Mathematics, 12.03.2020 18:52 swelch2010

-
17. Use the given degree of confidence and sample data to find a confidence interval for the
population standard deviation o. Assume that the population has a normal distribution.
Round the confidence interval limits to the same number of decimal places as the sample
standard deviation.
ibing
A sociologist develops a test to measure attitudes about public transportation, and 27 randomly
selected subjects are given the test. Their mean score is 76.2 and their standard deviation is 21.4.
Construct the 95% confidence interval for the standard deviation, o, of the scores of all subjects.
17.5 <0 < 27.8
17.2

16.6
16.9

Answers: 1

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 16:40

One of the inventors of integrated circuits observed that the number of transistors that fit on an integrated circuit will double every 24 months. what type of relationship most appropriately models this situation?

Answers: 3

Answer

Mathematics, 21.06.2019 19:00

The width of a rectangle is 20 units. can the perimeter p of the rectangle be 64 units when its length x is 11 units? no, because p = 2x + 2(20) no, because p ≠ 2x + 2(20) yes, because p ≠ 2x + 2(20) yes, because p = 2x + 2(20)

Answers: 1

Answer

Mathematics, 21.06.2019 20:00

What is the x-intercept and y-intercept of the equation 2x+1. 2o

Answers: 2

Answer

Mathematics, 21.06.2019 21:30

Data from 2005 for various age groups show that for each $100 increase in the median weekly income for whites, the median weekly income of blacks increases by $105. also, for workers of ages 25 to 54 the median weekly income for whites was $676 and for blacks was $527. (a) let w represent the median weekly income for whites and b the median weekly income for blacks, and write the equation of the line that gives b as a linear function of w. b = (b) when the median weekly income for whites is $760, what does the equation in (a) predict for the median weekly income for blacks?

Answers: 2

Answer

You know the right answer?

-
17. Use the given degree of confidence and sample data to find a confidence interval for the...

Questions