Suppose that
42% of students of a high school play video games at least once a month. The computer programming club takes an SRS of
30
students from the population of
792
students at the school and finds that
40
%
of students sampled play video games at least once a month. The club plans to take more samples like this.
Let
p
^
p
^

p, with, hat, on top represent the proportion of a sample of
30
3030 students who play video games at least once a month.
What are the mean and standard deviation of the sampling distribution of
p
^
p
^

p, with, hat, on top?

there are no answer choices

step-by-step explanation:

i those same problems in math and dont know how to do them

hello!

to begin with, we're given that on earth, a rock weighs 20 pounds, and while on jupiter, that same rock weighs 42 pounds. now, we're trying to find the weight of a rock that weighs 10.5 pounds on earth, on jupiter.

to solve this, first, set up a proportion, cross-multiply, and solve it algebraically.

setting up the proportion is the hardest and the most confusing part of the problem, but it's simple.

if on earth, the rock weighs 20 lbs, and on jupiter it weighs 42 lbs, our first part of our proportion is 20/42 lbs. the second part has to be equal to each other. this means that 10.5 has to be on the numerator of the fraction, and x, the value we're trying to find, has to be on the denominator. remember that the rock weighs 10.5 lbs on earth, and we're trying to find the weight of it on jupiter (which is x).

20/42 = 10.5/x

next, you would cross-multiply.

20x = 42(10.5)

20x = 441

now, solve it algebraically by using division.

x = 22.05 lbs

this can be rounded to 22.1 lbs.

therefore, the weight of the rock on jupiter is 22.1 lbs, the fourth choice.

wow ok so the answer is 1k or just k

because of combining like terms xd