Grade 11 and 12 Mathematics (Moderator: geoffrey)

Which of the following is true about confounding variables in observational studies? a. If a ...

Started by cagreen833

A medical doctor is comparing two treatments for high cholesterol. She puts the names of 40 patients ...

Started by jCorn1234

Research is done to see whether taking oral contraceptives increases women's blood pressures. The ...

Started by karen

An observational study is done to see if eating at least two apples a week helps prevent tooth decay ...

Started by danielfitts88

For each relationship (conclusions from one or more studies), define what the response and ...

Started by a0266361136

The purpose of having a control group in a study is a. to estimate the response when the treatment ...

Started by RYAN BANYAN

Sickle-cell disease is a painful disorder of the red blood cells that in the United States affects ...

Started by leo leo

A researcher is studying the relationship between sugar consumption and weight gain. Twelve ...

Started by michelleunicorn

Fifty university students are randomly chosen from the college campus. Their physical fitness ...

Started by mcmcdaniel

Having a coffee fix just before a workout may not be the best idea, a study suggests. Researchers in ...

Started by dakota nelson

A researcher designed a study to assess whether grades in a statistics course could be improved by ...

Started by bb

A sample of 16,000 women was randomly assigned to take HRT (Hormone Replacement Therapy) or a ...

Started by stock

A tea manufacturer is trying to decide whether to add peach flavoring or mango flavoring to green ...

Started by xroflmao

In a study of acupuncture for treating pain 100 patients were recruited. Half were randomly assigned ...

Started by lb_gilbert

A group of 709 patients with lung cancer was compared to a group of 709 controls. For each patient ...

Started by ETearle

In a Gallup telephone survey of 1001 adults done before the Thanksgiving holiday, 58 said they would ...

Started by deesands

A difficult birth or a history of mental illness in a parent may put a baby at greater risk for ...

Started by savannahhooper

Very young children who live in homes where the television is on most of the time may have more ...

Started by jessicacav

You wish to study the effect of a tutoring program to help improve student grades in an introductory ...

Started by azncindy619

When the results of a study on adults is applied to children, the effect is called a. extending ...

Started by evelyn o bentley

A survey of 1,204 black respondents found that 31 agreed with the statement American society is fair ...

Started by Cooldude101

For each relationship, decide whether the variable is an interacting variable or a confounding ...

Started by jake

Researchers would like to compare meditation and exercise to see which is more effective for ...

Started by melly21297

An observational study has found that drivers who report that they routinely wear a seatbelt were ...

Started by LaDunn

A study of changing speed limits in the United States finds no evidence that higher limits fuel more ...

Started by panfilo