A sample of 225 elements from a population with a standard deviation of 60 is selected. The sample mean is 190. Find the 98% confidence interval for u. O 180.695 to 199.305 O 181.8 to 198.2 O 185 to 195 O 130 to 250

A sample of 225 elements from a population with a standard deviation of 60 is selected. The sample mean is 190. Find the 98% confidence interval for u. O 180.695 to 199.305 O 181.8 to 198.2 O 185 to 195 O 130 to 250

Name: A sample of 225 elements from a population with a standard deviation
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: A sample of 225 elements from a population with a standard deviation of 60 is selected. The sample mean is 190. Find the 98% confidence interval for u.180.695 to 199.305181.8 to 198.2O 185 to 195O 130 to 250

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Related questions

Q: Suppose we are interested in calculating a 95% confidence interval for the mean of a normally…

Q: help please answer in text form with proper workings and explanation for each and every part and…

A: Therefore, based on the logical progression of increasing dosages leading to greater observable…

Q: 2. Construct a 95% confidence interval for the population standard deviation of a random sample of…

A: given data sample size(n) = 15 sample standard deviation(s) = 12.7construct 95 % ci for σ.

Q: A random sample of 16 men have a mean height of 67.5 inches and a standard deviation of 2.6 inches.…

Q: Construct a 95% confidence interval for the population mean muμ. Assume the population has a Normal…

A: The margin of error is obtained below:The level of significance=1-0.95=0.05.The degrees of freedom=…

Q: B. (39.431, 46.569) 29. Bob draws a simple random sample from an original population where the…

Q: A random sample of 115 light bulbs had a mean life of x = 507 hours. Assume that o = 32 hours.…

A: Given Sample size=n=115, sample mean x̄=507, standard deviations σ=32 Construct 90% CI for…

Q: Refer to the sample data for pre-employment drug screening shown below. If one of the subjects is…

A: Positive test result drug use is indicated Negative test result drug use is not indicated…

Q: 2. A sample of 26 elements from a normally distributed population is selected. The sample mean is 10…

A: Solution-: Given: We find 95% C.I.

Q: Suppose a randomly selected sample of n = 50 men has a mean foot length of x = 28.1 cm, and the…

A: given data sample size (n) = 50sample mean ( x¯ ) = 28.1sample standard deviatio (s) = 495% ci for…

Q: Construct a 95% confidence interval of the average.

A: Given : Y = 0.00039508 S = 0.0084646 n = 1,259

Q: A simple random sample of 60 items resulted in a sample mean of 80. The populationstandard deviation…

A: Sample size = n = 60, Sample mean = = 80, Population standard deviation = s = 15, Confidence…

Q: 4) A study of 29 female Sumatran elephants provided a 96% confidence t-interval for the mean the…

A: Solution: 4. The standard error of the mean is calculated by using the formula:

Q: Suppose a random sample of 100 individuals is taken and that average wage for that sample is $870…

A: It is given that the mean is 870 and the population standard deviation is 300.

Q: A random sample of 6 light bulbs had a mean life of 548 hours and a standard deviation of 29 hours.…

Q: in a nigh school, the average class size of nine math class was 26.1 with a standard deviation of…

A: We have given that, Sample mean (x̄) = 26.1, standard deviation (s) = 6.21 and sample size (n) = 9…

Q: Use the sample information X = 36, o= 7, n= 16 to calculate the following confidence intervals for µ…

A: (a). Find the 90% confidence interval for the population mean µ: Denote the population mean as µ.…

Q: A sample of 20 observations shows a sample mean of 290 and a sample standard deviation of 30.…

Q: Assume that a sample is used to estimate the life expectancy for males in a certain county. Find the…

Q: Construct the indicated confidence interval for the difference between the two population means.…

A: Given:- The data describes the hours men and women had watched television during the previous week.…

Q: Construct a 95% confidence interval for the population standard deviation o of a random sample of 15…

Q: The average height of students in a state from an SRS of 17 students gave a standard deviation of…

A: given data sample size(n) = 17 sample standard deviation(s) = 2.9construct 95 % ci for σ.

