A programmeéř planš develop a new software system. planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surve to be 90% confident that his estimate is in error by no more than four percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n=0 (Round up to the nearest integer.) b) Assume that a recent survey suggests that about 87% of computers use a new operating system. (Round up to the nearest integer.) c) Does the additional survey information from part (b) have much of an effect on the sample size that is required? O A. Yes, using the additional survey information from part (b) dramatically increases the sample size. O B. No, using the additional survey information from part (b) only slightly increases the sample size. OC. Yes, using the additional survey information from part (b) dramatically reduces the sample size. O D. No, using the additional survey information from part (b) does not change the sample size.
Angles in Circles
Angles within a circle are feasible to create with the help of different properties of the circle such as radii, tangents, and chords. The radius is the distance from the center of the circle to the circumference of the circle. A tangent is a line made perpendicular to the radius through its endpoint placed on the circle as well as the line drawn at right angles to a tangent across the point of contact when the circle passes through the center of the circle. The chord is a line segment with its endpoints on the circle. A secant line or secant is the infinite extension of the chord.
Arcs in Circles
A circular arc is the arc of a circle formed by two distinct points. It is a section or segment of the circumference of a circle. A straight line passing through the center connecting the two distinct ends of the arc is termed a semi-circular arc.
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