Hello,
Answer A is the only finite set.
Given:
z = (x - μ)/σ = z value
x = independent variable = 11
μ = mean = 8
σ = standard deviation = 3
Solution:
X ~ N (8, 3)
For day 1, n = 5
P (X < = 11) = P (Z < = 11 – 8 / 3/Sqrt5) = P (Z <
=2.23) = 0.987126
For day 1, n = 6
P (X < = 11) = P (Z < = 11 – 8 / 3/sqrt6) = P (Z <
=2.45) = 0.992857
For both days:
P (X <= 11) = P (X <= 11) = (0.987126) (0.992857) =
0.9801
Answer:
(x+5^3 is the answer of this question
Answer: Average speed of boat = 32mph
Step-by-step explanation: Full question: 5 hours 20mins. Find the average speed of the boat
Let average speed of boat be mph
Let time to travel downstream = 80/(x + 8 )
Let time to travel upstream = 80/( x - 8)
Total time = 51/3 hrs=16/3 hrs
80/(x +8) +80/(x-8) = 16/3
Multiply both sides with3(×+8)(x-8)
(X+8)(x-8) = (x+8)(x-8)/16
15(2x)=x^2-64
X^2 -30x - 64 =0
Factorizing,you get
(x - 32)(x + 2) => ×=32 or x= -2
x = 32mph
Answer:
B) 53x + 74
Step-by-step explanation:
(59x + 64) - (6x - 10) = 59x + 64 - 6x + 10
= 53x + 74