Mathematics, 06.12.2021 22:50 dorianhenderson987
The Nielsen Company conducts survey each year about the use of various media, such as television. A representative sample of adult Americans was surveyed in 2010, and the mean number of minutes per week spent watching television was 576 minutes and sample standard deviation was 60 minutes. An independently selected representative sample of adults was surveyed in 2011, the mean was 646 minutes and sample standard deviation was 80 minutes. Suppose that sample size in each year was 1000. Estimate the difference in the mean spent watching television in 2010 and the mean time spent in 2011 using a 99% confidence interval. Interpret the interval in context.
Answers: 1
Mathematics, 21.06.2019 18:00, cexe2630
The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old
Answers: 1
Mathematics, 21.06.2019 18:30, KTgodlencorgi
David is spreading mulch on a triangular area of his flower bed. the coordinates of the vertices of the area are (1, 3), (9, 3), and (4, 6). what is the area of the triangle if each square has an area of 3 square feet?
Answers: 1
Mathematics, 21.06.2019 19:00, mbalderp5bxjo
Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 is he correct? explain why or why not?
Answers: 3
The Nielsen Company conducts survey each year about the use of various media, such as television. A...
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