If you apply a linear transformation

to a random variable X, the mean and standard deviations change as follows:


So, the new mean is

and the new standard deviation is

Answer:
price of a sandwich = $7.50
Step-by-step explanation:
let the price of a sandwich be $x.
entire order cost= cost of chips+ 5×cost of sandwiches
= 1.25 + 5x
1.25 + 5x = 38.75
5x=38.75-1.25
5x=37.50
x=7.50
Answer:
0.02 m/sec
Step-by-step explanation:
26/30=0.89 —> 0.89 min —> 53.4 sec
42/50=0.84 meters
speed=0.84 / 53.4 = 0.015 m/sec = 0.02 m/sec
Answer:13/34
Step-by-step explanation:
Answer:
C. between 5 and 6 days
Step-by-step explanation:
divide 1611 by 305 and the answer is 5.28196721311. meaning it will take a little over 5 days to get to wherever he is going.