Answer:
d) 65.9 in < μ < 67.1 in.
Step-by-step explanation:
Given that a 99% confidence interval (in inches) for the mean height of a population is 65.7 < μ < 67.3
Mean = average of 65.7 and 67.3 =
i.e. here margin of error =
For 99% confidence interval critical value is 2.58
Hence std deviation =
For 95% confidence interval critical value is 1.96
Margin of error =
Hence confidence interval =
d) 65.9 in < μ < 67.1 in. is right
Answer:
hi42ht9hyiql423tuhu9yhtyuv6801uvp
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Step-by-step explanation:
Answer:
-2
Step-by-step explanation:
We want to evaluate;
We use the reciprocals of trigonometric ratios to obtain;
The 960 degree angle makes an angle of 60 degree with the positive direction of the x-axis and it is in the 3rd quadrant.
This implies that;
We use special trigonometric ratios to obtain;
Answer:
= 40%
Step-by-step explanation:
29+27+24=80
total = 80
32/80=0.4=40%
=40%
Step-by-step explanation:
the standard form of a circle equation is
(x - h)² + (y - k)² = r²
where (h, k) is the center of the circle, and r is the radius.
since the center of this circle is the origin (0, 0), we have the simplified version
x² + y² = r²
to get r² we simply use the given point
7² + 1² = r²
49 + 1 = r²
r² = 50
our equation in standard form is therefore
x² + y² = 50