Section D: A research team believes that the systolic blood pressure of adult males is normally distributed with apopulation variance equal to 400. A simple random sample of 36 males selected from the adult male population had amean systolic blood pressure reading of 130. Let u denote the mean systolic blood pressure of adult males. Suppose theresearch team wants to test, at the 5% level of significance, whether the mean systolic blood pressure of adult males isnot equal to 135. Suppose the assumptions of this hypothesis test are satisfied. 13. What are the null and alternative hypotheses, and level of significance for the hypothesis test stated in the preambleof Section D?H₁ : μ = 135 vs H₁ : µ > 135 (a = 0.05)○ H₁ μ =135 vs Ha : µ < 135 (a = 0.05)Ο Ηo : μ=135 vs H₁ : μ ‡ 135(α = 0.05)H₁ : μ = 0 vs Ha : μ‡0 (α = 0.05)

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Answered: 13. What are the null and alternative…

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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Test whether patients getting Treatment 1 are more likely to survive, if 63 out of 83 getting Treatment 1 survive and 30 out of 68 getting Treatment 2 survive. (a) Find the relevant sample proportions in each group and the pooled proportion. Round your answers to three decimal places. P₁ 122 P₂ P = || =
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Suppose you are carrying out the a hypothesis test at the a = 0.04 level with the following set of hypotheses: Hou = 10 Ha µ > 10 Assuming that all of the relevant assumptions were met and you ended up with a p-value of 0.39, what would you make as your decision for this hypothesis test?
1. Value of test statistic Chi square is 6.435 and critical value of Chi square from the table is 6.345; thus we will reject the null hypothesis (H0). Select one: a.True B.False
Suppose there is a claim that a certain population has a mean, µ, that is equal to 9. You want to test this claim. To do so, you collect a large random sample from the population and perform a hypothesis test at the 0.05 level of significance. To start this test, you write the null hypothesis H, and the alternative hypothesis H, as follows. Ho: µ=9 H: µ±9 Suppose you also know the following information. The critical values are -1.960 and 1.960 (rounded to 3 decimal places). The value of the test statistic is -1.225 (rounded to 3 decimal places). (a) Complete the steps below to show the rejection region(s) and the value of the test statistic for this test. Normal Distribution Step 1: Select one-tailed or two-tailed. O One-tailed O Two-tailed 03- Step 2: Enter the critical value(s). (Round to 3 decimal places.) 0.2+ 0.1+ Step 3: Enter the test statistic. (Round to 3 decimal places.) (b) Based on your answer to part (a), choose the correct statement. O The value of the test statistic lies…
Test the claim about the population mean, µ, at the given level of significance using the given sample statistics. Claim: µ ‡6000; α = 0.04; ∞ = 416. Sample statistics: x = 5700, n = 38 μ Identify the null and alternative hypotheses. Choose the correct answer below. O A. Ho: μ = 6000 H₂: μ#6000 'a O C. Ho: μ ≥6000 Ha: μ#6000 E. Ho: μ#6000 Ha: μ ≤ 6000 B. Ho: μ#6000 H₂: μ = 6000 O D. Ho: μ6000 H₂:μ ≥6000 OF. Ho: μ≤ 6000 Ha: μ#6000
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4. State the null and alternative hypotheses, state whether left/right/two-tailed, state a, find the P-Value, should we reject Ho, or should we fail to reject Ho at 1% level of significance? Use the P-Value method only, not the critical value method. Example: The test statistic of z = -1.5 is obtained when testing the claim that ua Careful: This example is for a z-value problem, the actual questilons in #4 use t-values. a. The claim is that for 12 AM body temperatures, the mean is u<98 F. The size is n=5 and the test statistic is 1=-1.603. b. The claim is that for Verizon data speeds at airports, the mean is u=14.00 mbps . The size is n=14 and the test statistic is 1=-2.645.
i
Researchers investigated the propensity of patients in emergency rooms to be prescribed pain medication. The dataset for this study included the discharge notes of over 4000 patients attending a hospital emergency room between 2014 and 2019. Choshen-hillel, S., Sadras, I., Gordon-hecker, T., Genzer, S., Rekhtman, D., & Caruso, E. M. (2022). Physicians prescribe fewer analgesics during night shifts than day shifts. Proceedings of the National Academy of Sciences, 119(27), e2200047119. Two of the variables collected are described below: Shift Type The type of shift the attending physician was working at the time the patient was seen. - Day shift (8 or 15 hour shift starting at 8am) - Night shift (12 or 16 hour shift starting at 8pm) Prescription Whether or not pain medication was prescribed - Prescribed - Not prescribed The data collected on these two variables is displayed in the two-way table of counts below: Shift type Not-prescribed Total 1644 2893 831 1264 2475 4157 Table 1: A…
The claim is that for 10 AM body temperatures of males, the mean is less than 98.6°F. The sample size is n=39 and the test statistic is t=−4.041. Use technology to find the P-value. Based on the result, what is the final conclusion? Use a significance level of 0.01. Question content area bottom Part 1 State the null and alternative hypotheses. H0: μ ▼ greater than> less than< not equals≠ equals= enter your response here H1: μ ▼ greater than> less than< less than or equals≤ not equals≠ equals= greater than or equals≥ enter your response here (Type integers or decimals. Do not round. Do not include the degree symbol in your answer.) Part 2 The test statistic is enter your response here. (Round to two decimal places as needed.) Part 3 The P-value is enter your response here. (Round to three decimal places as needed.) Part 4 Based on the P-value, there ▼ is is not sufficient evidence at a significance level of 0.01 to…

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