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professor190 [17]
4 years ago
6

A 90% confidence interval for a proportion is found to be (0.62, 0.68). What is the sample proportion?

Mathematics
2 answers:
baherus [9]4 years ago
4 0

Answer:B. 0.65

Step-by-step explanation:

Ludmilka [50]4 years ago
3 0

Answer:

B. 0.65

Step-by-step explanation:

Sample proportion is the point estimate of the population proportion which is at the centre of the interval

(0.62+0.68)/2

1.30/2

0.65

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A circle's circumference is approximately 44 cm.
Sav [38]
<h3>Answers</h3><h3>diameter = 14</h3><h3>radius = 7</h3><h3>area = 154</h3>

these are all approximate

======================================

Explanation:

C = pi*d is the formula for the circumference. We know that C = 44 approximately, so,

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Then use this radius to find the circle's area

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A = 154  rounding to the nearest whole number

7 0
3 years ago
A and B are complementary angles. If A = (x + 9) and m B = (7x – 15)° then find the measure of B.​
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3 years ago
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