OSTATISTICSInterpreting a histogram9.8.7654325.4-3.21O9 to 1931 to 4120 to 30Number of tablets sold(a) What is the class width?11(b) How many stores sold 31 or more tablets?11(c) One class is the least frequent. How many stores are inthis class?ExplanationCheckType here to searchEt42 to 52

Given Total number of frequency=20

Answered: OSTATISTICS Interpreting a histogram…

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

Eyeglassomatic manufactures eyeglasses for different retailers. They test to seehow many defective lenses they made in a given time period and found that 11%of all lenses had defects of some type. Looking at the type of defects, they foundin a three-month time period that out of 34,641 defective lenses, 5865 was due to scratches. Are there more defects from scratches than from all other causes? Use a 1% level of significance.
Television Set Ownership According to Nielsen Media Research, of all the U.S. households that owned at least one television set, 83% had two or more sets. A local cable company canvassing the town to promote a new cable service found that of the 295 households visited, 240 had two or more television sets. At =α0.05, is there sufficient evidence to conclude that the proportion is less than the one in the report? Do not round intermediate steps. Compute the test value. z =____
Are you an impulse shopper? A survey of 600 grocery shoppers indicated that 57% of males and 44% of females make an impulse purchase every time they shop. Assume that the survey consisted of 300 males and 300females. a. At the 0.05level of significance, is there evidence of a difference in the proportion of males and females who make an impulse purchase every time they shop? b. Find the p-value and interpret its meaning.
Many universities and colleges have instituted supplementalinstruction (SI) programs, in which a student facilitatormeets regularly with a small group of students enrolled inthe course to promote discussion of course material andenhance subject mastery. Suppose that students in a largestatistics course (what else?) are randomly divided into acontrol group that will not participate in SI and a treatmentgroup that will participate. At the end of the term, eachstudent’s total score in the course is determined. Why didn’t the investigators put all students in the treatmentgroup?
Many universities and colleges have instituted supplementalinstruction (SI) programs, in which a student facilitatormeets regularly with a small group of students enrolled inthe course to promote discussion of course material andenhance subject mastery. Suppose that students in a largestatistics course (what else?) are randomly divided into acontrol group that will not participate in SI and a treatmentgroup that will participate. At the end of the term, eachstudent’s total score in the course is determined.a. Are the scores from the SI group a sample from anexisting population? If so, what is it? If not, what isthe relevant conceptual population? b. What do you think is the advantage of randomlydividing the students into the two groups rather thanletting each student choose which group to join?c. Why didn’t the investigators put all students in the treatmentgroup? [Note: The article “SupplementalInstruction: An Effective Component of StudentAffairs Programming” (J. of College Student…
A new process has been designed to make ceramic tiles. The goal is to have no more than 5% of the tiles be nonconforming due to surface defects. A random sample of 1000 tiles is inspected. Let p̂ be the proportion of nonconforming tiles in the sample. a) If the sample proportion of nonconforming tiles were 0.075, would it be pausible that the goal had been reached? Explain. b) If 5% of the tiles produced are nonconforming, what is P (p̂ ≥ 0.075)? c) Based on the answer to part a, if 5% of the tiles are nonconforming, is a proportion of 0.075 nonconforming tiles in a sample of 1000 unusually large?
Television Set Ownership According to Nielsen Media Research, of all the U.S. households that owned at least one television set, 83% had two or more sets. A local cable company canvassing the town to promote a new cable service found that of the 295 households visited, 240 had two or more television sets. At =α0.05, is there sufficient evidence to conclude that the proportion is less than the one in the report? Do not round intermediate steps. (a) State the hypotheses and identify the claim.
The following table shows the marks obtained by applicants for a certain job in an aptitude test.Sorted marks obtained by applicants736457494945413938383737373636343434343433313130302927272725(i) Find the percentage of values that fall within two standard deviations around the mean. (ii) Find the percentage of values that fall within three standard deviations around the mean.
researcher estimates that the average height of the buildings of 30 or more stories in a large city is at most 700 feet. A random sample of 10 buildings is selected, and the heights in feet are shown. At α = 0.025, is there enough evidence to reject the claim? 485 511 841 725 615 520 535 635 616 582 What hypothesis for this problem
Interpret the p- value for a right - tailed test. Answer choices : Area captured between 2 test statistics area to the right of the positive and left of the negative test stats added together area to the right of a test statistic area to the left of a test statistic the alpha value in the right tail
A stent is a wire mesh tube that is placed in a blood vessel to keep it open. A total of 1120 patients received a new kind of stent that was coated with a drug designed to prevent a blockage in the blood vessel. Of these, 134 required additional treatments within a year. Can you conclude that less than 15% of patients receiving these stents require additional treatment? Use the a=0.05 level of significance.
A company manufactures microwave ovens. In February, a random sample of 50 microwave ovens were inspected, and 4 were found to be defective. The company manufactured 3,200 microwave ovens in February. Based on the results from the sample, about how many microwave ovens are expected to be defective? 63 microwav

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

OSTATISTICS Interpreting a histogram 10+ 9. 8. 7 6. 5. 4- 3. 2. 1 0 9 to 19 31 to 41 20 to 30 Number of tablets sold (a) What is the class width? 11 (b) How many stores sold 31 or more tablets? 1 (c) One class is the least frequent. How many stores are in this class? Explanation Check 42 to 52