Q: At Western University the historical mean of scholarship examination scores for freshman…

A: The given data is as follows:Population mean, Population standard deviation, Sample size, Sample…

Q: A simple random sample of size n is drawn. The sample mean, x overbarx, is found to be 18.6, and…

A: From the provided information, Sample mean (x̅) = 18.6 Sample standard deviation (s) = 4.1 Sample…

Q: Use the sample information x⎯⎯x¯ = 35, σ = 7, n = 16 to calculate the following confidence intervals…

Q: college admissions officer takes a simple random sample of 80 entering freshmen and computes their…

Topic Video

Question

A sample of 225 elements from a population with a standard deviation of 60 is selected. The sample mean is 190. Find the 98% confidence interval for u.
180.695 to 199.305
181.8 to 198.2
O 185 to 195
O 130 to 250

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 4 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Means$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Similar questions

A random sample of n measurements was selected from a population with unknown mean p and known standard deviation o. Find the margin of error (often denoted as E or EBM) for a 95% confidence interval for u for the given situation. Round to the nearest hundredth when necessary. n = 104, x = 174, o = 11
A simple random sample of 5 observations from a normal distribution was taken, and the following values were obtained: {15, 19, 19, 20, 22}. A 95% confidence interval for the mean is O A. (16.569, 21.431) O B. (15.835, 22.165) O C.(16.069, 21.931) O D. (17.124, 20.876) O E. (16.765, 21.235)
Use the sample information x⎯⎯x¯ = 37, σ = 6, n = 15 to calculate the following confidence intervals for μ assuming the sample is from a normal population.
53.305) B. (24.591, 35.563) C. (26.591, 37.563) D. (28.591, 39.563) 34. A simple random sample of size n = 36 is taken from a normally distributed original population. The sample standard deviation iss = 7. Find the 99% confidence interval for the population variance o2. A. (27.453, 98.756) B. (28.453, 99.756) C. (29.453, 100.756) D. (30.453, 101.756)
7. A sample of size N= 123 adults randomly selected, spent 8.20 hr/ week on the internet with a standard deviation of 6=9.84 hr. Construct a Confidence Interval of 95% for the population mean U the population mean hours for the internet ?
Suppose a randomly selected sample of n = 69 men has a mean foot length of x = 28.3 cm, and the standard deviation of the sample is 3 cm. Calculate an approximate 95% confidence interval for the mean foot length of men. (Round the answers to one decimal place.) to cm
A group of 49 randomly selected students has a mean age of 22.4 years. Assume the population standard deviation is 3.8. Construct a 98% confidence interval for the population mean. O (20.3, 24.5) O (21.1, 23.7) O (18.8, 26.3) O (19.8, 25.1)
Consider constructing a 98% confidence interval for a sample of ten observations. The sample mean is 21.8. The sample standard deviation is 0.72. What is the upper bound on this confidence interval?
Suppose a randomly selected sample of n = 69 men has a mean foot length of x = 27.9 cm, and the standard deviation of the sample is 3 cm. Calculate an approximate 95% confidence interval for the mean foot length of men. (Round the answers to one decimal place.)
At Western University the historical mean of scholarship examination scores for freshman applications is 900. A historical population standard deviation = 180 is assumed known. Each year, the assistant dean uses a sample of applications to determine whether the mean examination score for the new freshman applications has changed. a. State the hypotheses. Ho: 0:equal to 900 Ha: not equal to 900 b. What is the 95% confidence interval estimate of the population mean examination score if a sample of 200 applications provided a sample mean of = 935 (to the nearest whole number)? c. Use the confidence interval to conduct a hypothesis test. Using a = 0.05, can the assistant dean conclude that the mean examination score for the new freshman applications has changed? - Select your answer - d. What is the p-value (to 4 decimals)? (Use Table 1 from Appendix B.)
Fifteen randomly selected women were asked to workout on a stair-master for three minutes. After the three minutes, their pulse rates were measured and were found to have a mean of 108 with a standard deviation of 12.8. Compute a 99% confidence interval for the mean pulse rate of the population. Assume the population is normal. O A. 99 < u < 117 O B. 98 < u < 118 Oc. 101 < p < 115 O D. 103 < p < 115 QUESTION 4 A study of 40 English composition professors showed-that they spent, on average, 12.6 minutes correcting a student's term paper with a standard deviation of 2.5 minutes. Compute a 90% confidence interval for the mean time spent by a professor grading a composition paper. O A. 12.0 < µ< 13.2 O B. 11.7 <µ < 13.5 O C. 11.8 <µ < 13.4 Save All Answer Click Save and Submit to save and submit. Click Save All Answers to save all answers. LEGO 44°F P Type here to search 6 A A 10/05/17 Esc F1 F2 ** F12 F3 F4 F5 F6 F7 PrtSc Insert Delete F8 F9 F10 F11 & 2 3 4 5 6 7 080 Backsp Tab T Y U + I/…