If apha is ., whet ia the eritical value ef Z ina 2-taled test?+2.57Option 39 49

Answer - If alpha is 1% , what is the critical value of z in a two tailed test ?

Answered: If aipha is . what is the critical…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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K Previously, 6.6% of workers had a travel time to work of more than 60 minutes. An urban economist believes that the percentage has increased since then. She randomly selects 55 workers and finds that 10 of them have a travel time to work that is more than 60 minutes. Test the economist's belief at the x = 0.1 level of significance. What are the null and alternative hypotheses? Ho: ▼ versus H₁: (Type integers or decimals. Do not round.) Because npo (1-Po) (Round to one decimal place as needed.) Find the P-value. = 10, the normal model P-value= (Round to three decimal places as needed.) Is there sufficient evidence to support the economist's belief? 00 be used to approximate the P-value. OA. Yes, do not reject the null hypothesis. There is sufficient evidence because the P-value is greater than α. OB. No, do not reject the null hypothesis. There is not sufficient evidence because the P-value is greater than α. C. Yes, reject the null hypothesis. There is sufficient evidence because the…
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An airline company is interested in improving customer satisfaction rate from the 52% currently claimed. The company sponsored a survey of 205 customers and found that 115 customers were satisfied. Determine whether sufficient evidence exists that the customer satisfaction rate is higher than the claim by the company. What is the test statistic z?______ What is the p-value?_______ Does sufficient evidence exist that the customer satisfaction rate is higher than the claim by the company at a significance level of α=0.01?______ select (no or yes)
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help solve attached What is the conclusion for this test? The p value is greater than or less than the significance level α, so reject or fail to reject the null hypothesis. There is sufficent or insufficent evidence to support the claim that vinyl gloves have a greater virus leak rate than latex gloves.
9.63 What is meant by the power of a test? 9.64 What is the difference between a one-tail test and a two-tail test? 9.65 What is meant by a p-value?
A hypothesis test is conducted to determine whether the percentage of US adults that think marijuana should be illegal is less than 40%. A random sample of 400 US adults includes 144 that think marijuana should be illegal. The value of the test statistic is -1.63 Find the P-value of the hypothesis test
Generally speaking, would you say that most people can be trusted? A random sample of n. 258 people in Chicago ages 18-25 showed that r₁-40 said yes. Another random sample of n₂ = 287 people in Chicago ages 35-45 showed that r₂- 69 said yes. Does this indicate that the population proportion of trusting people in Chicago is higher for the older group? Use a = 0.05. LAUSE SALT (a) What is the level of significance? State the null and alternate hypotheses. O Ho: P₁ P₂i H₂: P₁ P₂ P₂ H₁: Pg P₂ P₂i H₂i Pq
According to a survey conducted by the Association for Dressing and Sauces, 85% of American adults eat salad at least once a week. A nutritionist suspect that the percentage is higher that this. She conducts a survey of 200 American adults an finds that 171 of them eat salad at least once a week. Conduct the appropriate test that addresses the nutritionist's suspicions. Use the a = 0. 1 level of significance. What is the p-value? 0.85 0.855 0.1980 0.4215
A student conducted a test at 0.05, and she found the 95% CI to be [4.79,7.25]. The mean for the sample is 6.12. Is the conclusion for the test that there is a significant difference or that there is not a significant difference? You should fully explain how you can use this information to draw a conclusion.
Please help me find the standardized test statistic and the P-value
The mean time taken to submit an assignment by a student was 20 days according to the previous semester record. The Exam office claimed that this year the submission time increased due to the natural calamities. Was thesubmission time really increased or not. Test the hypothesis with a 5% level of significance. The time taken by 15 students to submit their assignment are given below (14+a), (15+b),(16+c),(17+d),( 18+e) ,19, (20+a), (21+b),(22+c), (23+d),(24+e),(25+f), (26+a),(27+b), (28+c). values: a=1, b=9, c=1, d=9, e=4, f=6, g=3

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If aipha is . what is the critical value of Z ina2-taled test? +2.57