Answer:
a) 0.1587 b) 0.023 c) 0.1587 d) 1.15 e)-0.95
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 510
Standard Deviation, σ = 100
We are given that the distribution of SAT score is a bell shaped distribution that is a normal distribution.
Formula:
a) P(score greater than 610)
P(x > 610)
Calculation the value from standard normal z table, we have,
b) P(score greater than 710)
Calculating the value from the standard normal table we have,
c)P(score between 410 and 510)
d) x = 625
e) x = 415
Answer: P(A or B) = 22/26 or 11/13
Step-by-step explanation:All in all there are 26 pieces of clothing available. The probability of randomly selecting a blue piece is equal to 18/26. Also, the probability of picking up a pants is 14/26. There are 10 blue pants and the probability of picking up one of those is 10/26. The answer can be computed as follows:
P(A or B) = (18/26) + (14/26) - (10/26) = 22/26
P(A or B) = 22/26 or 11/13
Answer:
D. 1.4*10^-1 seconds
Step-by-step explanation:
We know that distance = rate * time
We know the rate = 3.00 • 10^8 meters per second
and the distance =4.2*10^7 meters
distance = rate * time
4.2*10^7 meters = 3.00 • 10^8 meters per second * time
Divide each side by 3.00*10^8
4.2*10^7 /3*10^8 = 3.00 • 10^8/3*10^8 * time
4.2*10^7 /3*10^8 = * time
4.2/3 * 10^7/10^8 = time
When we divide exponents of the same base, we subtract the exponents keeping the base
1.4 * 10^(7-8) = time
1.4 * 10^-1 seconds = time
6 is in the 6,000 because you don't see the rest of the numbers that have 6. only does the 6 is in the thousands.