Statistics

stat questions

CHAPTER 2 2.5 An SRSWOR of size 300 is drawn from a population to estimate the population mean of a characteristic of interest.A 95% Confidence Interval for the population mean based on the sample mean 297897 is(260706,335087). (a)what is the chance for the confidence interval to include the unknown population means? (b)Find the numerical value …

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379 basic prob and stat: including statkey using homework 5

This assignment requires knowledge of the bootstrap confidence interval for man, t interval for the mean; poison confidence interval for lambda using the normal approximation; calculating derivative with respect to z of |z|. See attached files for additional details. file “5” is the assignment, and “ques1” and “ques2” are dataset that would be used in …

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R Code question

Assume that the above 2022 admission data is the population is known Use the R program and the codes given in Lectures and Discussions to answer the questions below l.Points=1 (1 1)=3. (a)What is the numerical value of the population size N? (b)Calculate the population mean and the population variance using the equations (2.8) and …

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How to find IQR given SD and mean.

The distribution of weights of pumpkins from a harvest is approximately normal with a mean of 8.3 pounds and a standard deviation of 1.68 pounds. Find the value of the interquartile range (QR) for the mean of 15 pumpkins. Express the answer as a decimal value rounded to the nearest thousandth.

Instructions: Use the hsbdata.sav file and College Data file from the website included with your textbook’s Support Material, IBM

Instructions: Use the hsbdata.sav file and College Data file from the website included with your textbook’s Support Material, IBM SPSS for Introductory Statistics. Scroll to Student Resources and then click the Data Sets (ZIPS) button and select the file. Complete the following points: 1-Is there a significant difference in mosaic2 between academic tracks? Explain. Provide …

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Module 15 Homework 1 – Distribution of Sample Proportions (12 of 23)

Progress CheckUse this activity to assess whether you and your peers can: Use a simulation to obtain a sampling distribution along with its mean, standard deviation, and error. Interpret the mean and error for a sampling distribution. PromptThe National Health Survey uses household interviews to describe the health-related habits of U.S. adults. From these interviews …

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Find an example of data in the news or on social media and share it in the Discussion Board.

Find an example of data in the news or on social media and share it in the Discussion Board. If you find your data in an online source, please include the link to the source in your post. Describe the type of data in your example, and what questions you have around the validity of …

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Statistics Question

Discuss the assumptions of parametric statistical testing versus the assumptions of nonparametric tests. Discuss why a researcher would select a nonparametric approach based on the data and when they would select parametric tests for their data set. Does it matter what type of variables have been collected in the dataset? Embed course material concepts, principles, …

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Please write the results section for both research question 3 and 4, see attached. Also attached is the data

Please write the results section for both research question 3 and 4, see attached. Also attached is the data file in SPSS for the assignment. Non parametric statistical analysis should be used in finding the results. Please explain the results in detail. For research question 3, I believe that a Wilcoxon test should be ran …

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Statistics Question

Investigation 1: Fairfax County High School Degree or Higher According to the 2020 census conducted by the U.S. Census Bureau, 82.3% of all Fairfax County residents aged 25 or higher has obtained a high school degree or higher. All work for this investigation will be completed in StatKey. a) Create a sampling distribution of 10,000 …

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