Find the Mean and mad for 8 points
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Answers: 3
Mathematics, 21.06.2019 17:50
On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.
Answers: 2
Mathematics, 22.06.2019 00:00
Mrs. blake's bill at a restaurant is $42.75. she wants to leave the waiter an 18% tip. how much will she pay in all, including the tip?
Answers: 2
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, 12.03.2020 22:53
Mathematics, 12.03.2020 22:53
Mathematics, 12.03.2020 22:53
Mathematics, 12.03.2020 22:53
Mathematics, 12.03.2020 22:53