The average final exam score for the statistics course is82%. A professor wants to see if the average final examscore for students who are given colored pens on the firstday of class is lower. The final exam scores for the 14randomly selected students who were given the coloredpens are shown below. ASsume that the distribution of thepopulation is normal.92, 81, 89, 76, 64, 63, 83, 83, 59, 56, 63, 56, 84, 62What can be concluded at the the a =0.01 level ofsignificance level of significance?a. For this study, we should uset-test for a population meanb. The null and alternative hypotheses would be:Но:H1:μc. The test statistic t(please%3Dshow your answer to 3 decimal places.)d. The p-value(Please show your answer%Dto 4 decimal places.)

Name: The average final exam score for the statistics course is82%. A profe
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: The average final exam score for the statistics course is82%. A professor wants to see if the average final examscore for students who are given colored pens on the firstday of class is lower. The final exam scores for the 14randomly selected studen

Given: n = 14 level of significance = 0.01 mu = 82 sample mean = x bar = 72.21429 sample standard…

Math

Statistics

a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Но: H1: c. The test statistic | t (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer %3D to 4 decimal places,)

a. For this study, we should use t-test for a population mean b. The null and alternative hypotheses would be: Но: H1: c. The test statistic | t (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer %3D to 4 decimal places,)

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

Do men take less time than women to get out of bed in the morning? The 42 men observed averaged 7.6 minutes to get out of bed after the alarm rang. Their standard deviation was 2.2. The 52 women observed averaged 9 minutes and their standard deviation was 2.1 minutes. What can be concluded at the a = :0.01 %3D level of significance?
A researcher speculates that because of differences in diet, Japanese children have a lower mean blood cholesterol level than U.S. children do. Suppose that the mean level for U.S. children is known to be 175. Let ? represent the true mean blood cholesterol level for Japanese children. What hypotheses should the researcher test? H0: ? = 175 versus Ha: ? > 165H0: ? = 175 versus Ha: ? < 185 H0: ? = 175 versus Ha: ? < 175H0: ? = 175 versus Ha: ? > 175H0: ? = 185 versus Ha: ? > 175
Also find the p value
Nabisco claims that Chip Ahoy Cookies have an x ̅=28.67 chocolate chips per cookie with a SD=2.67. You randomly select 36 cookies from a new bag and carefully remove all the chocolate chips from each of the 36 cookies. You find the mean of the chocolate chips for the 36 cookies is 24.27 chocolate chips per cookie. Calculate the standard error for the chocolate chips in your experiment. (round to the nearest hundredth).
A random sample of 10,000 bottles of cola was taken to see whether the mean weight was 16 fluid ounces, as marked on the container. The null hypothesis is that the population mean is 16 ounces. Use the read-out below to test the hypothesis that the colas do not have a population mean of 16 fluid ounces. You do not have to do any calculations; just interpret the given data clearly and thoroughly in the context of the problem. | One-Sample T: ounces Test of u = 16 vs = 16 Variable Mean StDev SE Mean 95 CI T P ounces 10000 15.9988 0.0985 0.0010 (15.9969, 16.0007) -1.21 0.225
Historically, Olympic officials have reported testosterone levels in general should be u = 538 ng/dL, with o = 189, with x being normally distributed. Summer Olympic sprinters (n = 8) from the U.S. were tested for testosterone levels the morning after the opening ceremonies. Their sample mean was ng/dL. Do these data indicate that the sprinters had an overall average testosterone level greater than 538? Use a = .05. State a, H,, H1, p-value, rejection, or non-rejection, and be certain to interpret your results.
A successful basketball player has a height of 6 feet 11 inches, or 211 cm. Based on statistics from a data set, his height converts to the z score of 5.17. How many standard deviations is his height above the mean?
In a city with three high schools, all the ninth graders took a Standardized Test, with these results: Number of ninth graders (Frequency) Mean Test Score High School Glenwood 82 262 Central 92 311 Lincoln 67 168 The city's PR manager, who never took statistics, claimed the mean score of all ninth graders in the city was the average of 82, 92, and 67, whic incorrect. What is the mean score for all ninth graders in the city? Round to one decimal place 80.3. Of course, that is Mean of all ninth grader's scores *