Government regulations restrict the amount of pollutants that can be released to the atmosphere through industrial smokestacks. To demonstrate that their smokestacksare releasing pollutants below the mandated limit of 8 parts per billion pollutants, REM Industries collects a random sample of 29 readings. The mean pollutant level forthe sample is 7.65 parts per billion with a population standard deviation of 0.8 parts per billion. Do the data support the claim that the average pollutants produced byREM Industries are below the mandated level at a 0.10 significance level? Assume the population of readings is approximately normally distributed.Step 2 of 3: Compute the value of the test statistic. Round your answer to two decimal places.

From the question, we can identify the following values:Sample size (n) = 29Sample mean (x̄) = 7.65…

Answered: Government regulations restrict the…

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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Government regulations restrict the amount of pollutants that can be released to the atmosphere through industrial smokestacks. To demonstrate that their smokestacks are releasing pollutants below the mandated limit of 5 parts per billion pollutants, REM Industries collects a random sample of 23 readings. The mean pollutant level for the sample is 4.45 parts per billion with a population standard deviation of 1.3 parts per billion. Do the data support the claim that the average pollutants produced by REM Industries are below the mandated level at a 0.01 significance level? Assume the population of readings is approximately normally distributed. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Hop 5 H₂H. a 5
Government regulations restrict the amount of pollutants that can be released to the atmosphere through industrial smokestacks. To demonstrate that their smokestacks are releasing pollutants below the mandated limit of 8 parts per billion pollutants, REM Industries collects a random sample of 15 readings. The mean pollutant level for the sample is 7.65 parts per billion with a population standard deviation of 0.9 parts per billion. Do the data support the claim that the average pollutants produced by REM Industries are below the mandated level at a 0.05 significance level? Assume the population of readings is approximately normally distributed. Step 1 of 3: State the null and alternative hypotheses for the test. Fill in the blank below. Họ : a = 8 Ha 8
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You may need to use the appropriate appendix table or technology to answer this question. A magazine conducts an annual survey with higher values indicating better service. A sample of 34 ships that carry fewer than 500 passengers resulted in an average rating of 85.33, and a sample of 44 ships that carry 500 or more passengers provided an average rating of 81.80. Assume that the population standard deviation is 4.55 for ships that carry fewer than 500 passengers and 3.97 for ships that carry 500 or which readers rate their favorite cruise ship. All ships are rated on a 100-point scale, more passengers. (a) What is the point estimate of the difference between the population mean rating for ships that carry fewer than 500 passengers and the population mean rating for ships that carry 500 or more passengers? (Use smaller cruise ships - larger cruise ships.) (b) At 95% confidence, what is the margin of error? (Round your answer to two decimal places.) (c) What is a 95% confidence interval…
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In nutrition, the recommended daily allowance of vitamins is a number set by the government as a guide to an individual's daily vitamin intake. Actually, vitamin needs vary drastically from person to person, but the needs are very closely approximated by a normal curve. To calculate the recommended daily allowance, the government first finds the average need for vitamins among people in the population, and the standard deviation. The recommended daily allowance is then defined as the mean plus 2.5 times the standard deviation. What is the recommended daily allowance for a vitamin with mean u and standard deviation o? recommended daily allowance =

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