Answer:
62
Step-by-step explanation:
A. -6+2y
Step-by-step explanation:
-2×3-2×(-y)
multiply the numbers
-6-2×(-y)
multiplying two negatives equals a positive
-6+2y
Answer:
a) P(79 <= P <= 81) = 0.9968
b) P( X > 81 ) = 0.0002
Step-by-step explanation:
mean value = 75 GPa
standard deviation = 1.7 GPa
<u>a) Determine P(79 <= P <= 81) </u>
given that : n = 25
attached below is the detailed solution
P(79 <= P <= 81) = 0.9968
<u>b) Determine how likely the sample mean diameter will exceed 81 </u>
given that n = 36
mean diameter = 81
P( X > 81 ) = 0.0002
Answer:
Step-by-step explanation:
Blue