200 meters per minute.
A minute is 60 seconds. 60 divided by 3 is 20. 20 Times 10 is 200.
B) because since the 40 cars averaged 49 mph it means that, that is the number that most cars have around the same speed of
Answer:
3125
Step-by-step explanation:
12.5x25x10
312.5x10
3125cm
so your answer will be D
Answer:
Step-by-step explanation:
The formula for determining the confidence interval for the difference of two population means is expressed as
Confidence interval = (x1 - x2) ± z√(s²/n1 + s2²/n2)
Where
x1 = mean sale amount for mail order sales = 82.70
x2 = mean sale amount for internet sales = 66.9
s1 = sample standard deviation for mail order sales = 16.25
s2 = sample standard deviation for internet sales = 20.25
n1 = number of mail order sales = 17
n2 = number of internet sales = 10
For a 99% confidence interval, we would determine the z score from the t distribution table because the number of samples are small
Degree of freedom =
(n1 - 1) + (n2 - 1) = (17 - 1) + (10 - 1) = 25
z = 2.787
Margin of error =
z√(s²/n1 + s2²/n2) = 2.787√(16.25²/17 + 20.25²/10) = 20.956190
Step-by-step explanation:
We know any line that is parallel to other line has same slope.
Here, m1=m2
So, slope will be -1/2.
