Answer:
A reflection over the x-axis
Step-by-step explanation:
She practiced 630 hours in all because you multiply 18x35
The dad had 6 more hours remaining to drive
Answer:
I have appsolutaly no idea but I'm sure you'll figure it out if not try googling it out
Answer: 
Step-by-step explanation:
An null hypothesis (
) is a statement of equality which shows that there is no statistical difference between the groups being tested.
An alternative hypothesis (
) is a statement of inequality which shows that there is statistical difference between the groups being tested.
Let
be the population mean amount of garbage per bin .
Given : A sanitation supervisor is interested in testing to see if the mean amount of garbage per bin is different from 50.
i.e.
→ Alternative
Thus , the appropriate null and alternative hypotheses :
