Homework Answers
This is known as carry over effects. These are effects of participation in a treatment condition that may influence performance or results on subsequent conditions.
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When participation in one treatment condition causes prolonged effects that influence scores in future treatments, the...
When the effects of two variables cannot be separated in an experiment and we cannot determine...
When the effects of two variables cannot be separated in an experiment and we cannot determine which variable is responsible for the observed predicted response; the variables are considered to be Select one: a. highly correlated b. stratified c. one of them is placebo d. Blocked e. confounded Randomization is used in a randomized block design to: Select one: a. Select which treatments will be compared o b. Assign the treatments to the individuals within blocks c. Select the individuals...
QUESTION 3 In an analysis of variance, differences caused by treatment effects contribute to which of...
QUESTION 3 In an analysis of variance, differences caused by treatment effects contribute to which of the following variances? a. Between-treatments variance but not within-treatments variance o b. Both between-treatments variance and within-treatments variance e c Within-treatments variance but not between treatments variance o d. Neither between-treatments variance nor within treatments variance QUESTION 4 In analysis of variance, what is measured by the MS values? o a. The total variability for the set of N scores e b Population variance...
2.) The data below are from an independent-measures experiment comparing the effects of insomnia treatments. Treatment...
2.) The data below are from an independent-measures experiment comparing the effects of insomnia treatments. Treatment 1 is a control group, Treatment 2 meditated before sleeping, and Treatment 3 received a sleeping pill. Note Pay close attention to what information you are given! Treatment1 Treatment 2 Treatment 3 6 G-36 T2 = 8 SS2 -6 T's = 24 SS-6 SS: = 6 a.Complete the ANOVA summary table below to help determine whether these data indicate any significant mean differences among...
When we are conducting a study that manipulates an independent variable, controls the influence of other variables, and...
When we are conducting a study that manipulates an independent variable, controls the influence of other variables, and examines the effects of a treatment on some outcome, we are conducting Qualitative research O Quantitative research Suppose that we plan to study the effect of an educational program on student achievement. If we say that we think that the program will increase achievement scores we are making a(n): O relationship deductive conclusion O research problem hypothesis A researcher gave a series...
1) Which of the following must be found in order to observe an effect of the...
1) Which of the following must be found in order to observe an effect of the independent variable in an experiment ? A. high between group variance B. High error variance C. high standards deviations D. high group means 2) what kind of validity is threatened when we cannot generalized the results of the study? A. construct validity B. External validity C. Internal validity D. Statistical validity 3) which cofounding variable is most likely to occur when participants are selected...
3. When conducting a one-way ANOVA, the the between-treatment variability is when compared to the within-treatment...
3. When conducting a one-way ANOVA, the the between-treatment variability is when compared to the within-treatment variability, the the value of FDATA will be tend to be. a. smaller, larger b. smaller, smaller c. larger, larger d. smaller, more random e. larger, more random 4. Which of the following is an assumption of one-way ANOVA comparing samples from three or more experimental treatments? a. All the response variables within the k populations follow a normal distributions. b. The samples associated...
An interaction effect means that the combination of factors creates a different result. True False "A...
An interaction effect means that the combination of factors creates a different result. True False "A researcher conducts an experiment comparing four treatment conditions with n=12 scores in each condition. If the researcher uses a repeated-measures design, how many individuals are needed for the study?" a 12 b 24 c 36 d 48 "You have to find the F-critical for each effect when running a two-factor, independent measures, ANOVA. " True False "After you remove the individual differences in a...
Question 4 (2 points) Saved The study "Transcatheter or Surgical Aortic-Valve Replacement in Intermediate-Risk Patients" was...
Question 4 (2 points) Saved The study "Transcatheter or Surgical Aortic-Valve Replacement in Intermediate-Risk Patients" was published in the New England Journal of Medicine in 2016. This study compared the efficacy of two treatments for cardiovascular malfunction. Over 1,000 low-risk patients were randomly assigned to a standard treatment: a type of invasive heart surgery. Another 1,000 low-risk patients were randomly assigned to a nonstandard treatment: the use of a less invasive non-surgical catheter. Researchers compared the two treatment groups, and...
At what point are cholinesterase inhibitors no longer effective in the treatment of Alzheimer disease? When...
