Answer:
We conclude that he used a paired two-sample t-test.
Step-by-step explanation:
We know that the student measuring how gasoline prices change records the cost of gas at 10 randomly selected stations in her hometown. One week later, she records the price again at the same 10 stations.
We conclude that he used a paired two-sample t-test.
Because at each gas station, the student measured the price of gas twice.
Answer: -1.5, negative, negative
Answer:
45.
Step-by-step explanation:
100% of a number is the number itself. So, 100% of 45 is 45.
Hope this helps!
Answer:
Water remaining in the pool after 141 days = 14,505 gallons
Step-by-step explanation:
Total number of gallons of water in the pool = 15,069
Rate of leakage of water = 4 gallons per day
Using unitary method
1 day leakage of water from the pool = 4 gallons
∴ In 141 days leakage of water from the pool will be = 
gallons
After leaking 564 gallons of water, total gallons of water that will remain in the pool will be = 
gallons
Since the decimal is 0.32 or 32 hundredths, you can automatically assume the fraction is 32/100.
This can be reduced by dividing by 2 to get 16/50.
16/50 can be reduced by 2 once again to get 8/25.
