IPad TF1:33
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The endpoints of a line segment can be represented on a coordinate grid by the points
A(-4, 1) and C(-4, -3). Graph and label each of the endpoints of the line segment on
the coordinate grid below.
10
8
6
4
2
2
-10 -8 -6 -4
-2
2
4
6
8
10
-2.
-4
-6
-8
-10
What is the distance, in units, between point A and point C?
Answer
units

Abottled water distributor wants to estimate the amount of water contained in 1-gallon bottles purchased from a nationally known water bottling company. the water bottling company’s specifications state that the standard deviation of the amount of water is equal to 0.02 gallon. a random sample of 50 bottles is selected, and the sample mean amount of water per 1-gallon bottle is 0.995 gallon a. construct a 99% confidence interval estimate for the popula-tion mean amount of water included in a 1-gallon bottle. b. on the basis of these results, do you think that the distributor has a right to complain to the water bottling company? why? c. must you assume that the population amount of water per bottle is normally distributed here? explain. d. construct a 95% confidence interval estimate. how does this change your answer to (b)?