Suppose a sample of 49 paired differences that have been randomly selected from a normally distributed population of paireddifferences yields a sample mean of d 5.2 and a sample standard deviation of S=7.4.(a) Calculate a 95 percent confidence interval for HdH₁-H₂ (Round your answers to 2 decimal places.)Confidence interval(b) Test the null hypothesis Ho Hd=0 versus the alternative hypothesis Ha Hd 0 by setting a equal to 10, 05, 01, and .001. Howmuch evidence is there that a differs from 0?t=Reject HO at a equal toevidence that ut differs from 2(c) The p-value for testing He Hd 3 versus Ho Ha>3 equals 0.0214. Use the p-value to test these hypotheses with a equal to 10, .05.01, and 001. How much evidence is there that exceeds 3? What does this say about the size of the difference between u and 42?(Round your p-value answer to 4 decimal places.)peReject HO at a equal toevidence that u1 and u2 differ by more than 3

Given: Sample size n=49 d¯=5.2 Sample standard deviation sd=7.4

Answered: Suppose a sample of 49 paired…

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

Similar questions

A 30 month study is conducted to determine the difference in rates of accidents per month between two departments in an assembly plant. If a sample of 12 from the first department averaged 12.3 accidents per month with a standard deviation of 3.5, and a sample of 9 from the second department averaged 7.6 accidents per month with standard deviation of 3.4, find: The t-value for a 95% confidence interval is:
A 30 month study is conducted to determine the difference in rates of accidents per month between two departments in an assembly plant. If a sample of 12 from the first department averaged 12.3 accidents per month with a standard deviation of 3.5, and a sample of 9 from the second department averaged 7.6 accidents per month with standard deviation of 3.4, find: The t-value for a 95% confidence interval is: A. 2.09302 B. 1.724718 C. 2.08596 D. 1.729133 E. none of the preceding
The scores of a random sample of 100 high school students on a standardized mathematics test in a certain school gave a mean of 78 and a standard deviation of 20.Find the 95% confidence interval estimate for the true average score in mathematics in this standardized test. Formula: E=zα/2(σ/√n)
A sample of 51 recent graduates from a specific program yielded an average starting salary of $38,500 and a standard deviation of $2563. (a) Find the 95% confidence interval for the standard deviation in starting salary based on this sample. (b) Interpret the confidence interval for part (a) in the context of this problem
An article reported that for a sample of 48 kitchens with gas cooking appliances monitored during a one-week period, the sample mean CO2 level (ppm) was 654.16, and the sample standard deviation was 162. (a) Calculate and interpret a 95% (two-sided) confidence interval for true average CO2 level in the population of all homes from which the sample was selected. (Round your answers to two decimal places.) (________, ________) ppm (b) Suppose the investigators had made a rough guess of 175 for the value of s before collecting data. What sample size would be necessary to obtain an interval width of 47 ppm for a confidence level of 95%? (Round your answer up to the nearest whole number.) ________ kitchens
The bottlers of a new fruit juice daily select a random sample of 12 bottles of the drink to estimate the mean quantity of juice in the bottles filled that day. On one such day, a sample was taken with a sample mean of 12.03 and a sample standard deviation of 0.12. Based on this information, what is the margin of error associated with a 90% confidence interval estimate for the population mean, if the population standard deviation has historically been 0.07? 0.020 0.070 0.040 0.033
In a study, Group 1 was found to have an average of 53 and a population standard deviation of 13 out of a random sample of 25. Group 2 was found to have an average of 42 and a population standard deviation of 9 out of a random sample of 16. With a 99% confidence interval, what is the smaller value?
In a local store a produce manager needs to estimate the mean weight of Texas oranges delivered from farms. In a random sample of 68 oranges, the mean weight is found to be 154 grams. The standard deviation is known to be 9 grams, and the population is normally distributed. What are the lower and upper bounds for a 90% confidence interval of the population mean weight of an orange?
In a study of the effect of cooling rate on the hardness of welded joints, 50 welds cooled at a rate of 10°C/s had an average Rockwell (B) hardness of 91.1 and a standard deviation of 6.23, and 40 welds cooled at a rate of 30°C/s had an average hardness of 90.7 and a standard deviation of 4.34. a) Find a 95% confidence interval for the difference in hardness between welds cooled at the different rates. b) Someone says that the cooling rate has no effect on the hardness. Do these data contradict this claim? Explain.
A 30 month study is conducted to determine the difference in rates of accidents per month between two departments in an assembly plant. If a sample of 12 from the first department averaged 12.3 accidents per month with a standard deviation of 3.5, and a sample of 9 from the second department averaged 7.6 accidents per month with standard deviation of 3.4. The 95% confidence interval between the difference in rates between the two departments (round off to three decimals) is:
A random sample of high temperatures for 12 recent Thanksgiving Days had an average of 42℉. Assuming the variable is normally distributed and using a 95% confidence interval of the population mean of 36.92℉ and 47.08℉, what is the standard deviation of the population?
A random sample of size 30 from a normal population yields x̅ = 69 and s = 4. The lower bound of a 95 percent confidence interval is (Round off upto 2 decimal places).

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS