Answer:
Step-by-step ex snsmsndjsnshsushdidjdplanation:
The mean time it takes to walk to the bus stop is 8 minutes (with a standard deviation of 2 minutes) and the mean time it takes for the bus to get to school is 20 minutes (with a standard deviation of 4 minutes). The distributions are normal.
a. How long will it take (in minutes), on average, to get to school?
b. What is the standard deviation of the trip to school?
c. What is the probability that it will take longer than 30 minutes to get to school?
Due to a miscalculation, you realize it actually takes an average of 10 minutes to walk to the bus stop.
d. How long will it take (in minutes), on average, to get to school?
e. What is the standard deviation of the trip to school?
f. What is the probability that it will take longer than 30 minutes to get to school?
The only ones I need help with is C and F. I have the answer for the rest of them. Can someone please help me with parts C and F??
Answer:
area 12.566
circumference 12.566
Step-by-step explanation:
Answer:
(1+i)2=2i
Step-by-step explanation:
Since the 2 is on the outside of the) then that means it is multiplying and if you multiply 1x2 it will equal.2
<u>Then if you were to multiply 2 x the i it will get 2i then you add it to get 2i</u>
Answer:
the length of the third side is 12.1m
Step-by-step explanation:
by Pythagoras we know the relationship of the sides of a rectangular triangle that is given by the formula h^2 = l1^2 + l2^2
h = hypotenuse = 14m
l1 = leg1 = 7m
l2 = leg2
h^2 = l1^2 + l2^2
14^2 = 7^2 + l2^2
196 = 49 + l2^2
196 - 49 = l2^2
147 = l2^2
√147 = l2
12.124 = l2
rounding to the nearest tenth
l2 = 12.1
