Exponential distribution with mean

Reference no: EM131015221

1. You are interested in testing whether a particular brand of floppy disks has more than 5% defectives. A random sample of n = 325 disks contains 18 defectives.

(a) State the null and the alternative hypotheses.

(b) Conduct the test by computing a p-value.

2. The time between telephone calls at a company switchboard has an exponential distribution with mean of 3 minutes.

(a) Find the probability that the average of 45 of these times is less than 2.5 minutes.

(b) Find the 0.15 quantile for the average of 45 of these times.

Reference no: EM131015221

Questions Cloud

Find volume of solid if every cross section is perpendicular : A solid has a circular region in the xy- plane bounded by the graph of x2 + y2 = a2 with a > 0. Find the volume of a solid if every cross section is perpendicular to the x-axis is an equilateral triangle with one side in the base.

Describe the business practice in detail : Describe the business practice in detail. Compare the views of the country selected with that of the U.S. regarding the business practice. Why the business practice is considered illegal and unethical in the U.S. while it is considered legal and e..

Poisson process with an average arrival rate : Customers arrive at a queue according to a Poisson process with an average arrival rate of 4 per hour. (a) Find the probability of exactly three arrivals in 1 hour. (b) Find the probability of at least three arrivals in 2 hours.

What accounting standards exist that already effect banks : What must be known, estimated, and assumed to answer the research question? What would your recommendations be with respect to fair-value accounting standards for banks? Outline the basis of your recommendation.

Exponential distribution with mean : The time between telephone calls at a company switchboard has an exponential distribution with mean of 3 minutes. (a) Find the probability that the average of 45 of these times is less than 2.5 minutes.

Discuss the applicable ethical theory : Analyze your problem using a decision-making framework chosen from Module 2.

Poisson process of density three arrivals per minute : Customers arrive at a counter in accordance with a Poisson process of density three arrivals per minute. (a) What is the expected number of arrivals per minute?

What is the timeframe for using a loss carryback : What is your evaluation of the ethical issues that would arise as result of your boss refusing to approve the valuation allowance? What is your analysis of the stakeholders involved, and how will they be affected?

Indentifying the importance of strategic management : For this assignment, a mini strategic audit will be conducted for two companies with an overall goal to compare how each company differs in the strategy management and implementation, while indentifying the importance of strategic management.

User Account

All Pages