Goodness-of-Fit TestTest the hypothesis that the variable x as given by the measured data ofTable 4.1 is described by a normal distribution at the 5% level ofsignificance (a = 0.05).Table 4.1 Sample of Random Variable x0.98111.021.07121.2630.86131.084.1.16141.020.96150.946.0.68161.117.1.34170.998.1.04180.7891.21191.06100.86200.96

Given α=0.05 Table of random variable x Find Hypothesis

Answered: Goodness-of-Fit Test Test the…

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

&Find test statistic
Treatment Sham H2 Researchers conducted a study to determine whether magnets are effective in treating back pain. The results are shown in the table for the treatment (with magnets) group and the sham (or placebo) group. The results are a measure of reduction in back pain. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. 30 30 0.51 0.37 0.56 1.42 a. Use a 0.05 significance level to test the claim that those treated with magnets have a greater mean reduction in pain than those given a sham treatment. What are the null and alternative hypotheses? A. Ho: H1 = H2 H4: H1 # H2 B. Ho: H1 = H2 H1: H1> H2 C. Ho: Hy # H2 H1: H1
Using a normal curve table if a person has a score of 4.78 on a test which equals a z scire of 1.5 the percentage of cases that lie above the score is A.. 43.32% - 50% = -6.68% B.. 50% - 43.32% = 6.68% C.. 100% - 43.32% = 56.68% D.. 50% + 43.32% = 93.32%
Hypothesis Test about a Population Standard Deviation You conducted a research study to analyze the pulse rates of adult men. A simple random sample of 153 adult men from a normally distributed population resulted in a sample standard deviation of pulse rates of 11.33; the sample variance is then 128.40. The given information is then: ? = 153 ? = 11.33 ? 2 = 128.40 Use the sample results with a significance level ? = 0.01 to test the claim that pulse rates of men have a standard deviation equal to 10 beats per minute.
Hypothesis Test for a Population Mean (o is Unknown) You wish to test the following claim (Ha) at a significance level of a = 0.01. H.:µ = 73.1 Ha:µ > 73.1 You believe the population is normally distributed, but you do not know the standard deviation. You obtain a sample of size n = 223 with mean M = 74 and a standard deviation of SD = 5.2. What is the test statistic for this sample? (Report answer accurate to three decimal places.) test statistic = What is the p-value for this sample? (Report answer accurate to four decimal places.) p-value = The p-value is... O less than (or equal to) a O greater than a This test statistic leads to a decision to... O reject the null O accept the null O fail to reject the null As such, the final conclusion is that... There is sufficient evidence to warrant rejection of the claim that the population mean is greater than 73.1. O There is not sufficient evidence to warrant rejection of the claim that the population mean is greater than 73.1. O The sample…
Question content area top Part 1 A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.10 significance level for both parts. Treatment Placebo μ μ1 μ2 n 26 36 x 2.34 2.67 s 0.53 0.82 Question content area bottom Part 1 a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? A. H0: μ1≠μ2 H1: μ1<μ2 B. H0: μ1=μ2 H1: μ1>μ2 C. H0: μ1<μ2 H1: μ1≥μ2 D. H0: μ1=μ2 H1: μ1≠μ2 Your answer is correct. Part 2 The test statistic, t, is negative 1.92−1.92. (Round to two decimal places as needed.) Part 3 The P-value is…
Parts a-d
Standard Devlation (0) n-1 Class Frequency 5.5 – 10.5 1 Example The costs per load (in cent) of 20 laundry detergents tested by a 10.5 – 15.5 2 15.5 – 20.5 3 consumer organization are shown below. Find the variance and 20.5 – 25.5 standard deviation? 25.5 – 30.5 4 30.5 – 35.5 3 35.5 – 40.5 2
Question Help ▼ Test the claim about the difference between two population means u, and u, at the level of significance a. Assume the samples are random and independent, and t populations are normally distributed. Claim: µ, sH2; a = 0.05. Assume o, #o Sample statistics: X, = 2420, s, = 170, n, = 13 and X, = 2296, s, = 50, n, = 10 Identify the null and alternative hypotheses. Choose the correct answer belew. O A. Ho: H1 SH2 O B. Ho: H1 H2 O F. Ho: H1 = H2 Ha: H1 SH2 Ha: H1 # H2 Find the standardized test statistic t. t3= (Round to two decimal places as needed.) Find the P-value. P = (Round to three decimal places as needed.) Click to select your answer(s).
Use the Math_achievement.sav file. As part of a large national education study, a researcher is investigating the relationship between math achievement and socioeconomic status. Data have been collected on 999 students enrolled in secondary education. Perform at test for independent groups for Math by gender. What is H,? The mean of group 0 is the same as the mean of group 1 The mean of group 0 is not the same as the mean of group 1 The mean math achievement score for boys is not different than the mean math achievement score for girls The mean math achievement score for boys is different than the mean math achievement score for girls The mean math achievement score for boys is the same as the mean math achievement score for girls The mean math achievement score for boys is not the same as the mean math achievement score for girls The mean math achievement score for boys is equal to the mean math achievement score for girls The mean math achievement score for boys is not equal to the…
Constructed Response Question 2 A teacher claims that their students are missing more than 10% of the assignments for the third quarter. We take a random sample of 25 students and see that 12% of their assignments are missing. Using a = 0.05, can we support the teacher's claim? Perform a normal distribution rejection region hypothesis test for proportions. Show all seven steps.
Men Women μ μ1 μ2 n 11 59 x 97.72 97.34 s 0.83 0.63 A study was done on the body temperatures of men and women. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed? populations, and do not assume that the population standard deviations are equal. Complete parts? (a) and? (b) below. Use a 0.05 significance level to test the claim that men have a higher mean body temperature than women. a. What are the null and alternative hypotheses? The test statistic, t, is The P-value is State the conclusion for the test. b. Construct a confidence interval suitable for testing the claim that the two samples are from populations with the same mean.

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