According to a survey, 25.4% of credit-card-holding families in a certain area hardly ever pay off the balance. suppose a random sample of 20 credit-card-holding families is taken. find the probability that at least 4 families hardly ever pay off the balance.

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.

it would be 3 ÷by 6 because the number on each side

b.   e = 7.5h

hope this , lovely!