Normal probability-average cost of renting

Reference no: EM13100707

The average cost of a renting a compact size car in a major metropolitan area is R51.74 with a standard deviation of 7.48. Assume a normal distribution. If a sample of 20 cities is taken, what is the probability that the sample mean will fall between 47.74 and 55.74

Reference no: EM13100707

Questions Cloud

Question-poisson distribution : Do you think the Poisson distribution, which assumes independent arrivals, is a good estimation of arrival rates in the following queuing systems? Defend your position in each case.

Does the change in speed of the downward-moving rock : Does the change in speed of the downward-moving rock agree with the magnitude of the speed change of the rock moving upward between the same elevations? Explain physically why it does or does not agree.

Determining 90 percent confidence interval : The Ajax Corporation would like to know the average age of its employees. The average age of a sample of 100 employees is 28 years with a standard deviation of 6.5 years.

Rejecting the officials claim : A state transportation official claims that the mean waiting time at exit booths from a toll road near the capitol is no more than .40 minutes. for a sample of 35 motorists exiting the toll road, it was found that the mean waiting time was .46 min..

Normal probability-average cost of renting : The average cost of a renting a compact size car in a major metropolitan area is R51.74 with a standard deviation of 7.48. Assume a normal distribution.

Find the number of moles of gas : A rigid tank contains 1.40 moles of an ideal gas. Determine the number of moles of gas that must be withdrawn from the tank to lower the pressure of the gas from 27.2 atm to 5.90 atm. Assume the volume of the tank and the temperature of the gas re..

Estimate the proportion of prospective customers : The Luxor Computer Company plans to introduce a pyramid-shaped desktop computer. The company is interested in the proportion of prospective customers who find the unusual shape a positive selling point.

Probality of understanding uncertainty : Marie claims she can predict the sex of pregnant women's babies for first-time new mothers. She sees 1000 women a year, and she always predicts a female. She charges $1000 for a prediction

Normal probability-sampling distribution of sample mean : Given a normal distribution with a population mean of 100, a standard deviation of 10 and a sample size of n = 25, what is the probability that X is

User Account

All Pages