answer the following, a. find the t score taht would be used to be 90% confident...

answer the following,

a. find the t score taht would be used to be 90% confident with a sample size of n=5.

b. find the t score that cuts off the upper 2.5% of the distribution used instead of the z distribution

Expert Solution

a) t score = t_0.05,4 = 2.132

b) t score = t_0.025,4 = 2.777

orchestra answered 2 years ago

They main goal is to find either a Z score or T score for the data...

They main goal is to find either a Z score or T score for the data below What is the population mean and the sample mean for the elevations (in feet) of the trails below: Mount Chocorua via Liberty Trail: 2,502 feet of elevation gain Welch-Dickey Loop: 1,807 feet of elevation gain Lonesome Lake Trail: 1,040 feet of elevation gain Mount Willard: 985 feet of elevation gain Red Hill Fire Tower: 1,350 feet of elevation gain Pack Monadnock: 840 feet...

1. An analyst find that the t-score for a statistical comparison of the average number of...

1. An analyst find that the t-score for a statistical comparison of the average number of citations issued between two groups of officers issued is 3.45 with a statistical significance of .09. The analyst should conclude: A. That there is no differnece in the average number of citations issued between the two groups of officers. B. That there is a difference in the average number of citations issued between the two groups of officers. C. Nothing, this is not an...

In what real life research situations would you use a z-score? t-score? when would we know...

In what real life research situations would you use a z-score? t-score? when would we know the population standard deviation? When would we not know the population standard deviation?

Find the critical z-score value for each of the following confidence levels. Give each answer to...

Find the critical z-score value for each of the following confidence levels. Give each answer to at least three decimal places. The z-critical value for a 95% confidence level is: equation editor Equation Editor The z-critical value for an 80% confidence level is: equation editor Equation Editor The z-critical value for a 99% confidence level is: equation editor Equation Editor The z-critical value for a 92% confidence level is: equation editor Equation Editor The z-critical value for a 75% confidence...

Find the z-score that gives an area to the right of it .985 Group of answer...

Find the z-score that gives an area to the right of it .985 Group of answer choices 1.015 -2.17 2.17 .015

Find the 90% confidence interval for the mean TOEFL score from 5 randomly chosen graduate school...

Find the 90% confidence interval for the mean TOEFL score from 5 randomly chosen graduate school applicants. Scores were normally distributed with unknown standard deviation -> 5 TOEFL score: 550 590 490 480 510

This week’s 90-day T-bill rate is 2.8%, the average S&P return is 9.8%. Answer the following:...

This week’s 90-day T-bill rate is 2.8%, the average S&P return is 9.8%. Answer the following: What is the value of the intercept term and the slope? What is the stock’s risk premium? What is the market risk premium? Write the CAPM equation using the above data.

Using the t-table, please find the t-value for 90% confidence and nu space equals space 9?...

Using the t-table, please find the t-value for 90% confidence and nu space equals space 9? 1.833?

A) Assume that a sample is used to estimate a population proportion p. Find the 90%...

A) Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval for a sample of size 246 with 64% successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. = B) Assume that a sample is used to estimate a population proportion p. Find the 95% confidence interval for a sample of size 160 with 62% successes. Enter your answer as an open-interval (i.e.,...

A)Assume that a sample is used to estimate a population proportion p. Find the 90% confidence...

A)Assume that a sample is used to estimate a population proportion p. Find the 90% confidence interval for a sample of size 157 with 54 successes. Enter your answer as an open-interval (i.e., parentheses) using decimals (not percents) accurate to three decimal places. C.I. = B) Assume that a sample is used to estimate a population proportion p. Find the 99.9% confidence interval for a sample of size 142 with 65 successes. Enter your answer as a tri-linear inequality using...

Question