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Question 9 1 pts Assume that the data has...
Please answer all 3 questions 10. Question 12 1 pts In a poker game there is...
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Question 12 1 pts In a poker game there is a 68% chance that you will earn a $100 profit on a certain $20 bet, and there is a 32% chance you will lose your $20 bet. What is the expected value for this bet? O $29 O $32.50 $61.60 0 $74.4 0-$36 0. None of these and open/use click the little magnify icon) the following 5 for this exam: z-table and t-table, a...
Question 3 10 points Use the given degree of confidence and sample data to construct a...
Question 3 10 points Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. n = 56, X = 30; 95% confidence O 0.425 < p < 0.647 0.404 <p <0.668 0.405 <p <0.667 0.426 <p <0.646 Question 7 10 points Save Answer Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round...
1) For the following prompts, choose either INCREASE, DECREASE, OR UNCERTAIN to correctly complete the sentences....
1) For the following prompts, choose either INCREASE, DECREASE, OR UNCERTAIN to correctly complete the sentences. (3pts each) a. All else held constant, an increase in the sample size will the margin of error of a confidence interval of u when the population parameter o is unknown. b. When testing a hypothesis using the "critical z approach", an increase in the value of a will the critical z value, holding everything else constant. C. All else held constant, an increase...
page 1 M155/Beebe/S19 TEST 3 MULTIPLE CHOICE. Choose the one alternative that best completes the statement...
page 1 M155/Beebe/S19 TEST 3 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 5 POINTS APIECE. (Circle answers.) For problems 1 and 2, do one of the following, as appropriate, to calculate a confidence interval for the given confidence level: (a) find the critical value za/2. (b) find the critical value ta/2, or (c) state that neither the normal or t distribution applies. PROBLEM 1 . Confidence level 91%; n-45; ơ is known;...
Please answer all Question 36 1 pts A shipping firm suspects that the mean lifetime of...
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Question 36 1 pts A shipping firm suspects that the mean lifetime of the tires used by its trucks is less than 35,000 miles. To check the claim, the firm randomly selects and tests 54 of these tires and gets a mean lifetime of 34,570 miles with a standard deviation of 1200 miles. At a = 0.05, test the shipping firm's claim. test statistic -2.63; critical value = -1.645; do not reject Ho: There is sufficient evidence...
1. A sample size of n-20 is a simple random sample selected from a normally distributed...
1. A sample size of n-20 is a simple random sample selected from a normally distributed population. Find the critical value ta2 corresponding to a 95% confidence level. 2.093 O 2.086 02.861 1.960 2. Assume you want to construct a 90% confidence interval from sample of a distributed population. The sample size is 37. Find the critical value to2 1.687 2.719 1.688 O1.645 3. You are constructing a 95% confidence interval of a sample space consisting of n = 40...
6. A sample of size n- 200 has a known population standard deviation of 15.0. The...
6. A sample of size n- 200 has a known population standard deviation of 15.0. The population appears to be skewed. Determine whether a margin of error should be calculated using a critical value of za, a critical value of ta/2, or neither. Oa critical value of ta2 O a critical value of za O neither 7. The mean of a sample size n 35 is 1860. The standard deviation of the sample is 102 and the population is normally...
answer questions 1 and 2 please Statis Find the critical value SELECT ALL APPLIC A) 0.412...
answer questions 1 and 2 please
Statis Find the critical value SELECT ALL APPLIC A) 0.412 B) 0.922 Xi C) 16.75 D) 1.078 corresponding to a sample size of 6 and a confidence level of 99.0 percent A. Determine the corresponding z values for a 92.5 percent confidence interval. SELECT ALL APPLICA A) B) Za/21.78 2a/2-1.7 C) D) Za/2 = ±-1.82 ta/2-1.85 0.11 92.5% E) F) None of These Za/2 = ±-1.72 Of 649 adults selected randomly from one SELECT...
3. Using the t-distribution table posted on Moodle, find the df & critical t-values given N...
3. Using the t-distribution table posted on Moodle, find the df & critical t-values given N & the confidence level: N 30, 90% confidence level b. N 17, 90% confidence level c. N 23, 95% confidence level d. N 42, 99% confidence level e. N o 1,95% confidence level a. t-distribution Table TABLE D Thet distribution* Confidence interval percents (two-tailed) 80% 90% 95% 98% 99% 99.9% a level for two-tailed test 20 .10 .05 02 01 .001 a level for...
