Two different types of polishing solutions are being evaluated for possible use in a tumble-polish operation for manufacturinginterocular lenses used in the human eye following cataract surgery. 250 lenses were tumble polished using the first polishing solution,and of this number 152 had no polishing-induced defects. Another 250 lenses were tumble-polished using the second polishingsolution, and 125 lenses were satisfactory upon completion.(a) What is the P-Value for this test?Round your answer to four decimal places (e.g. 98.7654).P – Value =eTextbook and Media(b) Is there any reason to believe that the two polishing solutions differ? Use a =0.01.noyes

Answered: Image /qna-images/answer/45a44017-cb70-4e6c-8829-f70734513fe9.jpg

Answered: Two different types of polishing…

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

The average worker at a local brake manufacturer produces 10 brakes per day (other statistical information was not known). An industrial psychologist was hired to increase worker productivity and a new assembly method was designed and tested in a sample of workers. Identify the appropriate test. Select one: a. independent samples t test b. z test c. single sample t test d. paired samples t test
Your medical research team is investigating the standard deviation of the cost of a 30-day supply of a certain heart medication. A pharmaceutical company thinks that the standard deviation of the cost is less than $17. You want to support this claim. How would you write the null and alternative hypotheses? H0: ▼ sigma not equals 17σ≠17 sigma equals 17σ=17 sigma less than or equals 17σ≤17 sigma less than 17σ<17 sigma greater than or equals 17σ≥17 sigma greater than 17σ>17 Ha: ▼ sigma less than or equals 17σ≤17 sigma not equals 17σ≠17 sigma greater than or equals 17σ≥17 sigma greater than 17σ>17 sigma equals 17σ=17 sigma less than 17
Nonparametric: A small study is conducted to compare birth weight in babies born to mothers who do not smoke to those that smoke more than ½ pack/day. Is there a significant difference between birth weights due to maternal smoking status? Use the Mann-Whitney U test with a 5% level of significance. What is U1 (non-smokers)? Birth weights of infants in two groups of mothers. (Observed data) Nonsmokers Heavy Smokers (≥1/2 pack/day) 8.6 7.0 8.5 5.2 6.3 6.1 9.3 6.7 8.0 6.6 6.8 7.4 4.9 6.3
ment (natural product) group and a placebo group. Section II: Free Response Show all your work. Indicate clea the correctness of your methods as well as on the accuracy T11.11 Agovernment report says that the average amount of money spent per U.S. household per week on food is about $158. A random sample of 50 house- holds in a small city is selected, and their weekly spending on food is recorded. The sample data have a mean of $165 and a standard deviation of $32. Is there convincing evidence that the mean weekly spending on food in this city differs from the national figure of $1587 (a) State appropriate hypotheses for performing a significance test in this setting. Be suure to define the parameter of interest. (b) The distribution of household spending in this small city is heavily skewed to the right. Explain why the Normal/Large Sample condition is met in this case. (c) The Pvalue of the test is 0.128. Interpret this value. What conclusion would you make? T11.12 As a non-native…
Statistical significance at the 0.01 level is more difficult to achieve easier to achieve ○ less costly O less informative than significance at the 0.05 level.
Why is the Chi- square test applicable to the given scenario?
Show all your work Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well as on the accuracy and completeness of your results and explanations. Researchers are studying two populations of sea turtles, In population D. 30 percent of the turties have a shell length greater than 2 feet. In population E. 20 percent of the turtles have a shell length greater than 2 feet. Froma random sample of 40 turtes selected from D.15 had a shell length greater than 2 feet. From a random sample of 60 turtles selected fromE. 11 had a shell length greater than 2 feet. Let pry represent the sample proportion for D, and let p represent the sample proportion for E (a)What is the value of the difference pryPr?Show your work. (b) What are the mean and standard deviation of the sampling distribution of the difference in sample proportions p P:? Show your work and label each value. (c) Can it be assumed that the sampling distribution of the difference of the…
An article in a journal reports that 34% of American fathers take no responsibility for child care. A researcher claims that the figure is higher for fathers in the town of Littleton. A random sample of 225 fathers from Littleton, yielded 97 who did not help with child care. Find the p-value for a test of the researcher's claim to three decimal places Question content area bottom Part 1 A. 0.053 B. 0.001 C. 0.002 D. 0.004
You want to obtain a sample to estimate a population proportion. Based on previous evidence, you believe the population proportion is approximately 12%. You would like to be 90% confident that your estimate is within 1.5% of the true population proportion. How large of a sample size is required? Hint: Video 2 [+] n = Submit Question DELL PII prt sc F10 home end F4 FS F6 F7 F8 F9 F11 24 % 4. 5 7 8. 9. T Y U R
Fisher's exact p-value 3.0 puntos posibles (calificables, resultados ocultos) In the table of data below, the column labeled Y is the observed outcome and W is the indicator of treatment, i.e. W = 1 indicates that Y in the same row is the observed outcome from a treatment unit, and W = 0 indicates that Y in the same row is the observed outcome from a control unit. Y W 0.5 1 0.2 0 0.4 0 0.7 1 Compute the test statistic T for the Fisher Exact Test. T = Conduct the two-sided Fisher Exact Test on the data above and report the p-value. Fisher's p-value:
b) Calculate the fitness of a population with allele frequency x = 0.4. W = Give your answer rounded to 2 decimal places. Find the allele frequency, x, of a population with fitness 0.2. X =
9. You want to know if college students have more stress in their lives than the general population (u=12), so you gather data from 25 people to test your hypothesis. Your sample has an average stress score of X=13.11 and an SD of s=3.89. Use a 1-sample t-test to see if there's a difference. please explain without excel because I cannot access thank you much !

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