Homework Answers
Option B
Explanation :
If p value is less than the level of significance then we reject H0 which implies that there is difference made by the control group
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A group of researchers, in a study of problem solving, described one of their results comparing...
In a study, researchers randomly assigned 500 people to the “treatment group” and the other 500 to the “control (or placebo) group”. A statistically significant difference was reported between the res...
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The highway department is testing two types of reflecting paint for concrete bridge end pillars. The...
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A social psychologist studying mass communication randomly assigned 87 volunteers to one of two experimental groups....
A social psychologist studying mass communication randomly assigned 87 volunteers to one of two experimental groups. Fifty-seven were instructed to get their news for a month only from television, and 30 were instructed to get their news for a month only from the Internet. After the month was up, all participants were tested on their knowledge of several political issues. The researcher simply predicted that there is some kind of difference. These were the results of the study. TV group:...
The highway department is testing two types of reflecting paint for concrete bridge end pillars. The...
The highway department is testing two types of reflecting paint for concrete bridge end pillars. The two kinds of paint are alike in every respect except that one is orange and the other is yellow. The orange paint is applied to 12 bridges, and the yellow paint is applied to 12 bridges. After a period of 1 year, reflectometer readings were made on all these bridge end pillars. (A higher reading means better visibility.) For the orange paint, the mean...
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Assume that the assumptions and conditions for inference with a two-sample t-test are met. Test the...
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Wind Mountain is an archaeological study area located in southwestern New Mexico. Potsherds are broken pieces of prehistoric Native American clay vessels. One type of painted ceramic vessel is called...
Wind Mountain is an archaeological study area located in
southwestern New Mexico. Potsherds are broken pieces of prehistoric
Native American clay vessels. One type of painted ceramic vessel is
called Mimbres classic black-on-white. At three different
sites the number of such sherds was counted in local dwelling
excavations.
Shall we reject or not reject the claim that there is no difference
in population mean Mimbres classic black-on-white sherd counts for
the three sites? Test given
Given that P-Value > 0.1,...
The highway department is testing two types of reflecting paint for concrete bridge end pillars. The...
The highway department is testing two types of reflecting paint
for concrete bridge end pillars. The two kinds of paint are alike
in every respect except that one is orange and the other is yellow.
The orange paint is applied to 12 bridges, and the yellow paint is
applied to 12 bridges. After a period of 1 year, reflectometer
readings were made on all these bridge end pillars. (A higher
reading means better visibility.) For the orange paint, the mean...
0. A group of statistics students wanted to investigate the effect of social media on a person's self- esteem. For this purpose, they conducted a study where participants were randomly assign...
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Consider the following scenario. You conduct a RCBD ANOVA test and calculate a test statistic of...
Consider the following scenario. You conduct a RCBD ANOVA test and calculate a test statistic of 3.48 for your primary research question. You had 6 different treatment groups, and 5 levels of your blocking variable. What would be the most correct conclusion to come to using a significance level of 5%? O A. Reject the null hypothesis since the p value is greater than 0.05 and conclude that at least one of the treatment group means are different to the...
A social psychologist studying mass communication randomly assigned 87 volunteers to one of two experimental groups. Fifty-seven were instructed to get their news for a month only from television, and 30 were instructed to get their news for a month only from the Internet. After the month was up, all participants were tested on their knowledge of several political issues. The researcher simply predicted that there is some kind of difference. These were the results of the study. TV group:...
The highway department is testing two types of reflecting paint for concrete bridge end pillars. The two kinds of paint are alike in every respect except that one is orange and the other is yellow. The orange paint is applied to 12 bridges, and the yellow paint is applied to 12 bridges. After a period of 1 year, reflectometer readings were made on all these bridge end pillars. (A higher reading means better visibility.) For the orange paint, the mean...
Wind Mountain is an archaeological study area located in
southwestern New Mexico. Potsherds are broken pieces of prehistoric
Native American clay vessels. One type of painted ceramic vessel is
called Mimbres classic black-on-white. At three different
sites the number of such sherds was counted in local dwelling
excavations.
Shall we reject or not reject the claim that there is no difference
in population mean Mimbres classic black-on-white sherd counts for
the three sites? Test given
Given that P-Value > 0.1,...
The highway department is testing two types of reflecting paint
for concrete bridge end pillars. The two kinds of paint are alike
in every respect except that one is orange and the other is yellow.
The orange paint is applied to 12 bridges, and the yellow paint is
applied to 12 bridges. After a period of 1 year, reflectometer
readings were made on all these bridge end pillars. (A higher
reading means better visibility.) For the orange paint, the mean...
0. A group of statistics students wanted to investigate the effect of social media on a person's self- esteem. For this purpose, they conducted a study where participants were randomly assigned to one of three groups: browsing ENews for 2 minutes and then taking a survey, browsing Facebook for 2 minutes and then taking a survey, or a control group where the participants just took the survey. The survey, based on the Rosenberg self-esteem scale, was the tool used to...
Consider the following scenario. You conduct a RCBD ANOVA test and calculate a test statistic of 3.48 for your primary research question. You had 6 different treatment groups, and 5 levels of your blocking variable. What would be the most correct conclusion to come to using a significance level of 5%? O A. Reject the null hypothesis since the p value is greater than 0.05 and conclude that at least one of the treatment group means are different to the...
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