Participants were not told which type of tea they had and

Reference no: EM13607701

To test an herbal treatment for depression, 100 volunteers who suffered from mild depression were randomly divided into two groups. Each person was given a month's supply of tea bags. For one group, the tea contained the herb mixed with spice tea, whereas for the other group, the bags contained only the spice tea. Participants were not told which type of tea they had, and were asked to drink one cup of tea per day for a month. At the end of the month, a psychologist evaluated them to determine if their mood had improved. The psychologist did not know which of the subjects had the tea with the herbal ingredient added.

Which is true regarding this study?

This study is an observational study.
This study is double-blind.
The "only spice tea" group serves as the control group.
All of the above are true.
Both (B) and (C) are true.

Reference no: EM13607701

Questions Cloud

Determine 1 the pressure at the initial state 2 temperature : five kilograms of water at saturated liquid phase fills in a piston-cylinder device at 150oc. the device is now heated

The distribution of the sat scores in math for an incoming : the distribution of the sat scores in math for an incoming class of business students has mean of 580 and standard

Camey corporation purchased delivery equipment on january 1 : camey corporation purchased delivery equipment on january 1 at a cost of 300000. the equipment is expected to have a

You are on the staff of camden inc the cfo believes project : you are on the staff of camden inc. the cfo believes project acceptance should be based on the npv but steve camden the

Participants were not told which type of tea they had and : to test an herbal treatment for depression 100 volunteers who suffered from mild depression were randomly divided into

Abc manufacturing company produces and sells 40000 units : abc manufacturing company produces and sells 40000 units of a single product. variable costs total 80000 and fixed

The lighted disk illuminates the screen but theres a shadow : a 8.0--diameter disk emits light uniformly from its surface. 20 from this disk along its axis is an 9.0--diameter

Kinetic and potential energy effects can be neglected : one-half kg of refrigerant-22 is contained in a piston-cylinder assembly initially saturated vapor at 5bar. the

The main advantage of experiments over observational : the main advantage of experiments over observational studies is thata well-designed experiment can give good evidence

User Account

All Pages