Answer:
Step-by-step explanation:
The mean income for people in a certain city (in thousands of dollars) is 37 with standard deviation 80 (thousands of dollars). A pollster draws a sample of 45 people to interview.
A. What is the probability that the mean income of the sample people is more than 24 (thousands of dollars)?
B. What is the probability that the sample mean income is between 41 and 45?
C) Find the 80th percentile of the sample mean.
D) Would it be unusual for the sample mean to be less than 38?
E) Do you think it would be unusual for an individual to have an income of less than 38? Explain.
Answer: 0.0040
Step-by-step explanation: First, I identified my operation which was multiplication. Next, I found where the decimals would go. After that, I solved the problem and got 0.0040.
Answer:
B
Step-by-step explanation:
4 is the elevation of Indio
0 is the sea leavel
Answer: 11
Step-by-step explanation: To determine which number is not a solution for the inequality, first begin by substituting in 3 for <em>x</em>.
So we have (3) + 6 < 14.
(3) + 6 is 9 and we can see that 9 < 14.
This means that this is a solution so we need to continue.
Now substitute a 5 in for <em>x</em>.
So we have (5) + 6 < 14.
(5) + 6 is 11 and we can see that 11 < 14.
This means that this is a solution so we need to continue.
Now substitute a 7 in for <em>x</em>.
So we have (7) + 6 < 14.
(7) + 6 is 13 and we can see that 13 < 14.
This means that this is a solution so we need to continue.
Now substitute an 11 in for <em>x</em>.
So we have (11) + 6 < 14.
(11) + 6 is 17 and we can see than 17 < 14.
Notice that the inequality 7 < 14 is not a true statement however because 17 is greater than 14, not smaller. This means that 11 is not a solution.
Bryant's score is 55 (given)
Jack's score is twice the score of Bryant, so it's
Brenda's score is 13 less than Jack, so it's