Answer:
the correct answer is shown below
Step-by-step explanation:
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2 answers:
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Answer:
Pat a) The graph in the attached figure
Part b)
The slope is
The y-coordinate of the y-intercept is
Step-by-step explanation:
Part a) Which line represents the linear equation ?
To graph the linear equation find the intercepts
we know that
The y-intercept is the value of y when the value of x is equal to zero
so
For x=0
The y-intercept is the point
The x-intercept is the value of x when the value of y is equal to zero
so
For y=0
The x-intercept is the point
Plot the intercepts to graph the linear equation
see the attached figure
Part b) Rewritten in slope-intercept form
we know that
The equation of the line into slope intercept form is equal to
where
m is the slope
b is the y-coordinate of the y-intercept
we have
convert to slope intercept form
isolate the variable y
The slope is
The y-coordinate of the y-intercept is
Answer:
A. Increase sample size
Step-by-step explanation:
From the formula for estimating the confidence level interval for the mean:
X - Z × s/sqrt n where; X = sample mean; Z = z value corresponding to 95%;
s = standard deviation and n = sample size
It is evident from the equation that the confidence interval for the mean is inversely proportional to the sample size (n), hence increasing the sample size will result in a reduced interval width.
