H: u> 25.7.Assume that the air filter changes are effective. Which type of error is impossible?O Type IO Type IIQUESTION 33A test is made of Ho = 47 versus H:u> 47. A sample of size n= 69 is drawn, and x=48. The population standard deviation is a = 27.Compute the value of the test statistic z.O 0.62O 1.60O 0.04O 0.31QUESTION 34Determining the number of people from the state of Alaska who voted for a Republican in the last election is an example ofmeasurement.MacBook AirDII2446.フQERTYDFGKCMnmandしのつ

Answered: Image /qna-images/answer/98781ec5-670a-4df2-ac7b-52ac1dd4a13d.jpg

Answered: QUESTION 33 A test is made of H µ= 47…

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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Pls answer Number 2 with solution , thank u!
5.58 The concentration of mercury in a lake has been monitored for a number of years. Measurements taken on a weekly basis yielded an average of 1.20 mg/m (milligrams per cubic meter) with a standard deviation of .32 mg/m. Following an accident at a smelter on the shore of the lake, 15 measurements produced the following mercury concentrations. 1.60 1.77 1.61 1.08 1.07 1.79 1.34 1.07 1.45 1.59 1.43 2.07 1.16 0.85 2.11 ES ABOUT POPULATION CENTRAL VALUES a. Give a point estimate of the mean mercury concentration after the accident. b. Construct a 95% confidence interval on the mean mereury concentration after the accident. Interpret this interval. c. Is there sufficient evidence that the mean mercury concentration has increased since the accident? Use a = .05. d. Assuming that the standard deviation of the mercury concentration is .32 mg/m. calculate the power of the test to detect mercury concentrations of 1.28, 1.32. 1.36, and 1.40.
Find the indicated IQ score. The graph to the right depicts IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15. The indicated IQ score is (Round to the nearest whole number as needed.) si 0.2525 Q
Consider a set of data in which the sample mean is 27 and the sample standard deviation is 6.2. Calculate the z-score given that x = 28.5. Round your answer to two decimal places. An
Calcium levels in people are normally distributed with a mean of 9.7 mgdL and a standard deviation of 0.5 mgdL . Individuals with calcium levels in the bottom 10% of the population are considered to have low calcium levels. Find the calcium level that is the borderline between low calcium levels and those not considered low. Carry your intermediate computations to at least four decimal places. Round your answer to one decimal place.
A sample of 6 sheets of cardstock is randomly selected and the following thicknesses are measured in millimeters. Give a point estimate for the population standard deviation. Round your answer to three decimal places. 1.82, 1.67, 1.87, 1.79, 1.79, 1.73
The average life span of one particular brand of refrigerator is 12 years with a standard deviation of 0.8. Find the percentage of the refigerators that last between 10 and 14.5 years. O 99.3% 99.9% 95.9% 97.8% ▶
Watch your cholesterol: A sample of 290 patients between the ages of 38 and 82 were given a combination of drugs ezetimibe and simvastatin. They achieved a mean reduction in total cholesterol of 0.85 millimole per liter. Assume the population standard deviation is o =0.18. Answer the following question.
Temperature is used to measure the output of a production process. When the process is in control, the mean of the process is = 120 and the standard deviation is σ=0.7. a. Construct the chart for this process if samples of size 6 are to be used (to 2 decimals). UCL = LCL = b. Is the process in control for a sample providing the following data? 129.1 128.6 129.1 129.0 = 128.5 128.5 (to 2 decimals) Conclude that the process - Select your answer - in control. c. Is the process in control for the following data? 128.3 128.2 129.1 129.5 128.1 129.2 (to 2 decimals) Conclude that the process - Select your answer - in control.
Men Women μ μ1 μ2 n 11 59 x 97.72 97.34 s 0.83 0.63 A study was done on the body temperatures of men and women. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed? populations, and do not assume that the population standard deviations are equal. Complete parts? (a) and? (b) below. Use a 0.05 significance level to test the claim that men have a higher mean body temperature than women. a. What are the null and alternative hypotheses? The test statistic, t, is The P-value is State the conclusion for the test. b. Construct a confidence interval suitable for testing the claim that the two samples are from populations with the same mean.

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