Question

In: Statistics and Probability

​a) The critical value of t for a 99% confidence interval with df equals=88. ​b) The...

​a) The critical value of t for a 99% confidence interval with df equals=88.

​b) The critical value of t for a 90​% confidence interval with df equals=107.

Solutions

Expert Solution

a) Critical value = t0.005,88 = 2.633

b) Critical value = t0.05,107 = 1.659

                                                                                                                                                                                          


Related Solutions

What is the critical value t* for a 99% confidence interval when n = 20?
What is the critical value t* for a 99% confidence interval when n = 20?
Part 1. For a 95% confidence interval for u when df = 19, the t-critical value...
Part 1. For a 95% confidence interval for u when df = 19, the t-critical value is _______ Part 2: For a 90% confidence interval for u when df = 19, the t-critical value is _______ Part 3: For a 99% confidence interval for u when df = 19, the t-critical value is _______ Part 4: For a 95% confidence interval for u when df = 42, the t-critical value is _______ Part 5: For a 99% confidence interval for...
99% confidence interval of the difference (Height in feet) F Sig. t df Sig. (2-tailed) Mean...
99% confidence interval of the difference (Height in feet) F Sig. t df Sig. (2-tailed) Mean difference Std. Error difference Lower upper Equal variances assumed 2.854 .091 -1.608 3573 .108 -.032 .020 -.082 .019 International Student N Mean Std. Deviation Std. Error Mean No 3280 5.05 .322 .006 Yes 295 5.09 .328 .019 This question has 10 parts. Each of the 10 parts (Part A - Part J) has a dropdown list of possible answers. Choose the best answer from...
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 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
If the critical t-value for a confidence interval calculation was 2.756, how big was the sample?
If the critical t-value for a confidence interval calculation was 2.756, how big was the sample?
Determine the t critical value for a two-sided confidence interval in each of the following situations.
 Determine the t critical value for a two-sided confidence interval in each of the following situations. (Round your answers to three decimal places.) (a) Confidence level = 95%, df = 5 (b) Confidence level = 95%, df = 10 (c) Confidence level = 99%, df = 10 (d) Confidence level = 99%, n = 10 (e) Confidence level = 98%, df = 22 (f) Confidence level = 99%, n = 36 You may need to use the appropriate table in the Appendix of Tables to answer this...
Find the critical value t/α2 needed to construct a confidence interval of the given level with...
Find the critical value t/α2 needed to construct a confidence interval of the given level with the given sample size. Round the answers to three decimal places. (a) For level   99% and sample size   9 (b) For level   99.5% and sample size   14 (c) For level   80% and sample size   29 (d) For level   90% and sample size   11
What critical value t* from Table C would you use for a confidence interval for the...
What critical value t* from Table C would you use for a confidence interval for the mean of the population in each of the following situations? A 80 % confidence interval based on n = 20 observations
What critical value t* from Table C would you use for a confidence interval for the...
What critical value t* from Table C would you use for a confidence interval for the mean of the population in each of the following situations? (Use 3 decimal places.) (a) A 95% confidence interval based on n = 15 observations. t* = (b) A 99% confidence interval from an SRS of 29 observations. t* = (c) A 80% confidence interval from a sample of size 9. t* =
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT