Find value of population mean is parts per million

Reference no: EM13146016

A study of pollutants showed that certain industrial measures should not on average exceed 2.5 parts per million. It has been claimed that a particular company may be exceeding this level. To test the claim, a random sample of 15 air tests is taken. The sample has a mean of 3.07 parts per million. Assume that the population standard deviation for this kind of test is known to be 1 part per million. The testers need to perform a hypothesis test to decide whether the sample provides sufficient evidence that the prescribed upper limit of 2.5 parts per million is in fact being violated.The test must be performed at the 5% level of significance.

(a) According to the null hypothesis, the value of the population mean is parts per million. (Answer in the form of a number with two decimal places x.xx)

Reference no: EM13146016

Questions Cloud

Compare the osmotic concentration of the blood : Kidney failure causes a build up of waste and water in the blood, A procedure called hemodialysis removes these substances from the blood, During the procedure.

Minimum transfer price under different situations : The following facts are available regarding the Personal Computer (PC) Division. Selling price of standard circuit board $57 Variable cost of standard circuit board 30 Additional variable cost of special circuit board 21 Determine minimum transfer pr..

Stock and building basis after the redemption : Fred Farmer and his two sons owned 100 percent of Fruits and Nuts, Inc. Fred owned 50 percent of the stock, but he had 25 percent redeemed by the corporation for a building with a basis of $10,000 and a value of $50,000. If E&P is $200,000 and Fre..

What volume will 500 ml of gas occupy : What volume will 500 mL of gas at 20°C and a pressure of 420 mm Hg occupy if the temperature is reduced to -80°C and the pressure increased to 650 mmHg?

Find value of population mean is parts per million : The test must be performed at the 5% level of significance. According to the null hypothesis, the value of the population mean is parts per million.

Describe the process of glycolysis : Describe the control mechanism of cellular respiration as it pertain to the Kreb's cycle?

Importance of factoring in a quality program : Considering the importance of factoring in a quality program into the businesses strategic planning, what companies do you think would benefit from adding a Total Quality Management program to their strategic planning?

Participate in a class discussion to create a checklist : Participate in a class discussion to create a checklist of matters that should be addressed in an office lease.

Determining the current and future needs and preferences : Determining the current and future needs and preferences, attitudes, and behavior of the market. Assessing changes in the business environment that may affect the size and nature of the market in future.

User Account

All Pages