(i point) 6. Give a correct interpretation of a 99% confidence level of 0 102 <p...
(i point) 6. Give a correct interpretation of a 99% confidence level of 0 102 <p < 0 236, alue of the population proportio We are 99% confident that the interval from 0 102 to 0.236 actually does contain the tru O There is a 99% chance that the true value ofp will fall between 0 i 02 and 0236. 99% of sample proportions fall between 0 102 and 0 236 o we are confident that 99% of values between...
Please answer all 3 questions
10.
Question 12 1 pts In a poker game there is a 68% chance that you will earn a $100 profit on a certain $20 bet, and there is a 32% chance you will lose your $20 bet. What is the expected value for this bet? O $29 O $32.50 $61.60 0 $74.4 0-$36 0. None of these and open/use click the little magnify icon) the following 5 for this exam: z-table and t-table, a...
Question 3 10 points Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. n = 56, X = 30; 95% confidence O 0.425 < p < 0.647 0.404 <p <0.668 0.405 <p <0.667 0.426 <p <0.646 Question 7 10 points Save Answer Assume that a sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. Round...
1) For the following prompts, choose either INCREASE, DECREASE, OR UNCERTAIN to correctly complete the sentences. (3pts each) a. All else held constant, an increase in the sample size will the margin of error of a confidence interval of u when the population parameter o is unknown. b. When testing a hypothesis using the "critical z approach", an increase in the value of a will the critical z value, holding everything else constant. C. All else held constant, an increase...
page 1 M155/Beebe/S19 TEST 3 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 5 POINTS APIECE. (Circle answers.) For problems 1 and 2, do one of the following, as appropriate, to calculate a confidence interval for the given confidence level: (a) find the critical value za/2. (b) find the critical value ta/2, or (c) state that neither the normal or t distribution applies. PROBLEM 1 . Confidence level 91%; n-45; ơ is known;...
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Question 36 1 pts A shipping firm suspects that the mean lifetime of the tires used by its trucks is less than 35,000 miles. To check the claim, the firm randomly selects and tests 54 of these tires and gets a mean lifetime of 34,570 miles with a standard deviation of 1200 miles. At a = 0.05, test the shipping firm's claim. test statistic -2.63; critical value = -1.645; do not reject Ho: There is sufficient evidence...
1. A sample size of n-20 is a simple random sample selected from a normally distributed population. Find the critical value ta2 corresponding to a 95% confidence level. 2.093 O 2.086 02.861 1.960 2. Assume you want to construct a 90% confidence interval from sample of a distributed population. The sample size is 37. Find the critical value to2 1.687 2.719 1.688 O1.645 3. You are constructing a 95% confidence interval of a sample space consisting of n = 40...
6. A sample of size n- 200 has a known population standard deviation of 15.0. The population appears to be skewed. Determine whether a margin of error should be calculated using a critical value of za, a critical value of ta/2, or neither. Oa critical value of ta2 O a critical value of za O neither 7. The mean of a sample size n 35 is 1860. The standard deviation of the sample is 102 and the population is normally...
answer questions 1 and 2 please
Statis Find the critical value SELECT ALL APPLIC A) 0.412 B) 0.922 Xi C) 16.75 D) 1.078 corresponding to a sample size of 6 and a confidence level of 99.0 percent A. Determine the corresponding z values for a 92.5 percent confidence interval. SELECT ALL APPLICA A) B) Za/21.78 2a/2-1.7 C) D) Za/2 = ±-1.82 ta/2-1.85 0.11 92.5% E) F) None of These Za/2 = ±-1.72 Of 649 adults selected randomly from one SELECT...
3. Using the t-distribution table posted on Moodle, find the df & critical t-values given N & the confidence level: N 30, 90% confidence level b. N 17, 90% confidence level c. N 23, 95% confidence level d. N 42, 99% confidence level e. N o 1,95% confidence level a. t-distribution Table TABLE D Thet distribution* Confidence interval percents (two-tailed) 80% 90% 95% 98% 99% 99.9% a level for two-tailed test 20 .10 .05 02 01 .001 a level for...
(i point) 6. Give a correct interpretation of a 99% confidence level of 0 102 <p < 0 236, alue of the population proportio We are 99% confident that the interval from 0 102 to 0.236 actually does contain the tru O There is a 99% chance that the true value ofp will fall between 0 i 02 and 0236. 99% of sample proportions fall between 0 102 and 0 236 o we are confident that 99% of values between...
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