|a − b + c| , if a=−8; b=−5; c=1 please help thx brosuf
2 answers:
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Answer:
(a) The sample size required is 2401.
(b) The sample size required is 2377.
(c) Yes, on increasing the proportion value the sample size decreased.
Step-by-step explanation:
The confidence interval for population proportion <em>p</em> is:
The margin of error in this interval is:
The information provided is:
MOE = 0.02
(a)
Assume that the proportion value is 0.50.
Compute the value of <em>n</em> as follows:
Thus, the sample size required is 2401.
(b)
Given that the proportion value is 0.55.
Compute the value of <em>n</em> as follows:
Thus, the sample size required is 2377.
(c)
On increasing the proportion value the sample size decreased.
Answer:
B
Step-by-step explanation:
Look at the figures below.
Figure A.
The median of a quadrilateral was drawn as the red segment. It split the interior angle of the quadrilateral into angles 1 and 2. Angles 1 and 2 are clearly not congruent. Statement A is false.
Figure B.
The red segment connecting the midpoints of two sides of a triangle is parallel to the third side and half its length. Statement B is true.
Figure C.
The red midsegment cuts the triangle into two areas, crosshatched in blue and green. The areas are clearly not equal, so statement C is false.
