A math teacher claims that she has developed a review course that increases the scores of students on the math portion of a collegeentrance exam. Based on data from the administrator of the exam, scores are normally distributed with u = 514. The teacher obtainsa random sample of 1800 students, puts them through the review class, and finds that the mean math score of the 1800 students is520 with a standard deviation of 112. Complete parts (a) through (d) below.(b) Test the hypothesis at the a = 0.10 level of significance. Is a mean math score of 520 statistically significantly higher than 514?Conduct a hypothesis test using the P-value approach.Find the test statistic.to =(Round to two decimal places as needed.) Find the P-value.The P-value is(Round to three decimal places as needed.)

Answered: Image /qna-images/answer/a0ea7c61-9bfd-4847-9df1-1f100cd229c1.jpg

Answered: A math teacher claims that she has…

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

Suppose a friend tells you that the average length of trout caught in pyramid lake is u=19 inches. However a survey reported that Of a random sample of 51 fish caught, the mean length was x=18.6 inches with Walmart standard deviation s=3.5 inches. Do these data indicate that the average length of a trout caught in pyramid lake is less than u=19 inches? Use a=0.05
The mean test score for a history test is 63 with a standard deviation of 9. The mean test score for a chemistry test is 23 with a standard deviation of 4. A student got a 66 on the history test and a 26 on the chemistry test, use Z-scores to determine the relative performance on each test. On which test did the student perform better, and why?
Assume that adults have IQ scores that are normally distributed with a mean of 100.3 and a standard deviation 23. Find the first quartile, which is the first IQ score separating the bottom 25% from the top 75%
Solar earned a score of 940 on a national achievement test. The mean test score was 850 wth a standard deviation of 100.What proportion of students had a higher score than Solar? (Assume that test scores are normally distributed.)
In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 72 and a standard deviation of 7. Grades are assigned such that the top 10% receive A's, the next 20% received B's, the middle 40% receive C's, the next 20% receive D's, and the bottom 10% receive F's. Find the lowest score on the final exam that would qualify a student for an A, a B, a C, and a D. The lowest score that would qualify a student for an A is________ (Round up to the nearest integer as needed.) The lowest score that would qualify a student for a B is_______ (Round up to the nearest integer as needed.) The lowest score that would qualify a student for a C is ______ (Round up to the nearest integer as needed.) The lowest score that would qualifty a student for a D is______ ( Round up to the nearesr integer as needed.)
In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 73 and a standard deviation of 8. Grades are assigned such that the top 10% receive A's, the next 20% received B's, the middle 40% receive C's, the next 20% receive D's, and the bottom 10% receive F's. Find the lowest score on the final exam that would qualify a student for an A, a B, a C, and a D. The lowest score that would qualify a student for an A is nothing. (Round up to the nearest integer as needed.) The lowest score that would qualify a student for a B is nothing. (Round up to the nearest integer as needed.) The lowest score that would qualify a student for a C is nothing. (Round up to the nearest integer as needed.) The lowest score that would qualify a student for a D is nothing. (Round up to the nearest integer as needed.)
A standardized exam's scores are normally distributed. In a recent year, the mean test score was 1457 and the standard deviation was 315. The test scores of four students selected at random are 1900, 1200, 2180, and 1350. Find the z-scores that correspond to each value and determine whether any of the values are unusual. The is the z-score for 1900?
In a large section of a statistics class, the points for the final exam are normally distributed, with a mean of 7676 and a standard deviation of 77. Grades are assigned such that the top 10% receive A's, the next 20% received B's, the middle 40% receive C's, the next 20% receive D's, and the bottom 10% receive F's. Find the lowest score on the final exam that would qualify a student for an A, a B, a C, and a D.
The scores on the final exam in a statistics course are close to being normally distributed. The mean score is 60 points, and four-fifths of the class score between 45 and 75. The standard deviation of the scores is
According to her doctor, Mrs. Brown's cholesterol level is higher than only 15% of the females aged 50 and over. The cholesterol levels among females aged 50 and over are approximately normally distributed with a mean of 235 mg/dL and a standard deviation of 20mg/dL. What is Mrs. Brown's cholesterol level? Carry intermediate computations to at least 4 decimal places. Round answer to one decimal place.
Assume that an intelligence test scores are distributed normallt with a mean of 100 and a standard deviation of 15. If you scored 124 on this intelligence test, what is your z-score on this distribution.
I will like!

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