Twenty percent of american households own three or more cars. a random sample of 144 american households is selected. let x be the number of households selected that own three or more cars. using the normal approximation, the probability that at least 34 of the households selected own at least three or more cars is

The probability is 0.163

Explanation:

We will use the normal approximation formula for the calculation. If we have that p = 0.20, n = 144, x = 34. We will use Excel to perform the calculation:

If P(x at least 34) = 1 - P(33 or less)

using the binomial formula we have to:

P(x at least 34) = 1 - binomcdf(n,p,largest x value) = 1 - binomcdf(144,0.2,33) = 0.163

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2