At what point are cholinesterase inhibitors no longer effective in the treatment of Alzheimer disease? When the brain size shrinks and can no longer produce acetylcholinesterase b. When the number of neural transmitters sufficiently decreases c. When the patient's ability to swallow is impaired d. When there are fewer intact neurons available to make acetylcholine 10. What is one of the side effects that is common to many of the antiepileptic drugs? a. Rash b. Increased sodium levels c. Folic...
Ultrasound is one of many experimental treatments used for soft tissue injuries. In an experiment to...
Ultrasound is one of many experimental treatments used for soft tissue injuries. In an experiment to gauge the efficacy of this treatment for knee injuries, seven subjects with recent knee injuries were enrolled in a trial. The range of motion (in degrees) of the joint was measured first. After a prescribed ultrasound treatment, the range of motion was measured again. Table 1 below contains the pre and post treatment responses from each of these subjects. Table 1: Knee extensions (degrees)...
When the effects of two variables cannot be separated in an experiment and we cannot determine which variable is responsible for the observed predicted response; the variables are considered to be Select one: a. highly correlated b. stratified c. one of them is placebo d. Blocked e. confounded Randomization is used in a randomized block design to: Select one: a. Select which treatments will be compared o b. Assign the treatments to the individuals within blocks c. Select the individuals...
QUESTION 3 In an analysis of variance, differences caused by treatment effects contribute to which of the following variances? a. Between-treatments variance but not within-treatments variance o b. Both between-treatments variance and within-treatments variance e c Within-treatments variance but not between treatments variance o d. Neither between-treatments variance nor within treatments variance QUESTION 4 In analysis of variance, what is measured by the MS values? o a. The total variability for the set of N scores e b Population variance...
2.) The data below are from an independent-measures experiment comparing the effects of insomnia treatments. Treatment 1 is a control group, Treatment 2 meditated before sleeping, and Treatment 3 received a sleeping pill. Note Pay close attention to what information you are given! Treatment1 Treatment 2 Treatment 3 6 G-36 T2 = 8 SS2 -6 T's = 24 SS-6 SS: = 6 a.Complete the ANOVA summary table below to help determine whether these data indicate any significant mean differences among...
When we are conducting a study that manipulates an independent variable, controls the influence of other variables, and examines the effects of a treatment on some outcome, we are conducting Qualitative research O Quantitative research Suppose that we plan to study the effect of an educational program on student achievement. If we say that we think that the program will increase achievement scores we are making a(n): O relationship deductive conclusion O research problem hypothesis A researcher gave a series...
3. When conducting a one-way ANOVA, the the between-treatment variability is when compared to the within-treatment variability, the the value of FDATA will be tend to be. a. smaller, larger b. smaller, smaller c. larger, larger d. smaller, more random e. larger, more random 4. Which of the following is an assumption of one-way ANOVA comparing samples from three or more experimental treatments? a. All the response variables within the k populations follow a normal distributions. b. The samples associated...
Question 4 (2 points) Saved The study "Transcatheter or Surgical Aortic-Valve Replacement in Intermediate-Risk Patients" was published in the New England Journal of Medicine in 2016. This study compared the efficacy of two treatments for cardiovascular malfunction. Over 1,000 low-risk patients were randomly assigned to a standard treatment: a type of invasive heart surgery. Another 1,000 low-risk patients were randomly assigned to a nonstandard treatment: the use of a less invasive non-surgical catheter. Researchers compared the two treatment groups, and...
At what point are cholinesterase inhibitors no longer effective in the treatment of Alzheimer disease? When the brain size shrinks and can no longer produce acetylcholinesterase b. When the number of neural transmitters sufficiently decreases c. When the patient's ability to swallow is impaired d. When there are fewer intact neurons available to make acetylcholine 10. What is one of the side effects that is common to many of the antiepileptic drugs? a. Rash b. Increased sodium levels c. Folic...
Ultrasound is one of many experimental treatments used for soft tissue injuries. In an experiment to gauge the efficacy of this treatment for knee injuries, seven subjects with recent knee injuries were enrolled in a trial. The range of motion (in degrees) of the joint was measured first. After a prescribed ultrasound treatment, the range of motion was measured again. Table 1 below contains the pre and post treatment responses from each of these subjects. Table 1: Knee extensions (degrees)...
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