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A researcher investigates the relative risk of ovarian cancer between women who regularly use talcum powder and those who do not . She records the following data
Ovarian Cancer (columns); Talcum (Rows)
YES NO
Yes 40 460
NO 38 662
Based on this ample evidence, what is 95% confidence interval for the relative risk of developing ovarian cancer for women who use talcum powder vs. those who do not?
a) (0.07, 2.84)
b) (0.23, 1.23)
c) (-0.07, 0.84)
d) (0.96, 2.26)
The superintendent of a large office complex, upon evaluating 30 of the units recently purchased and finding their mean power consumption to be 805 watts, claims that her shipment does not meet company specifica- tions. At the 0.05 level of signif..
What is the minimum sample size?- If the actual percentage defective may be anywhere between 3% and 6%, tabulate the minimum sample size required for actual percentage defective from 3% to 6%.
Find the probability that the injured person is female. P( P( )=? E. Find the probability that the injured person is female and was hurt at work. P( P( )=? F.
Find the Difference Between Two Measures of Intelligence
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Of the households with NOW accounts 79.3% had savings accounts. The probability that a randomly selected household with a savings account has no checking account is?
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general population is skewed to the right the mean degree of affection is 60 standard deviation is 16. sample 100
This problem will give you practice in constructing confidence intervals and in discovering how to reduce their size (without sacrificing confidence).
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