Mathematics, 14.04.2020 22:45 kaylynnbryner04
The National Health Interview Survey conducted of 33,326 adults by the U. S. National Center for Health Statistics in 2003 indicated that 21.4% of adults were current smokers. A similar study conducted in 1991 of 42,000 adults indicated that 25.6% were current smokers. We will use the subscript "1" for the year 1991 and the subscript "2" for the year 2003.
a. Find and interpret a point estimate of the differencebetween the proportion of current smokers in 1991 and theproportion of current smokers in 2003.
b. A 99% confidence interval for the true difference is(0.032, 0.050). Interpret.
c. What assumptions must you make for the interval in (b) tobe valid?
Answers: 1
Mathematics, 21.06.2019 21:00
Aquadrilateral has exactly one pair of parallel sides. which name best describes the figure?
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Mathematics, 22.06.2019 00:30
Kevin has a spinner that has 10 equal sections and 2 sections of each colorβred, blue, green, yellow, and purple. kevin spins the spinner 180 times. kevin determines about how many times the spinner will land on red or green, and his work is shown below. -kevin has the formula reversed; it should be the total number of sections over the number of red or green sections. -kevin should have used a 4 in the numerator because there are 2 red sections and 2 green sections. -kevin should multiply by the number of sections in the spinner rather than the total number of spins. -kevin calculated the prediction correctly and did not make any mistakes.
Answers: 1
Mathematics, 22.06.2019 03:00
There are a total sales of 2,000 dollars on monday on tuesday sales dropped 10% on wednesday sales dropped another 20% compared with tuesday from wednesday to thursday sales increases by an equal amount to 25% of monday total sales what is the net change in dollars on total sales from monday to tuesday
Answers: 1
Mathematics, 22.06.2019 03:00
What is the slope-intercept form for each equation in this system? compare the slopes and y-intercepts to describe the graph of the system. 3x - 4y = 28 4x + 10y = 20
Answers: 1
The National Health Interview Survey conducted of 33,326 adults by the U. S. National Center for Hea...
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