Answer:
D
Step-by-step explanation:
vertically stretched is on the outside of the |x| and has to be grater than 1
1/2 + 1/3 = 3/6 + 2/6 = 5/6.....so 5/6 of the total marbles are red and white.
That means 1/6 are blue. So if 6 are blue, then 1/6 of the total marbles = 6
1/6x = 6
x = 6 * 6/1
x = 36.....there are 36 total marbles
1/2 are red.....so 1/2(36) = 36/2 = 18 are red
1/3 are white......1/3(36) = 36/3 = 12 are white
and 6 are blue.
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
5 * 8/45=8/9
8/9 * 3/40=1/15
1/15
The answer is 10 for Plato users, 15 plus 5 divided by 2 = 10