Probability that average time spent per customer is in range

Assignment Help Basic Statistics

Reference no: EM13148117

The amount of time a bank teller spends with each customer has a mean of 3.10 minutes and standard deviation of 0.45 minutes. A random sample of 36 customers is selected. What is the probability that the average time spent per customer is between 2.9 and 3.2 minutes?

Reference no: EM13148117

Questions Cloud

Explain how tobacco mosaic virus was able to alter : suppose you found that molecule A, which had a molecular mass of 1500 daltons, was able to penetrate the channels of a gap junction, but molecule B, whose molecular mass was only 1200 daltons, was unable to diffuse between the same cells. how migh..

What are the factors which led m&s to internationalize : What are the factors which led M&S to internationalize

How many ml of 12m hcl is needed : A 500mL solution contains 1.68g NH3 and 4.05g (NH4)2SO4. How many mL of 12M HCl is needed to change the pH to 9.00?

How does radiation cause biological harm to bacteria : Based on their respective oxygen requirements, in which regions of the thioglycollate tubes do you expect to see growth of Microccocus luteus, Proteus vulgaris, and Clostridium perfringens?

Probability that average time spent per customer is in range : A random sample of 36 customers is selected. What is the probability that the average time spent per customer is between 2.9 and 3.2 minutes?

What would the concentration of lead be : There are 2.2 mg of lead in exactly 500 g of a water sample. What would the concentration of lead be in parts per million? Round to the nearest tenth. Don't forget the units

Determine temperature of gas inside and outside of sunspot : determine the temprature of the gas inside and outside of the sunspot

Deferred income tax liability for temporary difference : Assume a present and future enacted income tax rate of 30%. What amount should be added to Gore's deferred income tax liability for this temporary difference at December 31, 2011?

Probability-type two error accepting false null hypothesis : Suppose that the actual mean value in the population is , what is the probability of a Type II error (incorrectly accepting a false null hypothesis)?

User Account

All Pages