What is the probability all four calls are infact emergency

Reference no: EM1317505

Find the required probability and sample size for the binomial distribution.

Public Safety: 911 Calls the Denver Post reported that a recent audit of the Los Angeles 911 calls showed that 85% were not emergencies. Suppose that the 911 operators in Los Angeles have just received four calls.

a) What is the probability all four calls are in fact emergencies?

b) What is the probability that three or more calls are not emergencies?

c) How many calls n would the 911 operators need to answer to be 96% (or more) sure that at least one call was in fact an emergency?

Reference no: EM1317505

Questions Cloud

The standard deviation of an efficient portfolio : When the Sharpe Ratio for the market portfolio is 0.5, what risk-free rate Rf is the market anticipate? Draw on a diagram for the Capital Market Line derived from the above data. Make sure to clarify the intercept and the slope.

Three different quadratic functions : Three different quadratic functions.

What is the probability that the students in the sample : The student body of a large university comprises 60% female students. Elucidate what is the probability that the students in the sample exactly two are female?

What should be expected return of stock x : A portfolio p of consisting 60% of stock X and 40% of stock Y, has a correlation ρpM = 0.62 with the market. What is the portfolio volatility? Statement on the diversification effect.

What is the probability all four calls are infact emergency : Illustrate what is the probability all four calls are infact emergencies. Illustrate what is the probability that three or more calls are not emergencies.

Explain how many cars would required to go : Explain how many cars would required to go by the speed trap to be 99.8% sure which at least one driver will warm oncoming traffic of the speed trap.

Describ why benzylic and allylic halides undergo recation : Evaluate the electronic configuration for ionization energies of Magnesium, the orbital number in which the electrons are added in phosphorus ion, and the one will lose in the ionization of Alluminium.

Find the method to remedy multicollinearity : What can be completed to remedy multicollinearity.

Calculating the minimum or maximum value from the function : Calculating the minimum or maximum value from the function

User Account

All Pages