9. In a test of the hypothesis H0: μ=48versus Ha: μ>48, a sample of n=100 observations possessed mean x=47.2 and standard deviation s=4.7.Find and interpret the p-value for this test. The p-value for this test is ___. (Round to three decimal places as needed.)

9. In a test of the hypothesis H0: μ=48versus Ha: μ>48, a sample of n=100 observations possessed mean x=47.2 and standard deviation s=4.7.Find and interpret the p-value for this test. The p-value for this test is ___. (Round to three decimal places as needed.)

Name: 9. In a test of the hypothesis H0: μ=48versus Ha: μ>48, a sample of n
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Description: 9. In a test of the hypothesis H0: μ=48versus Ha: μ>48, a sample of n=100 observations possessed mean x=47.2 and standard deviation s=4.7.Find and interpret the p-value for this test. The p-value for this test is ___. (Round to three decimal plac

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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#1.
It is necessary for an automobile producer to estimate the number of miles per gallon achieved by its cars. Suppose that the sample mean for a random sample of 110 cars is 29.4 miles and assume the standard deviation is 3.4 miles. Now suppose the car producer wants to test the hypothesis that ?μ, the mean number of miles per gallon, is 32.4 against the alternative hypothesis that it is not 32.4 Conduct a test using ?=.05 by giving the following: (a) positive critical ? score (b) negative critical ? score (c) test statistic The final conclustion is A. There is not sufficient evidence to reject the null hypothesis that ?=32.4B. We can reject the null hypothesis that ?=32.4 and accept that ?≠32.4
can you find two tailed test p value for given data sample size 14 test statistics -2.23
What is the test statistics? From the problem in the picture
18. The average salary in this city is $46,400. Is the average more for single people? 54 randomly selected single people who were surveyed had an average salary of $48,011 and a standard deviation of $16,440. What can be concluded at the αα = 0.05 level of significance? For this study, we should use The null and alternative hypotheses would be: H0: H1: The test statistic = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is α Based on this, we should the null hypothesis. Thus, the final conclusion is that ... The data suggest that the populaton mean is significantly greater than 46,400 at αα = 0.05, so there is statistically significant evidence to conclude that the population mean salary for singles is greater than 46,400. The data suggest that the sample mean is not significantly greater than 46,400 at αα = 0.05, so there is statistically…
4. In a test of the hypothesis Ho : u = 10 versus H. : 4 # 10, a sample of n = I = 10.8 and standard deviation s = 3.1. 50 observations possessed mean (a) Find an interpret the p-value for this test and answer a question regarding the interpretation of the result if a = 0.10. The p-value is (Fill in the blank; round to four decimal places, as needed.) You should find one of the following useful: P(z > 2.311) z 0.0104 P(z 1.825) z 0.0340 P(z < 1.431) z 0.9238 "There is sufficient evidence to reject Họ for a = 0.10." TRUE or FALSE (Circle the correct answer.) (b) Use the rejection region approach for part A. Why is this result equivalent to the p-value method? Draw a picture and/or explain in words. You should find one of the following useful: 2, 10 1.282 z.0, 1.645 2025 1.96 01 2.326 2005 2.576 Bonus (4 points). Suppose that instead of n = 50 observations, you were only able to attain a sample of n = 15 observations. In this case, compute the test statistic and provide the recipe for…
You wish to test the following claim (HaHa) at a significance level of α=0.01. Ho:μ=77.7 Ha:μ<77.7You believe the population is normally distributed and you know the standard deviation is σ=9.2. You obtain a sample mean of M=73.4 for a sample of size n=41What 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... (multiple choice) less than (or equal to) αα greater than αα This test statistic leads to a decision to... (multiple choice) reject the null accept the null fail to reject the null As such, the final conclusion is that... (multiple choice) There is sufficient evidence to warrant rejection of the claim that the population mean is less than 77.7. There is not sufficient evidence to warrant rejection of the claim that the population mean is less than 77.7. The sample data support the claim that…
If the t-statistic for a single sample t-test is 1.58, what can you conclude? a. The test is significant at an alpha level of .05. b. The sample size of the test was at least 30. c. The sample mean was larger than the population mean. d. The population standard deviation was smaller than the difference between the sample mean and the population mean.
H6.
A car insurance company has determined that 9% of all drivers were involved in a car accident last year. Among the 10 drivers living on one particular street, 3 were involved in a car accident last year. If 10 drivers are randomly selected, what is the probability of getting 3 or more who were involved in a car accident last year? O a. O b. O C. O d. 0.4435 0.9548 0.0541 0.0452