Answer:
(2,-2)
Step-by-step explanation:
When over the y-axis you change the x axis to the opposite of either neg. or positive
Answer:
-37 due south
Step-by-step explanation:
Answer:
a.
Step-by-step explanation:
P(F or S) = P(F) + P(S) - P(F & S)
= 0.46 + 0.22 - 0.12
= 0.56
Answer:
Probability = 0.8444
Step-by-step explanation:
To solve this problem, we need to obtain the z-value which corresponds to the probability that the mean of a sample of 84 computers would differ from the population mean by less than 1.39 months
Let x' denote the mean life of the computer.
Mean = 88 months
Variance = 81
Thus, standard deviation = √81 = 9
Thus, we obtain;
P(|x - μ| < 1.39) = P(-1.39 > x < 1.39)
For x' = - 1.39,
z = -1.39/(9/√84)
z = -1.39/0.982
z = -1.42
For x' = 1.39,
z = 1.39/(9/√84)
z = 1.39/0.982
z = 1.42
Thus, P(|x - μ| < 1.39) =
P(−1.42 < z < 1.42)
From the Z-distribution tables i attached, we obtain ;
0.92220 - 0.07780 = 0.8444
Answer:
33
Step-by-step explanation:
33= 11 * 3
99= 11 * 3 * 3