Answer:
Your answer would be D. I know this is kind of late, but maybe other people that come up here could get some help
Step-by-step explanation:
Whats the x value of the solution to this system of equations x=2y-4 7x+5y=-66
2 answers:
You might be interested in
Answer:
E. -1.48
Step-by-step explanation:
The test statistic is:
In which X is the sample mean, is the expected value,
is the standard deviation and n is the size of the sample.
A market research analyst claims that 32% of the people who visit the mall actually make a purchase.
This means that:
You stand by the exit door of the mall starting at noon and ask 82 people as they are leaving whether they bought anything. You find that only 20 people made a purchase.
This means that
The value of the test statistic is about:
So the correct answer is given by option E.
Answer:
2, 4.5 and 8
Step-by-step explanation:
(1)
The mode is the number which occurs most often , then
mode = 2
(2)
The median is the middle value of the numbers arranged in ascending order. If there is no exact middle value then it is the average of the numbers either side of the middle.
1, 2, 2, 3, 4, 5, 6, 7, 8, 9
↑ middle
median = =
= 4.5
(3)
The range is the difference between the largest and smallest values
range = 9 - 1 = 8