Which of the following is true of probability sample sizes? the shorter the variability in the data being estimated, the larger the sample size needed the higher the level of confidence desired, the smaller the sample size needed the population standard deviation is a measure of the dispersion of the population, and its square root is referred to as the population variance the smaller the desired error, the smaller the sample size the more precise the required sample results, the larger the sample size

step-by-step explanation:

vwhat effect does the word head have on the meaning of this passage?

a. it demonstrates how intelligent he was.

b. it shows he was a favorite of the teachers.

c. it indicates he would be a good preacher.

d. it reveals how self-important he was.

how does the choice of the word head contribute to the passage’s tone?

a. it offers a sense of entitlement.

step-by-step explanation:

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: