4. Given the information for the problems below, calculate the 95% confidence intervals. Report all answers to two decimal places if answer involves decimals. (a) Mean = 120, Standard Deviation = 10,...
4. Given the information for the problems below, calculate the 95% confidence intervals. Report all answers to two decimal places if answer involves decimals.
(a) Mean = 120, Standard Deviation = 10, N = 25
| 95% Confidence Interval | From: | To: |
(b) Mean = 24.29, Standard Deviation = 2.7, N = 140
| 95% Confidence Interval | From: | To: |
(c) Mean = 77.82, Standard Deviation = 5.53, N = 24
| 95% Confidence Interval | From: | To: |
(d) Mean = 10, Standard Deviation = 0.9, N = 5
| 95% Confidence Interval | From: | To: |
(e) Mean = 2.778, Standard Deviation = 1.6, N = 28
| 95% Confidence Interval | From: | To: |
Homework Answers
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4. Given the information for the problems below, calculate the 95% confidence intervals. Report all answers to two decimal places if answer involves decimals. (a) Mean = 120, Standard Deviation = 10,...
You are given the sample mean and the popd tion standard deviation Use this information to...
You are given the sample mean and the popd tion standard deviation Use this information to con truct the 90% and 95% cor lidence intervall th interval From a random sample of 43 business days, the mean closing price of a certain stock was $117.42 Assume the population standard deviation is $10 The 90% confidence interval is Round to two decimal places as 0 Enter your answer in the edit fields and then click Check Answer Clear All remaining Type...
.NEED ANSWER ASAP A.) B.) NEED ANSWERS TO A.) and B.) The mean and standard deviation...
.NEED ANSWER ASAP
A.)
B.)
NEED ANSWERS TO A.) and B.)
The mean and standard deviation of a random sample of n measurements are equal to 33.8 and 3.7, respectively. a. Find a 95% confidence interval for p if n = 144. b. Find a 95% confidence interval for u if n=576. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the...
Question 5 Calculate the two-sided 95% confidence interval for the population standard deviation (sigma) given that...
Question 5 Calculate the two-sided 95% confidence interval for the population standard deviation (sigma) given that a sample of size n=10 yields a sample standard deviation of 12.29. Your answer: O 11.64 < sigma <33.17 8.45 < Sigma <22.44 10.63 < Sigma < 15.74 9.29 < Sigma <23.64 5.28 < sigma <29.78 1.08 < sigma <31.24 11.07 < sigma 16.03 12.20 < Sigma 19.97 14,71 < sigma < 10,43 11.30 < sigma < 13.61
problems 4, 5, 6, 11 and 13 If the population standard deviation was doubled to 10.4...
problems 4, 5, 6, 11 and 13
If the population standard deviation was doubled to 10.4 and the level of confidence remained at 90%, what would be the new margin of error and confidence interval Margin of error, E. Confidence interval: 20.11<x<34.31 O Did the confidence interval increase or decrease and why? increase 4. Definition of Confidence Intervals (Section 6.1) Circle your answer, True of False. • A 99% confidence interval means that there is a 99% probability that the...
step 2: calculate the sample standard deviation from the given sample. round to two decimal places...
step 2: calculate the sample standard deviation from the given
sample. round to two decimal places
step 3: find the critical value that is used in confidence
interval
step 4: construct 80% confidence interval. round to two
decimal place
step 2: find the critical value. round to 3 decimal
place
step 3: find the standard deviation of the paired
differences
step 4:construct 99% confidence interval. round to one decimal
place
A survey of several 9 to 11 year olds recorded...
Part B: (41 points) Problem-Solving Suggestion: Report all final answers to 2 decimal points, carry 3...
Part B: (41 points) Problem-Solving Suggestion: Report all final answers to 2 decimal points, carry 3 decimals for intermediate calculations. 1) The basal or resting heart rate typically has a mean of 70 standard deviation of 10 bpm. A sample of 25 students relaxing before the Bio-stat midterm measured a mea (Hint: first determine if this is a Z-test or t-test... Z-test if Population Std. Dev. Is k beats per minute (bpm) with a n = 75 nown) (6-pts) Construct...
Use the sample data and confidence level given below to complete parts (a) through (d). A...
Use the sample data and confidence level given below to complete parts (a) through (d). A research instituto poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1052 and x 515 who said "yos." Use a 95% confidence level. Click the icon to view a table of z scores. *) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) b) Identify the value of the margin of error...
Using the answers from the table above, answer ALL of the questions below. For questions 1 - 13, draw a normal curve and indicate the area that you are calculating the probability of. For questions...
Using the answers from the table above, answer ALL of
the questions below. For questions 1 - 13, draw a
normal curve and indicate the area that you are calculating the
probability of. For questions 14 – 22, use the
appropriate formulas and show all of your
calculations.
Be sure to turn in the table above along with your
answers to all of the questions below. Place your answers in a
folder with your name clearly written at the top...
