Question

In 2011, the Institute of Medicine (IOM), a non- Sléet onc profit group affiliated with the US National Academy of Sciences, reviewed a study measuring bone quality and levels of vitamin-D in a random sample from bodies of 675 people who died in good health. 8.5% of the 82 bodies with low vitamin-D levels (below 50 nmol/L) had weak bones. Comparatively, 1% of the 593 bodies with regular vitamin-D levels had weak bones Medical researchers are conducting a double-blind experiment treating high blood pressure patients with a new vitamin supplement. The researchers are conducting a hypothesis test in which a Type I error is very serious, and the Type II error is not very serious. Which level of significance is the best choice? one answer. o points B. O -0.05

Answer 1

`\alpha=0.01`

Explanation:

"The researchers are conducting a hypothesis test in which a Type I error is very serious, and the Type II error is not very serious."

The Type I error (false positive) is equal to the level of significance. We then have to minimize it to minimize the Type I error.

A suitable level of significance could be
`\alpha=0.01`.

When the level of significance and the type I error is reduced, the probability of a Type II error increases (but is not very serious in this case).