A researcher uses a repeated-measures ANOVA to evaluate the results from a research study and reports an F-ratio with df = 4, 24. A) How many treatment conditions were compared in the study? B) How many individuals participated in the study?
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A researcher uses a repeated-measures ANOVA to evaluate the results from a research study and reports an F-ratio with df = 4, 24.
A)
How many treatment conditions were compared in the study?
B)
How many individuals participated in the study?
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- From a random sample of 1000 Americans, it was discovered that 920 of them lived in neighborhoods with acceptable levels of Carbon Monoxide. (Source: The Environmental Protection Agency) Obtain a point estimate for the proportion of Americas who live in neighborhoods with acceptable levels of carbon monoxide.A researcher conducts an experiment comparing four treatment conditions with n = 12 each scores in each conditions a. If the researcher uses an independent-measures design, how many individuals are needed for the study and what are the df values for the F-ratio b. If the researcher uses a repeated-measures design, how many individuals are needed for the study and what are the df values for the F-ratio?As part of a study designed to test the safety of automobiles, the National Transportation Safety Board collectedand reviewed data about the effects of an automobile crash on test dummies. Cars with dummies inthe front seats were crashed into a wall at a speed of 35 miles per hour. We want to know the proportion ofdummies in the driver’s seat that would have had head injuries if they had been actual drivers. Head injurydata for the dummies in the driver’s seat are listed on the spreadsheet. Use a 0.05 significance level.Find the P-value to test the null hypothesis that the different weight categories have the same mean. Do thesample data suggest that larger cars are safer? Subcompact Compact Midsize Fullsize 681 643 469 384 428 655 727 656 917 442 525 602 898 514 454 687 420 525 259 360
- A researcher conducts an experiment comparing four treatment conditions with n = 12 scores in each condition. If the researcher uses an independent-measures design, how many individuals are needed for the study and what are the df values for the F-ratio? If the researcher uses a repeated-measures design, how many individuals are needed for the study and what are the df values for the F-ratioFor an indenpendent- measures ANOVA comparing three treatments with a sample of n=5 in each treatment, what is the critical value for the F-ratio using a=.05?How many females and males of the sample have satisfying non- academic performance inspite of having bad eye vision?
- In a study to estimate the proportion of smokers among the residents in a certain city and its suburbs, it is found that 24 of 104 urban residents aresmokers, while 34 of 108 suburban residents are smokers. Is there a significant difference between the proportions of smokers among urban and suburban residents? Make use of a P-value.A researcher conducts a repeated-measures experiment using a sample of n = 15 subjects to evaluate the differences among three treatment conditions. If the results are examined with an ANOVA, what are the df values for the F-ratio?A researcher conducts an experiment comparing four treatment conditions with n=12 scores in each condition. If an independent-measures design was used, how many individuals would be needed for the study, and what would the degrees of freedom values for the F-ratio be?