(0, 9) represents the y-intercept of the graph.
Since the slope is 1/3, this means that y will rise 1 for every 3 that x runs.
The points that can be used to make a line in this graph are (3, 10) and (6, 11).
Answer:
Whichever one shows >24
Step-by-step explanation:
Which ever one that is greater than 6
Answer:
checking account A is the better deal.
Step-by-step explanation:
A charges a monthly service fee = $12.00
Wire transfer fee = $10.50
B charges a monthly service fee = $21.00
Wire transfer fee = $8.50
If the requirement is four wire transfer per month
A charges for 4 wires = 10.50 × 4 = $42.00
and adding monthly service fees = 42.00 + 12.00 = $54.00
B charges for 4 wires = 8.50 × 4 = $34.00
and adding monthly service fees = 34.00 + 21.00 = $55.00
Therefore A charges less than B, so checking account A is the better deal.
Answer:
Step-by-step explanation:
We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean
For the null hypothesis,
µ = 17
For the alternative hypothesis,
µ < 17
This is a left tailed test.
Since the population standard deviation is not given, the distribution is a student's t.
Since n = 80,
Degrees of freedom, df = n - 1 = 80 - 1 = 79
t = (x - µ)/(s/√n)
Where
x = sample mean = 15.6
µ = population mean = 17
s = samples standard deviation = 4.5
t = (15.6 - 17)/(4.5/√80) = - 2.78
We would determine the p value using the t test calculator. It becomes
p = 0.0034
Since alpha, 0.05 > than the p value, 0.0043, then we would reject the null hypothesis.
The data supports the professor’s claim. The average number of hours per week spent studying for students at her college is less than 17 hours per week.
