I worked backwards to solve this question, my explanation and working out is
in the picture. If you need any clarification, just ask in the comments.
Answer:
4.5 usd
Step-by-step explanation:
$2 / 4 *9 =$4.5
hope this helps
Increasing the sample size by a factor of 4 or multiplying
it by 4 is equal to increasing the standard error by 1/2. Therefore, the
interval will be half as varied. This also works almost for population
averages as lengthy as the multiplier from the t-curve doesn't modify much when
increasing the sample size.
It’s quotient is the answer you get when you decide two numbers. These are both negative integers so you answer will be positive. Basically it is 10/5 which is 2