Answer:
There are many possibilities,
Test scores
Number of dollars donated to charity
The price of dinner at different restaurants
The number of students in a university class
The number of people in a restaurant
And the list goes on
9514 1404 393
Answer:
20 minutes
Step-by-step explanation:
The trains are separating at the rate of 80 +70 = 150 km/hour. The time required to be 50 km apart is then ...
time = distance/speed = (50 km)/(150 km/h) = 1/3 h = 20 minutes
Answer:
The answer to 1b is 2/3
Step-by-step explanation:
To solve any of these, follow the following steps.
1. Turn the percentage into a fraction.
50% * 1 1/3
1/2 * 1 1/3
2. Turn the mixed number into an improper fraction.
1/2 * 1 1/3
1/2 * 4/3
3. Multiply the numerators and the denominators.
1/2 * 4/3
4/6
4. Simplify the fraction
4/6
2/3
If you follow each of these steps you can complete each problem.
Answer:
c) (26.295, 28.705)
Step-by-step explanation:
We have that to find our 
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of 
.
So it is z with a pvalue of 
, so 
Now, find the margin of error M as such
In which 
is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 27.5 - 1.205 = 26.295 mi/gallon
The upper end of the interval is the sample mean added to M. So it is 27.5 + 1.205 = 28.705 mi/gallon
So the correct answer is:
c) (26.295, 28.705)
Answer:
5) 6r-1+6r=11
Step-by-step explanation:
if you add everything up you get that
