The National Cancer Institute conducted a 2-year study to determine whether cancer death rates for areas nearnuclear power plants are higher than for areas without nuclear facilities. A spokesperson for the CancerInstitute said, "From the data at hand, there was no convincing evidence of any increased risk of death from anyof the cancers surveyed due to living near nuclear facilities."לי B. If the National Cancer Institute researchers were incorrect in their conclusion that there is no increased cancerrisk associated with living near a nuclear power plant, are they making a Type I or a Type II error? Readcarefully and select one of the following:a) A Type II error, if the researchers were incorrect in their conclusion this would be rejecting the null hypothesiswhen the null hypothesis is true.b) A Type I error, if the researchers were incorrect in their conclusion this would be failing to reject the nullhypothesis when the null hypothesis is true.c) A Type II error, if the researchers were incorrect in their conclusion this would be failing to reject the nullhypothesis when the null hypothesis is false.d) A Type I error, if the researchers were incorrect in their conclusion this would be rejecting the null hypothesiswhen the null hypothesis is false.

Type I error: The type I error if the null hypothesis is rejected when it is actually true. Type II…

Answered: B. If the National Cancer Institute…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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A nutritionist believes that obesity is more prevalent among American adults than it was in the past. He discovers that in a study conducted in the year 1994, 380 of the 1630 randomly chosen adults were classified as obese. However, in a more recent study, he finds 726 out of 2350 randomly chosen adults were classified as obese. At α = 0.05, do these studies provide evidence to support the nutritionist's claim that the proportion of obese adults has significantly increased since 1994?
A well-known study of 22,000 male physicians was conducted to determine if taking aspirin daily reduces the chances of a heart attack. Half of the physicians were given a regular dose of aspirin while the other half was given placebos. Six years later, among those who took aspirin, 104 suffered heart attacks while among those who took placebos, 189 suffered heart attacks. Does it appear that the aspirin can reduce the number of heart attacks among the sample group that took aspirin? Use α = 0.05.
A Harris Interactive poll reported that 32.4% of 275 randomly selected Americans living in the west stated that they attend church regularly. Whereas, 57.6% of 264 randomly selected Americans living in the south stated that they attend church regularly. Based on the results of this poll, can one reach the conclusion that the proportion of Americans who attend church regularly is lower in the west than in the south? Use ! = 5%.
A researcher hypothesizes that the lowering in cholesterol associated with weight loss is really due to exercise. To test this, the researcher carefully controls for exercise while comparing the cholesterol levels of a group of subjects who lose weight by dieting with a control group that does not diet. The difference between groups in cholesterol is not significant. Can the researcher claim that weight loss has no effect?
in a mid-2017 poll, 65% of u.s. adults believed that the russians meddled in the 2016 us elections. in a more recent poll, 675 out of 1,000 u.s. adults chosen at random reported to that they think the russians meddled in the 2016 elections. do the results of this poll provide evidence that the proportion of u.s. adults who believed that the russians meddled in the us elections has increased from 2017 to the later poll

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