Statistics of telemarketing phone calls

Assignment Help Basic Statistics

Reference no: EM1391764

On average, you receive 2 telemarketing calls per day. What is the probability that you will not receive any telemarketing calls today.

There is 0.4 probability that you will not receive a telemarketing phone call in one day. What is the expected number of telemarketing calls you will receive per day? What assumption do you make about the distribution?

The ABC company makes an electric appliance. The life of this appliance has a normal distribution with a mean of 72 months and a standard deviation of 9 months. The ABC company is to determine the warranty period of this appliance. If the appliance breaks down during the warranty period, the company will replace it free of charge. What should the warranty period be if the company does not want to replace more than 3% of the appliance?

Reference no: EM1391764

Questions Cloud

Confidence interval and population mean : Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean (to 2 decimals).

Sum of random variables : Suppose that the grams of fat have a normal distribution and form 90%, 95%, and 99% confidence intervals for the mean grams of fat. Based on this data, can we say that the labeling on the package is misleading?

Identifying organism : Identify three organism base on below result i already perform an acid fast staining and it demonstrate that a gram negative cocci.

Disadvantages of bringing in managers from outside : What are the relative advantages and disadvantages of bringing in managers from outside the sports industry versus bringing in managers with experience in the industry?

Statistics of telemarketing phone calls : On average, you receive 2 telemarketing calls per day. What is the probability that you will not receive any telemarketing calls today.

Average cost per night of a hotel room in new york city : The average cost per night of a hotel room in New York City is $273 (SmartMoney, March 2009). Assume this estimate is based on a sample of 45 hotels and that the sample standard deviation is $65.

Normally and non-normally distributed population : The majority of the data is basically distributed if there are enough subjects. For instance, if you collected test scores of only a few honor students, the data will most likely not be normally distributed because you would have a sample that did..

Probability of the part failing : Graph the p.d.f and show that the probability of the part failing in the first 200 weeks is 1/8

How would you characterize the role of each member : How would you characterize the role of each member of the Sternberg-Silverman-Friedman group

User Account

All Pages