Answer:
45
Step-by-step explanation:
Answer 2/5. It says there are 5 people and 3 of them have done their hw and 2 have not cause 5-3=2.
The range for Week 1 equals he range for Week 2 is the true statement.
Answer: Option A.
<u>Step-by-step explanation:</u>
Median is the middle number of an ordered list.
75 is the median for Week 1 and Week 2.
The range is the difference between highest and lowest value for the given number series.
The highest and lowest value of the series for both Week 1 and Week 2 is same.
Lowest value =62.
Highest value =89.
∴ The range for Week 1 and Week 2 = 89-62.
The range for Week 1 and Week 2 = 27.
∴The range for both Week 1 and Week 2 remains the same.
ANSWER
Linear positive association
EXPLANATION
As the values of x are increasing, the values of y are also increasing.
We can actually find the slope of this curve to be,

We can see that the slope is positive.
This indicates a linear positive association between x and y.
The correct choice is A.
Answer:
a) 0.1558
b) 0.7983
c) 0.1478
Step-by-step explanation:
If we suppose that small aircraft arrive at the airport according to a <em>Poisson process</em> <em>at the rate of 5.5 per hour</em> and if X is the random variable that measures the number of arrivals in one hour, then the probability of k arrivals in one hour is given by:
(a) What is the probability that exactly 4 small aircraft arrive during a 1-hour period?
(b) What is the probability that at least 4 arrive during a 1-hour period?
(c) If we define a working day as 12 hours, what is the probability that at least 75 small aircraft arrive during a working day?
If we redefine the time interval as 12 hours instead of one hour, then the rate changes from 5.5 per hour to 12*5.5 = 66 per working day, and the pdf is now
and we want <em>P(X ≥ 75) = 1-P(X<75)</em>. But
hence
P(X ≥ 75) = 1-0.852 = 0.1478