Homework Answers
The correct answer is:-the spreading of treatment effects from the experimental to the control group
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Diffusion refers to... a. differences in one group of participants from another group. b. the demands...
Using the ________ design, a researcher measures a dependent variable for one group of participants following...
Using the ________ design, a researcher measures a dependent variable for one group of participants following a treatment. Select one: a. non-equivalent control group Incorrect b. control time series c. one-group pretest-posttest d. one-group posttest only
The study participants do not know if they are in the treatment or comparison group, but...
The study participants do not know if they are in the treatment or comparison group, but the investigators do know the group assignments. Which of the following terms associated with experimental studies is defined by this statement? a) Single-masked study b) Equipoise c) Reference population d) Placebo
A kinase is a protein that... a. adds a phosphate group to another molecule b. removes...
A kinase is a protein that... a. adds a phosphate group to another molecule b. removes a phosphate group from another protein c. activates expression of one or more genes d. represses expression of one or more genes e. allows facilitated diffusion of specific ions
2) In a different study, patients were divided randomly into two groups. One group received a...
2) In a different study, patients were divided randomly into two groups. One group received a well-known migraine headache medication called Maxalt, while another group received nothing. On average, there was a 40% decrease in pain levels after 2 hours for the group receiving Maxalt. The group who received nothing had a 15% decrease in pain. Part A: The patients were divided randomly, so the groups should be roughly similar. Unfortunately, there is still a confounding variable in this study....
A quasi-experimental or nonexperimental research design that compares different groups of participants is called a(n) one...
A quasi-experimental or nonexperimental research design that compares different groups of participants is called a(n) one that compares the same group of participants is called a(n) whereas a. pre-post design; nonequivalent groups design. b. nonequivalent groups design; pre-post design. c. within-subjects experimental design between-subjects experimental design. d. between-subjects experimental design, within-subjects experimental design
Which of the designs below would be best suited to ANCOVA? a. Participants were randomly allocated...
Which of the designs below would be best suited to ANCOVA? a. Participants were randomly allocated to one of two stress management therapy groups, or a waiting list control group. The researcher was interested in the relationship between the therapist’s ratings of improvement and stress levels over a 3-month treatment period. b. Participants were allocated to one of two stress management therapy groups, or a waiting list control group based on their baseline levels of stress. The researcher was interested...
0201 7) A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss She randomly assigns half of a group of overweight persons to a treatment group who...
0201 7) A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss She randomly assigns half of a group of overweight persons to a treatment group who are giver the herb with instructions as to use and a planned diet for six weeks. The other half of the group i given the same diet without the herb. Participants are aware as to which group they belong. A nurse at the...
In a study of the effects of cognitive training on memory, 60 participants are recruited, run...
In a study of the effects of cognitive training on memory, 60 participants are recruited, run in a session where they are given a 10-page Wedding story to remember, and then tested. The participants are randomly assigned to one of three conditions: a) 20 subjects participate in a Memory Improvement Training program during the session, b) 20 subjects are given exercises that do not improve memory (i.e., focusing on a white board), but are told that the exercises are meant...
Diffusion: Which following statement is incorrect? Select one: a. Facilitated diffusion requires a transport protein b....
Diffusion: Which following statement is incorrect? Select one: a. Facilitated diffusion requires a transport protein b. It is a form of passive transport c. Isotonic solutions have an equal amount of solute on both sides of the membrane - no change in shape d. Exocytosis involves the diffusion of molecules out of a cell e. Hypotonic solutions result in cell swelling
Question: 1 Part A: There are several assumptions that are made in the one-way ANOVA model....
Question: 1 Part A: There are several assumptions that are made in the one-way ANOVA model. Which one in the list is NOT one of the assumptions? a. The populations means are all equal if Ho is true. b. The variances within each treatment group are statistically equal. c. The mean of the observations, in at least one treatment group, is statistically significantly different from the mean of the observations in any one of the other treatment groups. d. All...
2) In a different study, patients were divided randomly into two groups. One group received a well-known migraine headache medication called Maxalt, while another group received nothing. On average, there was a 40% decrease in pain levels after 2 hours for the group receiving Maxalt. The group who received nothing had a 15% decrease in pain. Part A: The patients were divided randomly, so the groups should be roughly similar. Unfortunately, there is still a confounding variable in this study....
A quasi-experimental or nonexperimental research design that compares different groups of participants is called a(n) one that compares the same group of participants is called a(n) whereas a. pre-post design; nonequivalent groups design. b. nonequivalent groups design; pre-post design. c. within-subjects experimental design between-subjects experimental design. d. between-subjects experimental design, within-subjects experimental design
0201 7) A nutritionist wants to conduct a study to validate the efficacy of an herb as an aid in weight loss She randomly assigns half of a group of overweight persons to a treatment group who are giver the herb with instructions as to use and a planned diet for six weeks. The other half of the group i given the same diet without the herb. Participants are aware as to which group they belong. A nurse at the...
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