Find the critical t-value that corresponds to 70% confidence. Assume 22 degrees of freedom.

Expert Solution

Solution:

Given:

c = confidence level = 70% = 0.70

then two tail area = 1 - c = 1 - 0.70 = 0.30

df = 22

Look in t table for df = 22 and two tail area = 0.30 and find t critical value

thus t critical value = 1.061

orchestra answered 1 year ago

Find the critical t-value that corresponds to 95% confidence. Assume 20 degrees of freedom.

Find the critical t-value that corresponds to 98% confidence. Assume 26 degrees of freedom. (Round to...

Find the critical t-value that corresponds to 98% confidence. Assume 26 degrees of freedom. (Round to 3 decimal places as needed.)

The question is: Find the critical t-value that corresponds to 99% confidence. Assume 23 degrees of...

The question is: Find the critical t-value that corresponds to 99% confidence. Assume 23 degrees of freedom (round to 3 decimal places as needed).

Find the critical value of t for a t-distribution with 30 degrees of freedom such that...

Find the critical value of t for a t-distribution with 30 degrees of freedom such that the area between -t and t is 99% A student records the repair costs for 25 randomly selected computers from a local repair shop where he works. A sample mean of $216.53 and standard deviation of $15.86 are subsequently computed. Assume that the population distribution is approximately normal and s is unknown. Determine the 98% confidence interval for the mean repair cost for all...

Find the value of t for a t-distribution with 3 degrees of freedom such that the...

Find the value of t for a t-distribution with 3 degrees of freedom such that the area to the left of t equals 0.10. Possible Answers: A. 5.841 B. 4.541 C. -2.333 D. -1.638

The table t-value associated with 8 degrees of freedom and used to calculate a 99% confidence...

The table t-value associated with 8 degrees of freedom and used to calculate a 99% confidence interval is _______. Select one: a. 3.355 b. 1.860 c. 1.397 d. 2.896 Cameron Sinclair, Information Services Manager with Global Financial Service (GFS), is studying employee use of GFS email for non-business communications. He plans to use a 95% confidence interval estimate of the proportion of email messages that are non-business; he will accept a 0.05 error. Previous studies indicate that approximately 30% of...

Find the critical value of t given the following. t0.05 for a t-distribution with 34 degrees...

Find the critical value of t given the following. t0.05 for a t-distribution with 34 degrees of freedom 1.691 b. 2.728 c. 2.032 d. 2.441 Use the confidence level and sample data to find the margin of error E. Weights of eggs: 90% confidence; n = 40, = 1.54 oz., s = 0.41 oz. 0.107 oz. b. 0.109 oz. c. 0.112 oz. d. 0.030 oz. Use the confidence level and sample data to find a confidence interval for estimating the population μ. Weights of eggs: 90% confidence; n = 40, = 1.54 oz., s = 0.41 oz. 1.433...

QUESTION 1 Using the t-table found HERE find find the t critical value for: Degrees of...

QUESTION 1 Using the t-table found HERE find find the t critical value for: Degrees of Freedom = 5 Upper-tail probability = 0.10 3 points QUESTION 2 Using the t-table found HERE find find the t critical value for: Degrees of Freedom = 11 Upper-tail probability = 0.005 3 points QUESTION 3 Using the t-table found HERE find find the t critical value for: Degrees of Freedom = 23 Upper-tail probability = 0.05 3 points QUESTION 4...

What is the critical value for a chi-square test with 13 degrees of freedom at the...

What is the critical value for a chi-square test with 13 degrees of freedom at the 1 percent level of significance? If the chi-square test statistic were 16.98, what would you conclude regarding the null hypothesis? What would you conclude if the chi-square value were 68.03? (30 points)

Find the critical value t* for the following situations. a) a 95% confidence interval based on...

Find the critical value t* for the following situations. a) a 95% confidence interval based on df=19 b) a 90%confidence interval based on df=9

Question