24. If the population mean is 0 and the population variance o, 1 (10 points) What...
24. If the population mean is 0 and the population variance o, 1 (10 points) What is the P (z> 3) a. What is the P (z<2) b. What is the P (-1.5<z <3)? c. What is the P (-2.33cz < 1.25)? d. e. What is the P (-2.33<z and >1.25)? 25. If the population mean is 115 and the population variance σ, 100 (10 points) What is the P (z > 120) a. b. What is the P (2<150)?...
Po 5.4.18-T Question Help The population mean and standard deviation are given below. Find the indicated...
Po 5.4.18-T Question Help The population mean and standard deviation are given below. Find the indicated probability and determine whether a sample mean in the given range below would be considered unusual. If convenient, use technology to find the probability For a sample of n-36, find the probability of a sample mean being less than 12,750 or greater than 12,753 when 12,750 and ơ-2.3 For the given sample, the probability of a sample mean being less than 12,750 or greater...
You are given the sample mean and the popd tion standard deviation Use this information to con truct the 90% and 95% cor lidence intervall th interval From a random sample of 43 business days, the mean closing price of a certain stock was $117.42 Assume the population standard deviation is $10 The 90% confidence interval is Round to two decimal places as 0 Enter your answer in the edit fields and then click Check Answer Clear All remaining Type...
.NEED ANSWER ASAP
A.)
B.)
NEED ANSWERS TO A.) and B.)
The mean and standard deviation of a random sample of n measurements are equal to 33.8 and 3.7, respectively. a. Find a 95% confidence interval for p if n = 144. b. Find a 95% confidence interval for u if n=576. c. Find the widths of the confidence intervals found in parts a and b. What is the effect on the width of a confidence interval of quadrupling the...
Question 5 Calculate the two-sided 95% confidence interval for the population standard deviation (sigma) given that a sample of size n=10 yields a sample standard deviation of 12.29. Your answer: O 11.64 < sigma <33.17 8.45 < Sigma <22.44 10.63 < Sigma < 15.74 9.29 < Sigma <23.64 5.28 < sigma <29.78 1.08 < sigma <31.24 11.07 < sigma 16.03 12.20 < Sigma 19.97 14,71 < sigma < 10,43 11.30 < sigma < 13.61
problems 4, 5, 6, 11 and 13
If the population standard deviation was doubled to 10.4 and the level of confidence remained at 90%, what would be the new margin of error and confidence interval Margin of error, E. Confidence interval: 20.11<x<34.31 O Did the confidence interval increase or decrease and why? increase 4. Definition of Confidence Intervals (Section 6.1) Circle your answer, True of False. • A 99% confidence interval means that there is a 99% probability that the...
step 2: calculate the sample standard deviation from the given
sample. round to two decimal places
step 3: find the critical value that is used in confidence
interval
step 4: construct 80% confidence interval. round to two
decimal place
step 2: find the critical value. round to 3 decimal
place
step 3: find the standard deviation of the paired
differences
step 4:construct 99% confidence interval. round to one decimal
place
A survey of several 9 to 11 year olds recorded...
Part B: (41 points) Problem-Solving Suggestion: Report all final answers to 2 decimal points, carry 3 decimals for intermediate calculations. 1) The basal or resting heart rate typically has a mean of 70 standard deviation of 10 bpm. A sample of 25 students relaxing before the Bio-stat midterm measured a mea (Hint: first determine if this is a Z-test or t-test... Z-test if Population Std. Dev. Is k beats per minute (bpm) with a n = 75 nown) (6-pts) Construct...
Use the sample data and confidence level given below to complete parts (a) through (d). A research instituto poll asked respondents if they felt vulnerable to identity theft. In the poll, n=1052 and x 515 who said "yos." Use a 95% confidence level. Click the icon to view a table of z scores. *) Find the best point estimate of the population proportion p. (Round to three decimal places as needed.) b) Identify the value of the margin of error...
Using the answers from the table above, answer ALL of
the questions below. For questions 1 - 13, draw a
normal curve and indicate the area that you are calculating the
probability of. For questions 14 – 22, use the
appropriate formulas and show all of your
calculations.
Be sure to turn in the table above along with your
answers to all of the questions below. Place your answers in a
folder with your name clearly written at the top...
24. If the population mean is 0 and the population variance o, 1 (10 points) What is the P (z> 3) a. What is the P (z<2) b. What is the P (-1.5<z <3)? c. What is the P (-2.33cz < 1.25)? d. e. What is the P (-2.33<z and >1.25)? 25. If the population mean is 115 and the population variance σ, 100 (10 points) What is the P (z > 120) a. b. What is the P (2<150)?...
Po 5.4.18-T Question Help The population mean and standard deviation are given below. Find the indicated probability and determine whether a sample mean in the given range below would be considered unusual. If convenient, use technology to find the probability For a sample of n-36, find the probability of a sample mean being less than 12,750 or greater than 12,753 when 12,750 and ơ-2.3 For the given sample, the probability of a sample mean being less than 12,750 or greater...
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