Answer:
a-yes
b-3
Step-by-step explanation:
the numbers are all 3 apart
Answer:
- a) about 3.0%
- b) about 7×10^-6
Step-by-step explanation:
These sorts of calculations are best done with a calculator that knows statistics.
a) The z-value of the limit ofv interest is (45,000 -35,551)/(5100) ≈ 1.8743. The empirical rule tells you between 16 and 2.5% of the distribution will lie above a limit that is between 1 and 2 standard deviations. So, our calculator value of 3% is approximately correct.
b) The standard deviation of the sample mean is reduced by a factor of √75 from that of the parent distribution for a sample size of 75. Then the z-value is ...
... (38,000 - 35,441)/(5100/√75) ≈ 2559/588.90 ≈ 4.345
The probability of exceeding this valus is pretty small, about 6.95×10^-6.
The answer is (x+2)^2 - 28
Work:
x^2 + 4x - 19 = 5
x^2 + 4x - 24
(x^2 + 4x ) - 24
(x^2 + 4x + 4) -24 - 4
(x^2 + 4x + 4) - 28
(x + 2) -28
Answer:
sentence 2?
Step-by-step explanation:
sentence 1 provides background for the question, sentence 2 provides background for the graph, and sentence 3 is the question.
If you wanted the answer to the question:
8:4 = 2:1
There could only be 8 because 10 *8 is 80 and that is your maximum number you can have