Mathematics, 03.05.2021 21:10 quece233
The circumference of an ellipse is approximated by C = 220 V
a? +62
where 2a and 2b are the lengths of
2
the axes of the ellipse. Which equation is the result of solving the formula of the circumference for b?
Answers: 3
Mathematics, 21.06.2019 18:00
Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.
Answers: 1
Mathematics, 22.06.2019 02:30
Researchers are conducting experiments to determine the role of alcohol in the development of depression. after the study is complete, they determine that the relative risk of developing depression is 1.55 with a 95 % ci of 1.2 -1.9. each group is then divided into nonsmokers and smokers. the relative risk for the nonsmokers is 1.12 with a 95% ci of 0.87-1.37. the relative risk for the smokers is 1.7 with a 95 % cl of 1.5-1.9. what type of bias may affect this study? a. procedure bias b. recall bias c. selection bias d. confounding e. lead-time bias
Answers: 2
Mathematics, 22.06.2019 03:10
(co 3) the times that customers spend in a book store are normally distributed with a mean of 39.5 minutes and a standard deviation of 9.4 minutes. a random sample of 25 customers has a mean of 36.1 minutes or less. would this outcome be considered unusual, so that the store should reconsider its displays? no, the probability of this outcome at 0.035, would be considered usual, so there is no problem yes, the probability of this outcome at 0.035, would be considered unusual, so the display should be redone no the probability of this outcome at 0.359 would be considered usual, so there is no problem yes, the probability of this outcome at 0.965 would be considered unusual, so the display should be redone
Answers: 1
Mathematics, 22.06.2019 04:00
Summary statistics given for independent simple random samples from two populations. use the pooled t-interval procedure to obtain specified confidence interval. x1=71.6, s1=3.9, n1=11, x2=67.9, s2=3.4, n2=9 determine a 99% confidence level.
Answers: 2
The circumference of an ellipse is approximated by C = 220 V
a? +62
where 2a and 2b are the...
where 2a and 2b are the...
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