Use the following to answer questions 51-54:Ina hypothesis test with hypotheses H:µ=90 and H, : u#90, a random sample of 97elements selected from the population produced a mean of 92.1. Assume that o=20.1, and thatthe test is to be made at the 10% significance level.51. What are the critical values of z?A) -1.28 and 1.28B) -1.645 and 1.645C) -1.96 and 1.96D) -2.33 and 2.3352. What is the value of the test statistic, z, rounded to three decimal places?53. What is the p-value for this hypothesis test, rounded to four decimal places?Should you reject or fail to reject the null hypothesis in this test? (State your an:"reject" or "fail to reject", but don't include the quotation marks.)54.Page 11

Answered: Use the following to answer questions…

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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The Department of Agriculture wants to determine whether the mean yield per acre for a particular variety of soybeans is different this year compared to the historical avg yield of 520 bushels per acre. Thus, the null and alternative hypotheses are Ho: mu = 520 Ha: mu is not = to 520 You set out to conduct a hypothesis test at the 95% level. Mean yields are distributed Normally. You take a sample of 36 different acres. From this sample, you calculate a mean yield of 573 and a std deviation of 24. What are the critical values for this hypothesis test? Group of answer choices -2.58 and 2.58 -2.56 and 2.56 -1.64 and 1.64 -1.96 and 1.96
Also, what would be the P-value along with the To=__?
Consider the following hypothesis test: Ho: μ=15 Ha: μ≠ 15 A sample of 50 provided a sample mean of 14.15. The Population standard deviation is 3. A). What is the value of the test statistic? ( 2 decimal places) B). What is the P-value? (4 decimal places) C). Using alpha=0.05, is the null hypothesis rejected or not rejected?
A sample of 12 radon detectors of a certain type was selected, and each was exposed to 100 pCi/L of radon. The resulting readings were as follows: 104.3 89.6 89.9 95.6 95.2 90.0 98.8 103.7 98.3 106.4 102.0 91.1 a)Does this data suggest that the population mean reading under these conditions differs from 100? State and test the appropriate hypotheses using =.05. b) Suppose that prior to the experiment, a value of teta=7.5 had been assumed. How many determinations would then have been appropriate to obtain beta=.10 for the alternative u=95 ?
Given random samples Y1, Y2, · .., Yn from exponential A distribution, we want to find a test of significance level = 0.05. Based on your composite hypothesis: Ho :A 2. Explain why the test does not exist, or show the value if it does.
Use a 0.01 significance level to test the claim that the two samples of Yttrium concentrations (in ppm) are from populations with the same mean. Sample 1 30 X1 = 70.29 S1 22.19 Sample 2 n2 32 X2 = 74.26 S2 18.05 d.f.=29 to.005 = 2.756 to.01 = 2.462 to.025 = 2.045 to.05 = 1.669 to.10 = 1.311
The following information is available for two samples selected from independent normally distributed populations. Population A: n1=30 S2/1=25 Population B: n2=30 S2/2=36 a. Which sample variance do you place in the numerator of FSTAT? b. What is the value of FSTAT?
Consider the following hypotheses: Hg: H 2 160 НА: и < 160 The population is normally distributed. A sample produces the following observations: 152 138 151 144 151 142 Conduct the test at the 1% level of significance. (You may find it useful to reference the appropriate table: z table or table) a. Calculate the value of the test statistic. (Negative value should be indicated by a minus sign. Round final answer to 2 decimal places.) Test statistic
Which of the following is the best decision and conclusion based on the result below? H.: p = 0.10 Ha:p + 0.10 Critical Value: +1.645 Computed Test Statistics: z = 5.61 O a. Since the computed test statistics is less than the critical value, do not reject Ho. Therefore, we conclude that at 0.10 level of significance, there is enough evidence that the population proportion is different from 10%. O b. Since the computed test statistics is less than the critical value, do not reject Ho. Therefore, we conclude that at 0.10evel of significance, there is enough evidence that the population proportion is different from 10%. O c. Since the computed test statistics is greater than the critical value, reject Ho. Therefore, we conclude that at 0.10 level of significance, there is enough evidence that the population proportion is different from 10%. O d. Since the computed test statistics is less than the critical value, reject Ho. Therefore, we conclude that at 0.10 level of significance, there…
. A sample mean, sample standard deviation, and sample size are given. Use the one-mean t-test to perform the required hypothesis test about the mean, μ, of the population from which the sample was drawn. Use the critical-value approach. Sample mean = 3.12 s = 0.59 n = 9 α = 0.01 H0: µ = 2.85 H1: µ > 2.85 The test statistics is (Round to three decimal places)
The weekly expenditure on groceries of a random sample of 100 family households was recorded. It was estimated that the mean expenditure was approximately $240. With rising interest rates and petrol prices, it was anticipated that grocery expenditure might decrease. Which hypothesis test would you use to test this claim? 1.One tailed, one sample t-test 2.Two tailed, one sample t-test 3.One tailed, z-test 4.One-tailed Paired Samples t-test 5.Chi Square
Is the proportion of wildfires caused by humans in the south higher than the proportion of wildfires caused by humans in the west? 429 of the 567 randomly selected wildfires looked at in the south were caused by humans while 396 of the 544 randomly selected wildfires looked at the west were caused by humans. What can be concluded at the a = 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: Select an answer Select an answer v Select an answer | (please enter a decimal) Hj: Select an answer v Select an answer v Select an answer v (Please enter a decimal) c. The test statistic ? (please show your answer to 3 decimal places.) d. The p-value = e. The p-value is ? v a f. Based on this, we should Select an answer g. Thus, the final conclusion is that ... (Please show your answer to 4 decimal places.) the null hypothesis. O The results are statistically insignificant at a = 0.05, so there is statistically…

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