what is correct about the confiedence level( describe in few words ) 1 sampling risk is applicable only to variabels sampling 2 the sampling risk of confidence level must be = to 100 % 3 the confidence level must be less greater than 90% , if the sampling risk is 12% 4 sampling risk is normally higher than the confidence sampling .

Q: If you think a data point is an outlier, what test can you perform to see if you should omit the…

A: An outlier in a data set is a value that is significantly large or small compared to the other…

Q: xplain how to find the 95% confidence interval for the mean by hand for one of the data sets in your…

A: As we do not know the population standard deviation, use t-distribution. The degrees of freedom will…

Q: If the standard error of the mean is 10 for n = 100, what must the sample size be to reduce the…

A: Standard error of the mean=E1=10And Sample size n1=100Standard error=E2=5

Q: How to Construct a 99% confidence interval for the true proportion of all workers who believe that…

A: It is given that the sample size (n) is 130 and x is 100.

Q: ​Clearly one would assume that private colleges and universities would have a higher annual total…

A: Given information: The data represents the values of annual total cost of private school and public…

Q: What are the upper and lower limits and the width of CI if you change the confidence level to 99% M…

A: Formula : CI=point estimate ± ME

Q: 4) A simple random sample is to be taken of 572 business majors in a college to estimate the…

A: When we don't have any prior information about population proportion, we generally take it as 0.50.…

Q: how do you calculate 95% confidence interval for the population mean when the sample mean is 15 and…

A: From the given information ,Sample mean , 15Margin of error , E = 3.2We have to find the 95%…

Q: confidence interval for the mean response” and prediction interval” for a New response is.

A: The difference between the " confidence interval for the mean response"  and the prediction interval…

Q: Suppose the true proportion of voters in the county who support a specific candidate is 0.4.…

A: Given that the proportion of voters in the county who support a specific candidate is 0.4 and the…

Q: what are the importance of one sample Inference (Z- test and T-test) and provide examples of how you…

A: The One Sample t Test and One Sample z test are parametric tests.    One - sample T-test :  The…

Q: A physical therapist wants to determine the difference in the proportion of men and women who…

A:

Q: What is the likelihood that a 90% confidence interval will not cover the true population value?…

A:

Q: 7. Same question different problems

A:

Q: Suppose the metroparks want to survey local residents about how they feel about the park system.…

A: Given,margin of error(E)=0.0475Assume sample proportion (p^)=0.5α=1-0.95=0.05α2=0.025Z0.025=1.96…

Q: Explain the situations of independent samples t-test vs. paired-sample t-test?

A: Independent samples t-test vs. paired-sample t-test.

Q: One personality test available on the World Wide Web has a subsection designed to assess the…

A: We have given that Mean(µ) = 140 Sample mean (x̅) = 134 Standard deviations (s) = 28

Q: What type of statistic test would I perform for this questions, Is there a relationship between…

A: Chi-square test:   A single simple random sampling is done with each individual being classified…

Q: What's the below are the amount of net worth (in millions of dollars) of the 10 wealthiest…

A:

Q: I want to estimate the population mean number of times the average pet owner gives their pet(s)…

A: Obtain the 95% confidence interval for the population mean. The 95% confidence interval for the…

Q: When you read an article quoting sampling research do you consider the lack of sufficient…

A: Sampling : In a research or a survey, some units are drawn from the population in which an…

Q: Unlike confidence intervals, hypothesis tests require that some predetermined population value be…

A: The confidence intervals, provide the range where the population mean or parameter will remain in…

Q: Find a 95% confidence interval for the difference between full attendance students' Exam 5 score and…

A: We have given data,  Less attendance Full attendance 90 96 90 96 60 100 50 99 69   88…

Q: If the sample size is increased and the standard deviation and confidence level stay the same, then…

A: Margin of error:The margin of error helps in constructing confidence intervals, which gives a range…

Q: Relative risk is defined to be the ratio of success proportions between two groups. Suppose that a…

A: It is given asThe 95% confidence interval for relative risk is:CI = ( 1.32, 2.62 )

Q: Okay so i am a little confused. So would the most appropriate statistical test be single means t…

A: Given that Most appropriate test for prediction

Q: he role of chance does require that we consider the significance of differences

A: A statistically significant difference is a result that is unlikely to occur by chance alone

Q: The following sample data are from a normal population: 10, 8, 12, 15, 13, 11, 6, 5. What is the…

A:

Q: A packet of garden seeds contains 250 seeds. The information printed on the packet indicates that…

A: Given , n = 250

Q: What sample size is needed to estimate a population mean within t 70 of the true mean value using a…

A: According to the provided information, Population standard deviation (σ) = 140.625 Confidence level…

Q: how you recognize when an inferential statistics problem involves either a confidence interval…

A:

Q: psychologist would like to estimate the proportion of Americans that say "the future of the nation…

A: It is given that the sample size (n) is 917 and the sample proportion is 0.732.

Q: What is an appropriate statistic to use for whether race/ethnicity (white, person of color) affects…

A: Test is that whether race/ethnicity affects whether or not people feel safe in their neighborhood.

Q: When the results of a survey or a poll are published, the sample size is usually given, as well as…

A: a)   Given that the point estimate is 78% and the margin of error is ≠3%.   Therefore, the…

Q: Why do you need to know the sampling distribution of the difference between two sample means in…

A: In this case, we need to find the reason for identifying the sampling distribution of the difference…

Q: How can someone recognize when an inferential statistics problem involves either a confidence…

A: Confidence interval is used to find the true value of the estimate of population parameter by using…