The mean and standard deviation of the lifetime of a

The mean and standard deviation of the lifetime of a battery in a portable computer are 3.5 and 1.0 hours, respectively.

(a) Approximate the probability that the mean lifetime of 25 batteries exceeds 3.25 hours.

(b) Approximate the probability that the mean lifetime of 100 batteries exceeds 3.25 hours.

On january 1 2011 dean corporation signed a ten-year : on january 1 2011 dean corporation signed a ten-year noncancelable lease for certain machinery. the terms of the lease

Which of the following is true for a symmetrical : which of the following is true for a symmetrical distribution?a. mean modeb. median modec. the mean median and mode

What is the maximum temperature of the water at the bottom : the highest recorded waterfall in the world is found at angel falls in venezuela. its longest single waterfall has a

Calculate the thermal efficiency of the cycle and the net : consider an ideal steam regenerative cycle in which steam enters the turbine at 600 lbfin2 700 f and exhausts to the

The mean and standard deviation of the lifetime of a : the mean and standard deviation of the lifetime of a battery in a portable computer are 3.5 and 1.0 hours

The december 31 2009 balance sheet of schism inc showed : the december 31 2009 balance sheet of schism inc. showed long-term debt of 1.415 million 143000 in the common stock

At the 05 level test the claim that the proportion of : at the .05 level test the claim that the proportion of defects for cd burners is 0.3. a sample of 200 randomly selected

Show that the force required to do this is equal to the : a uniform chain of total mass m and total length l lies in a heap on a table. one end is pulled upwards at constant

Suppose that x and y are independent exponential random : consider the experiments first draw a poisson random variable n with parameter ?. then perform n independent bernoulli