after 5 points are subtracted from every score, the sample mean is found to be m = 24. what was the mean for the original sampl
2 answers:
Answer:
The mean of original sample is 29.
Step-by-step explanation:
After 5 points are subtracted from every score, the sample mean is found to be m = 24
So, the mean for the original sample was =
Here we are talking about mean so 5 points are subtracted from every score. when we are talking in terms of mean, 5 will be added to the mean, that will give 5 added to every score.
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Answer:
The area of the floor of the shed is <u>1500 square feet.</u>
Step-by-step explanation:
Given:
The vertices of the floor of a shed are: (20,80), (50,60), (50,20) and (20,20)
Let us plot the given vertices on a graph.
From the graph, it is clear that the given figure is a trapezium with opposite parallel sides being parallel to the y axis. The height of the trapezium is the side that is parallel to x axis.
The area of the trapezium ABCD is given as:
From the graph, AB = 60 ft, CD = 40 ft, AD = 30 ft
Therefore, the area is given as:
Therefore, the area of the floor of the shed is 1500 square feet.
