## Equation of parabola with focus(F)at(-a,0):directrix is x=a. P(-x,y) is a point on parabola, equidistant from (-a,0)and B(a,y).NowPF=PB Using distance formula we get, y^2=4ax, but equation is y^2=-4ax

Subject: Maths, asked 3 days, 18 hours ago

## create your own five problems about random sampling where you will get the mean variance and standard deviation.HELP ME GUYS!I NEED ANSWER FOR THIS(;

Subject: Maths, asked 6 days ago

## a community has 1500 people with a mean age of 42 and the variance of 16 random sample of 30 people what are the mean variance and standard error of the sampling distribution of their ages

Subject: Maths, asked 3 weeks, 3 days ago

## 2. With the same distribution of women's height where the mean is 52.5in. And a standard deviation of 6.25in., what will be your new sample mean and standard deviation for a sample size of 100?

Subject: Maths, asked 4 weeks, 1 day ago

## I need help withthis please

Subject: Maths, asked 4 weeks, 1 day ago

## a telemarketing company that sells home owner insurance has found that 15% of all calls made to help hold leads to a sale of a home owner insurance policy .assume that each call independent of all other calls a)find the probability that no sales result from 12 calls

Subject: Maths, asked 4 weeks, 1 day ago

## a telemarketing company that sells home owner insurance has found that 15% of all calls made to help hold leads to a sale of a home owner insurance policy. Assume that each call is independent of all other calls. a)find the probability that no sales result from 12 calls b)What is the likelihood that fewer than tbree homeowners policies are sold in 15 calls?

Subject: Maths, asked 1 month, 1 day ago