The value of a is 72.74.
<h3>What is Probability ?</h3>
Probability is the study of likeliness of an event to happen.
It is given that
The mean
of the distribution is 70
Standard deviation
is 2
p( x<a) = 0.9147
a = ?
From Z table
For p ( p < 0.9147) , z = 1.37


a = 70+ 2*1.37
a = 72.74
Therefore the value of a is 72.74.
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Answer:
Step-by-step explanation:
The graph is a straight line graph with a slope of -1/2
Equation of a line in point-slope form
The equation of a line in point slope form is expressed as:
y - y₁ = m(x - x₁)
Given the following parameters
Point = (-2, 3)
Slope = -1/2
Substitute the given parameters into the formula
y-3 = -1/2(x-(-2))
y-3 = -1/2(x+2)
Write in slope-intercept form
2(y-3) = -(x+2)
2y-2(3) = -x -2
2y - 6 = -x -2
2y = -x + 4
y = -1/2x + 2
The graph of the equation is as shown below
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Answer:
count: Sum up a pre-set interval of values in excel cells.
countif: sum up a pre-set interval of values according to certain rules determined by the user.
averageif: sum the values in cells and the divides the result by the total of cells considered in the function.
Step-by-step explanation:
count: Sum up a pre-set interval of values in excel cells.
countif: sum up a pre-set interval of values according to certain rules determined by the user.
averageif: sum the values in cells and the divides the result by the total of cells considered in the function.