Tony writes an equation to represent the distance he walks in meters, d, in relation to the number of minutes he walks, m.
2 answers:
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The confidence interval for the mean usage of water is (18.7,20.5).
Given population standard deviation of 2.4, mean of 19.5 gallons per day and confidence interval of 98%.
We have to find the confidence interval for the mean usage of water.
To find out the confidence interval we have to first find margin of error.
μ=19.5
σ=2.4
α=0.98
α/2=0.49
We have to find the z value for the p value 0.49 which is z=2.33
Margin of error=z*μ/
=2.33*19.5/
=0.82
lower level=mean -m
=19.5-0.82
=18.68
after rounding upto 1 decimal
=18.7
upper mean = mean+m
=19.5+0.82
=20.52
Hence the confidence interval for the usage of water is (18.7,20.52).
Learn more about margin of error at brainly.com/question/10218601
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Answer:
y = 4
Step-by-step explanation:
An exponential function in standard form is
y = a
Use ordered pairs from the table to find a and b
Using (0, 4), then
4 = a ( note that
= 1 ), so
a = 4, then
y = 4
Using (1, 8)
8 = 4 = 4b ( divide both sides by 4 )
b = 2
y = 4 ← represents the values in the table