Answer:
the answer is 71/2
Step-by-step explanation:
Point estimate for the difference between two population proportions is the difference between the two sample proportions, written as:

and the standard deviation is given by

When np and n(1-p) is greater than 5, then the sampling distribution is approximately normal and we can use standard normal methods.
Thus, the propability of a test <span>for the difference between two population proportions is given by

</span>
Answer:
$7.50
Step-by-step explanation:
set it up as a proportion:
amount she charges/number of kids= x/number of kids
4.50/3=x/5
Nope, 8ft is equal to 96 inches.
88.4*10^3 is = 88.4*10*10*10 =88400
Hope this helps! Any questions please just ask! Thank you!