Your answer would be either A...or D.
Answer:
b. Do not reject H0. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.7 hours.
Step-by-step explanation:
Given that in a study of computer use, 1000 randomly selected Canadian Internet users were asked how much time they spend using the Internet in a typical week. The mean of the sample observations was 12.9 hours.
(Right tailed test at 5% level)
Mean difference = 0.2
Std error =
Z statistic = 1.0540
p value = 0.145941
since p >alpha we do not reject H0.
b. Do not reject H0. We do not have convincing evidence that the mean weekly time spent using the Internet by Canadians is greater than 12.7 hours.
<span>A.) 18 feet in 20 minutes
B.) 90 feet in 2.5 hours
C.) 20 yards in 1.5 hours
D.) 3.6 yards in 15 minutes
</span>
A) 18/20=0.9 ft per min
B) 2.5 hours equals 150 minutes . 90/150=0.6 ft per min
C) 20 yds = 60 ft 1.5 hours = 90 minutes 60/90≈0.67 ft per min
D) 3.6 yds = 10.8 ft 10.8/15=0.72
Therefore the fastest would be 0.6 ft per minute therefore, choice
B) 90 feet in 2.5 hours
Answer: Each candy costs and each drink costs
Step-by-step explanation:
We are told Dominic bought 2 drinks and 5 candies, costing a total of :
(1)
Then, we are told Colton bought 8 drinks and 7 candies, costing a total of :
(2)
Now we have a system with two equations ans two unknowns. Let's solve it:
Multiplying (1) by -4:
(3)
Summing (2) and (3):
(4)
Isolating :
(5) This is the cost of each candy
Substituting (5) in (1):
(6)
Isolating :
(7) This is the cost of each drink
Answer:
He can drive 481 miles if David rents his car for three days
Step-by-step explanation:
This is true because if you take the 24.95 and multiply it by 3, because he rented it for three days, you'll get 74.85. Then you'll subtract 200 (the total money that can be spent) by 74.85 you'll get 125.15. Divide the remaining number, 125.15 by 0.26 to get 481.34. Take the decimals away because you don't need it, if you want to be sure it's correct you can multiply 481 by 0.26 to get 125.05 which is lower than 125.15 so it good because if you use 482 besides 481 it will be higher than the amount of money David can spend, that's why 481 is the right answer.