A direct mail company wishes to estimate the proportion of people on a large mailing list that will purchase a product. Suppose the true proportion is 0.07. If 343 are sampled, what is the probability that the sample proportion will be less than 0.11

The probability that the sample proportion will be less than 0.11 = .9982

Step-by-step explanation:

Given -

Suppose the true proportion is 0.07 .

true proportion = p = 0.07

q = 1 - p = 1 - 0.07 = 0.93  

n = 343

Standard deviation   =   =  = .0137

the probability that the sample proportion will be less than 0.11 =

  =     using[ ]

                     =  

                       =  .9982

none of the above.

for one of the equations to be used in the process, there has to be a term in the equation since squared is .

since there is only a term in the first equation, we cannot derive a from completing the square.

solving with completing the square

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: