Answer: 645 cars
Step-by-step explanation:
Divide 172 by 4 to find the multiple which is 43 so if 4 was multiplied by 43 to get 172 taxis you must multiply 15 by 43 which gives 645
Answer:
158400 inches is 2 1/2 miles
Step-by-step explanation:
2.5* 5280 because 2.5 miles is 13200 feet.
13200*12 because 13200 feet is 158400 inches.
The answer would be 158400 inches.
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Answer:
Step-by-step explanation:
Let 
be the average of the sample, and the population mean will be 
We know that:
gr
Let 
be the standard deviation and n the sample size, then we know that the standard error of the sample is:
Where
In this case we are looking for:
This is:
or 
Now we get the z score
Looking at the tables for the standard nominal distribution we get
Answer:
y=25x+40.50 is not the equation of proportional relationship because if you were to graph the equation, the line would not go through the origin of the graph. You can tell beause of the y-intercept that is given in the equation, 40.50.
Step-by-step explanation:
If score of 3,540 points is 2 standard deviations above the mean score of 3,110, then:
3,110 + 2 s= 3,540
2 s = 3,540 - 3,110 = 430
s = 430 : 2
s = 215
Answer: A) The standard deviation is 215.
