Mathematics, 18.11.2019 21:31 vkrizh
The installation of a radon abatement device is recommended in any home where the mean radon concentration is 4.0 picocuries per liter (pci/l) or more, because it is thought that long-term exposure to sufficiently high doses of radon can increase the risk of cancer. seventy-five measurements are made in a particular home. the mean concentration was 3.73 pci/l and the standard deviation was 1.93 pci/l. a. the home inspector who performed the test says that since the mean measurement is less than 4.0, radon abatement is not necessary. explain why this reasoning is incorrect. b. because of health concerns, radon abatement is recommended whenever it is plausible that the mean radon concentration may be 4.0 pci/l or more. state the appropriate null and alternate hypotheses for determining whether radon abatement is appropriate. c. compute the p-value. would you recommend radon abatement? explain.
Answers: 2
Mathematics, 21.06.2019 20:30
Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.
Answers: 2
Mathematics, 21.06.2019 20:30
Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the plzzz write a proportion i will give you 100 points
Answers: 1
The installation of a radon abatement device is recommended in any home where the mean radon concent...
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