…

A: Given data To determine the area under the standard normal curve that lies to the left of ​(a)…

Q: An automobile manufacturer who wishes to advertise that one of its models achieves 30 mpg (miles per…

A: From the provided information, Sample size (n) = 6 Level of significance (α) = 0.05

Q: The following data related the rubber percentage of two types of rubber plants, where the sample…

A:

Q: You determined there was a positive correlation between the number of study hours a week a student…

A: Given regression equation isy=2.079x+41If x=14y=?

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A:

Q: For 50 randomly selected speed dates, attractiveness ratings by males of their female date partnerS…

A: The p-value is 0.046.

Q: Express the confidence interval (69.4%,76.6%)) in the form of ˆp ± ME. __% ± __%

A: Given,confidence interval=(69.4%  ,  76.6%)

Q: For a normally distributed random variable, the population mean is 4.32 and population standard…

A:

Q: The number of fire calls in a day at a fire department is recorded for 100 randomly selected days.…

A: Given: Number of calls Number of days 0 15 1 20 2 17 3 21 4 9 5 10 6 8   100…

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A: Given that Population proportion=0.15 Sample size (n)=381 Number of them repeat offender (X)=46…

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A: Given data table..  We have to find out given probability

Q: Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard…

A:

Q: How do I apply a normal curve to a sample of test scores.  n=50 range=27 min=72 max=99 mean=85.94…

A: Given information: The descriptive statistics for the sample of test scores is given.

Q: The confidence interval is reported as follows: Lower 95% CI < p < Upper 95% CI For this question…

A: Answer and calculation given in steps below. Thanks!