13. help pls Step 1(a) Construct a 95% confidence interval estimate of p, the mean procrastination scale for first-year students at this college.There are two methods that can be used when constructing a confidence interval for a population mean .When the population standard deviation is known, the sample mean x is from a simple random sample, and the sample size n is large (generally nz 30), the confidence interval can be constructed using a z critical value.However, if the population standard deviation is unknown, a confidence interval can still be constructed so long as the sample mean x is from a simple random sample, the sample size n is large (generally n 2 30) or the population distribution is normal. In this case, a isestimated using the sample standard deviations and the confidence interval will be constructed using a t critical value.from a simple random sample and the sample size ---Select-sufficiently large. It is given that the standard deviation for the 65 first-year students in the study was 6.33. ThisData was collected from a representative sample of 65 students, so the sample mean-Selectstandard deviation is from the --Select-, so a ? critical value will be used. -Select-isis notSubmit Skip (you cannot come back)

Solution: The difference between z confidence and t confidence interval are

(a) Construct a 95% confidence interval estimate of p, the mean procrastination scale for first-year students at this college. There are two methods that can be used when constructing a confidence interval for a population mean . When the population standard deviation or is known, the sample mean is from a simple random sample, and the sample size n is large (generally in 2 30), the confidence interval can be constructed using a critical value. However, if the population standard de d deviation is unknown, a confidence interval can still be constructed so long as the sample mean is from a simple random sample, the sample size n is large (generally n2 30) or the population distribution is normal. In this case, a is estimated using the sample standard deviations and the confidence interval will be constructed using a t critical value. from a simple random sample and the sample size Select-sufficiently large. It is given that the standard deviation for the 65 first-year students in the study was 6.33. This Data was collected from a representative sample of 65 students, so the sample mean -Select standard deviation is from the Select, so a critical value will be used. -Select- Submit Sugiyou cannot come back

(a) Construct a 95% confidence interval estimate of p, the mean procrastination scale for first-year students at this college. There are two methods that can be used when constructing a confidence interval for a population mean . When the population standard deviation or is known, the sample mean is from a simple random sample, and the sample size n is large (generally in 2 30), the confidence interval can be constructed using a critical value. However, if the population standard de d deviation is unknown, a confidence interval can still be constructed so long as the sample mean is from a simple random sample, the sample size n is large (generally n2 30) or the population distribution is normal. In this case, a is estimated using the sample standard deviations and the confidence interval will be constructed using a t critical value. from a simple random sample and the sample size Select-sufficiently large. It is given that the standard deviation for the 65 first-year students in the study was 6.33. This Data was collected from a representative sample of 65 students, so the sample mean -Select standard deviation is from the Select, so a critical value will be used. -Select- Submit Sugiyou cannot come back

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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