State the null hypothesis and the alternative hypothesis

Assignment Help Mathematics

Reference no: EM13206254

An independent consumer group published its finding that the lifetimes of electric bulbs manufactured by BIG Corporation are approximately normally distributed with a mean of days and a standard deviation of . BIG Corporation claims that the standard deviation of its electric bulbs is less than . Suppose that we want to carry out a hypothesis test to see if BIG Corporation's claim is correct. State the null hypothesis and the alternative hypothesis that we would use for this test.

Reference no: EM13206254

Questions Cloud

Determine the time t it will take for the sample to decay : The half-life of radioactive radium is 1620 years. Suppose that a sample of this substance has 300 mg. Determine the time T it will take for the sample to decay to a mass of 200 mg.

What is the length and what is the width : if the length of a perimeter is 174 in and the length exceeds the width by 35 in what is the length and what is the width?

What is a placebo and placebo effect : What is a placebo? How do placebos work - what generates the "placebo effect? In testing a therapeutic drug, what exactly does a "drug versus placebo trial" test?

Why do economists pay more attention to national economies : Discuss the differences between unemployment and underemployment and give examples of each. Include in your contribution the differences between fiscal and monetary policy and how each would be used to reduce high levels of unemployment.

State the null hypothesis and the alternative hypothesis : State the null hypothesis and the alternative hypothesis that we would use for this test.

State the residue was washed with hot distilled : How would the following modifications of the experimental procedure used in this experiment affect the mass of the precipitate collected? Indicate whether the mass would be greater than, unchanges, or less than that obtained. Briefly explain the ..

Find that rosalie had left for the evening : Jonathan accepted the offer and, eager to please her, spent lavishly in preparing for the evening. His purchases included a new blazer, new shoes, and expensive floral arrangement, and champagne. At the appointed time, Jonathan arrived at Rosalie'..

Micro and macro human service practice : What are some of the differences between micro and macro human service practice, with regard to goals and intervention strategies?

Estimate the area under the graph : Estimate the area under the graph of f(x)=3x2-24x+50 over the interval [0,5] using ten approximating rectangles and right endpoints.

User Account

All Pages