08:Pretest 08:Hypothesis Testing15. Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim.The manufacturer of a refrigerator system for beer kegs produces refrigerators that are supposed to maintain a true mean temperature, µ, of 49°F,ideal for a certain type of German pilsner. The owner of the brewery does not agree with the refrigerator manufacturer, and claims he can prove thatthe true mean temperature is incorrect. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the nullhypothesis, state the conclusion in nontechnical terms.There is sufficient evidence to support the claim that the mean temperature is different from 49°F.There is not sufficient evidence to support the claim that the mean temperature is different from 49°F.There is sufficient evidence to support the claim that the mean temperature is equal to 49°F.There is not sufficient evidence to support the claim that the mean temperature is equal to 49°F.Description15 of 25Şubmit

It is given that the null hypothesis is rejected.

Answered: 08:Pretest 08:Hypothesis Testing 15.…

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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This activity involves testing a hypothesis about a population mean, μμ We will test a hypothesis about the volumes of Coke, Diet Coke, Pepsi or Diet Pepsi. The claim by the manufacturers is that the average volume of soda is at least 12 ounces. Assume that the population standard deviation, σ,σ,is known to be 0.01 ounces. 1. Decide the significance level you are going to use to test. 2. Determine the mean (average) and the standard deviation of the volume of your soda. 3. Complete the calculations below and graph. Step 1: H0H0: μμ_________________ HαHα: μμ________________ (make sure you put in the appropriate symbols, values and labels) Step 2: α=α=_________________ Step 3: Critical value(s): za=za=_______________ Step 4: Graph, label and shade the critical regions and label the critical values. Step 5: Test statistic (show all steps) : z=x′−μσn√=z=x′−μσn= Calculate: mean:…
What is the minimum percentage of data values that will come within 3.5 standard deviations from the mean? а. 84% • b. 92% с. 60% d. 75%
A nutritionist claims that the mean tuna consumption by a person is 3.6 pounds per year. A sample of 80 people shows that the mean tuna consumption by a person is 3.3 pounds per year. Assume the population standard deviation is 1.23 pounds. At α=0.09, can you reject the claim? Question content area bottom Part 1 (a) Identify the null hypothesis and alternative hypothesis. A. H0: μ≤3.6 Ha: μ>3.6 B. H0: μ≠3.3 Ha: μ=3.3 C. H0: μ>3.6 Ha: μ≤3.6 D. H0: μ=3.6 Ha: μ≠3.6 E. H0: μ>3.3 Ha: μ≤3.3 F. H0: μ≤3.3 Ha: μ>3.3 Part 2 (b) Identify the standardized test statistic. z=enter your response here (Round to two decimal places as needed.) Part 3 (c) Find the P-value. enter your response here (Round to three decimal places as needed.) Part 4 (d) Decide whether to reject or fail to reject the null hypothesis. A. Fail to reject H0. There is not sufficient evidence…
To compare the dry braking distances from 30 to 0 miles per hour for two makes of automobiles, a safety engineer conducts braking tests for 35 models of Make A and 35 models of Make B. The mean braking distance for Make A is 43 feet. Assume the population standard deviation is 4.6 feet. The mean braking distance for Make B is 46 feet. Assume the population standard deviation is 4.5 feet. At α=0.10, can the engineer support the claim that the mean braking distances are different for the two makes of automobiles? Assume the samples are random and independent, and the populations are normally distributed. The critical value(s) is/are Find the standardized test statistic z for μ1−μ2.
Exercise 11 In each problem, ünderline the population standard deviation/sample standard deviation and circle the number of samples. 1. A sample of 160 people has a mean age of 27 with a population standard deviation (o) of 5. Test the hypothesis that the population mean is 26.7 at a=0.05. 2. An electric lamps manufacturer is testing a new production method that will be considered acceptable if the lamps produced by this method result in a normal population with an average life of 1,300 hours and a standard deviation equal to 120. A sample of 100 lamps produced by this method has an average life of 1,250 hours. 3. The cholesterol levels in a certain population have mean of 210 and standard deviation 21. The cholesterol levels for a random sample of 9 individuals are measured and the sample mean x is determined. What is the z-score for a sample mean x=180? 4. Mabunga Elementary School has 1,000 students. The principal of the school thinks that the average IQ of students at Mabunga is at…
Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim. The manufacturer of a refrigerator system for beer kegs produces refrigerators that are supposed to maintain a true mean temperature, . of 48"F, ideal for a certain type of German piluner The owner of the hrewery does not agree wth the refrigerator manufacturer, and claims he can prove that the true mean temperature is incorrect. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusaon in nontechnical terms. O There is sufficient evidence to support the claim that the mean temperature is different from 4S'F. There is sufficient evidence to support the claim that the mean temperature is equal to 45F. O There is not sufficient evidence to support the claim that the mean temperature is equal to 45'F. O There is not sufficient evidence to support the claim that the mean temperature is different from 48°F.
Perform at-test (significance level a - 0.0s) to test your null hypothesis and compare syatelic blood pressure values measured in the sitting down and standing up position. Enter the degrees of freedom, t-values and p-values for both tests in the table below. Provide all values to 3 significant gures. Hint: Use a paired t-test. Systolic (mmHg)standing (mmHg)sitting Systolic 137 151 129 143 127 116 120 110 125 115 117 118 119 116 135 136 132 116 161 135 118 116 130 133 107 126 98 107 112 111 123 132 111 141 122 123 124 122 97 104
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Claim: The mean systolic blood pressure of all healthy adults is less than than 125 mm Hg. Sample data: For 266 healthy adults, the mean systolic blood pressure level is 124.47 mm Hg and the standard deviation is 15.29 mm Hg. The null and alternative hypotheses are Ho: μ = 125 and H₁: µ< 125. Find the value of the test statistic. C The value of the test statistic is. Round to two decimal places as needed.) ple Get more help - A X Question 6 (0/1) ✓ Question 10 (1/1) Question 7 (0.67/1) 4 Clear all Check answe Question 8 (0.67/1)

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