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D Question 17 0.3 pts What is the critical value za/2 for a 98% level of...
Find the critical value za/2 needed to construct a confidence interval with level 95%.
Find the critical value za/2 needed to construct a confidence interval with level 95%. Round the answer to two decimal places. The critical value for the 95% confidence level is _______ .
a.Construct the confidence interval for the population mea μ. c=0.98 x=16.3, σ=5.0, and n=95 A 98%...
a.Construct the confidence interval for the population mea μ. c=0.98 x=16.3, σ=5.0, and n=95 A 98% confidence interval for μ is ( ___ , ___ ) (Round to one decimal place as needed. b. Find the critical value tc for the confidence level c=0.98 and sample size n=13. tc= _____ (Round to the nearest thousandth as needed.) c. Find the margin of error for the given values of c, s, and n.c=0.80, s=4, n=28 The margin of error is _____...
17. If the confidence level for a confidence interval is 98%. then the error rate α...
17. If the confidence level for a confidence interval is 98%. then the error rate α is ______. a. 98% b. 2% c. 95% d. 5% 18. Suppose the sample mean is μ and the confidence interval for population mean is (μ-E, μ+E). E will be getting smaller if: (18.a) the sample size is getting ___________; a. smaller b. larger (18.b) the standard deviation of the data in the sample is __________; a. smaller b. larger (18.c) the allowed error...
Find the critical value tc for the confidence level c=0.98 and sample size n=17. Round to...
Find the critical value tc for the confidence level c=0.98 and sample size n=17. Round to nearest thousands Find the critical value tc for the confidence level c=0.99 sample size n=9. Round to nearest thousandth.
This Question: 1 pt 12 of 17 ( Find the critical value to for the confidence...
This Question: 1 pt 12 of 17 ( Find the critical value to for the confidence level c = 0.90 and sample size n= 11. Click the icon to view the t-distribution table. t=(Round to the nearest thousandth as needed.)
Question 18 9 pts Based on a sample of size 19, a 98% confidence interval for...
Question 18 9 pts Based on a sample of size 19, a 98% confidence interval for the mean score of all students, p. on an aptitude test is from 79.2 to 94.8. Find the margin of error Question 19 9 pts A group of 75 randomly selected students have a mean score of 25.2 on a placement test. Nationwide, the standard deviation of all students taking the test is 27. This sample data is used to calculate a 90 percent...
Please answer all 3 questions 8. 7. Question 9 1 pts Assume that the data has...
Please answer all 3 questions
8.
7.
Question 9 1 pts Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. a=0.05 for a test of the hypothesis that the mean is greater than or equal to 98. 0 -2.326 0 -1.960 0 -1.645 O +1.645 O 1.960 Find the appropriate critical value (either Za/2 or ta/2) Confidence level = 99% and...
Explain how to find the critical value, T* with a graphing TI-84 calculator. round critical t-Values...
Explain how to find the critical value, T* with a
graphing TI-84 calculator. round critical t-Values to 4 decimal
places
(8 points) Identify the critical t. An independent random sample is selected from an approximately normal population with unknown standard deviation. Find the degrees of freedom and the critical t value t* for the given sample size and confidence level. Round critical t values to 4 decimal places. Critical value, t* Sample size, n Confidence level 19 9 0 24...
ol. Find the critical value a/2 needed to construct a confidence interval of the given level...
ol. Find the critical value a/2 needed to construct a confidence interval of the given level with the given sample size. Round the answers to three decimal places. Part 1 of 4 (a) For level 98% and sample size 8 Critical value = х Part 2 of 4 (b) For level 99% and sample size 13 Critical value = Part 3 of 4 (c) For level 99.5% and sample size 28 Critical value = Part 4 of 4 (d) For...
14) Find critical values. a) Find the value from table for the indicated confidence level (by...
14) Find critical values. a) Find the value from table for the indicated confidence level (by using A-2 table). Draw the curve and show all of your work, like we did in the classroom 80% 85% b) Find the value from Table A - 3 for the indicated confidence level and sample size. 95% confidence and n=19 98% confidence and n-22 c) Find the critical values Xi and X(by using A-4 table) that correspond to the given confidence level and...
This Question: 1 pt 12 of 17 ( Find the critical value to for the confidence level c = 0.90 and sample size n= 11. Click the icon to view the t-distribution table. t=(Round to the nearest thousandth as needed.)
Question 18 9 pts Based on a sample of size 19, a 98% confidence interval for the mean score of all students, p. on an aptitude test is from 79.2 to 94.8. Find the margin of error Question 19 9 pts A group of 75 randomly selected students have a mean score of 25.2 on a placement test. Nationwide, the standard deviation of all students taking the test is 27. This sample data is used to calculate a 90 percent...
Please answer all 3 questions
8.
7.
Question 9 1 pts Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z value used to test a null hypothesis. a=0.05 for a test of the hypothesis that the mean is greater than or equal to 98. 0 -2.326 0 -1.960 0 -1.645 O +1.645 O 1.960 Find the appropriate critical value (either Za/2 or ta/2) Confidence level = 99% and...
Explain how to find the critical value, T* with a
graphing TI-84 calculator. round critical t-Values to 4 decimal
places
(8 points) Identify the critical t. An independent random sample is selected from an approximately normal population with unknown standard deviation. Find the degrees of freedom and the critical t value t* for the given sample size and confidence level. Round critical t values to 4 decimal places. Critical value, t* Sample size, n Confidence level 19 9 0 24...
ol. Find the critical value a/2 needed to construct a confidence interval of the given level with the given sample size. Round the answers to three decimal places. Part 1 of 4 (a) For level 98% and sample size 8 Critical value = х Part 2 of 4 (b) For level 99% and sample size 13 Critical value = Part 3 of 4 (c) For level 99.5% and sample size 28 Critical value = Part 4 of 4 (d) For...
14) Find critical values. a) Find the value from table for the indicated confidence level (by using A-2 table). Draw the curve and show all of your work, like we did in the classroom 80% 85% b) Find the value from Table A - 3 for the indicated confidence level and sample size. 95% confidence and n=19 98% confidence and n-22 c) Find the critical values Xi and X(by using A-4 table) that correspond to the given confidence level and...
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