Which sample size out of a population of 1,000 is most likely to lead to a valid conclusion?

50
100
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200

The diameter of a circular chip is doubled to use in a new board game. the area of the new chip will be

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.