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A researcher is interested in determining whether there is a difference in male college students and...
A researcher is interested in determining whether there is a difference in male college students and...
A researcher is interested in determining whether there is a difference in male college students and female college students' preference for taking online classes over on-campus classes. The researcher surveys 82 female students, and found that 15 preferred online classes. The researcher surveys 70 male students, and found that 10 preferred online classes. Let's perform a hypothesis test at the 5% significance level. Test whether the proportion of females who prefer online classes is greater than the proportion of males...
A college student is interested in whether there is a difference between male and female students...
A college student is interested in whether there is a
difference between male and female students in the amount of time
they spend studying each week. The student gathers information from
a random sample of male and female students on campus. The amounts
of time spent studying are normally distributed. The following
includes the data and the questions.
Males Females 27 25 25 9 10 16 22 14. a. What statistical test should be used to analyze these data? b....
9. (10 points) A researcher was interested in comparing the GPAs of male and female students...
9. (10 points) A researcher was interested in comparing the GPAs of male and female students at CofC. Two independent simple random samples of 49 females and 36 males Cof students resulted in the following summaries: Females: R1 = 3.25, s; = 0.26; Males: fz = 3.06,82 = 0.59. Is it reasonable to think that female CofC students have a higher mean GPA than male CofC students? a) State the null and altemative hypotheses symbolically. b) Check assumptions and choose...
2. Psychologist was interested in exploring whether or not male and female college students have different...
2. Psychologist was interested in exploring whether or not male and female college students have different driving behaviors. Is there sufficient evidence at the a= 0.05 level to conclude that the variance of the fastest speed driven by male college students differs from the variance of the fastest speed driven by female college students? Here is a descriptive summary of the results of her survey: Males (x) N=30 x = 108 Females (y) N = 25 y = 93.5 Sx...
The UGA Journalism Department is interested in determining if there is a significant difference in the...
The UGA Journalism Department is interested in determining if
there is a significant difference in the number of hours, on
average per week, that UGA males and UGA female students spend
reading any online or printed newspaper. Randomly selected students
at UGA were asked how many hours per week they read any online or
printed newspaper, their age, and gender. The 95% confidence
interval for reading newspapers on F - M is (-1.2, 1.2).
1) What would this interval let...
A researcher claims that the proportion of college students who plan to participate in community service...
A researcher claims that the proportion of college students who plan to participate in community service after graduation is greater than 35%. To test this claim, a survey asked 500 randomly selected college students if they planned to perform community service after graduation. Of those students, 195 indicated they planned to perform community service. The following is the setup m the following hypothesis test: H0:p=0.35 Ha:p>0.35 In this example, the p-value was determined to be 0.030. Come to a conclusion...
The UGA Journalism Department is interested in determining if there is a significant difference in the number of hours,...
The UGA Journalism Department is interested in determining if
there is a significant difference in the number of hours, on
average per week, that UGA males and UGA female students spend
reading any online or printed newspaper. Randomly selected students
at UGA were asked how many hours per week they read any online or
printed newspaper, their age, and gender. The 95% confidence
interval for reading newspapers on F - M is (-1.5, 1.1).
1) What would this interval let...
A researcher in interested in whether students who are musicians have higher intelligence test sc...
A researcher in interested in whether students who are musicians have higher intelligence test scores than students in the general population. The mean for the general population is 100. The researcher selects musicians from local high schools and gives them an intelligence test, with a mean of 105. SS 725 for the 2. 30 sample Null Hypothesis (Ho): μ State in words: Alternative Hypothesis (Ha): μ > State in words: df= t critical value (with α : .05): One-tailed or...
A researcher watching House Hunters was curious as to whether there was a relationship between gender...
A researcher watching House Hunters was curious as to whether there was a relationship between gender and favorite preferences for house styles. In order to test this, the researcher conducted a survey in which she asked males and females which style of house (colonial, ranch, or cape cod style) they preferred the most. Colonial Ranch Cape Cod Male 22 9 28 Female 18 14 30 Conduct a hypothesis test using the following steps. Set alpha = .01 2A. Step 1:...
a) b) Salary information regarding two independent random samples of male and female employees of a...
a)
b)
Salary information regarding two independent random samples of male and female employees of a large company is shown below. Male Female 64 36 Sample size Sample mean salary (in $1000s) Population variance 44 41 128 72 If you are interested in testing whether the average salary of males is significantly greater than that of females, what is the null hypothesis? O Ho: male < female Ho male > female Ho: male > female None of the answers is...
A researcher is interested in determining whether there is a difference in male college students and female college students' preference for taking online classes over on-campus classes. The researcher surveys 82 female students, and found that 15 preferred online classes. The researcher surveys 70 male students, and found that 10 preferred online classes. Let's perform a hypothesis test at the 5% significance level. Test whether the proportion of females who prefer online classes is greater than the proportion of males...
A college student is interested in whether there is a
difference between male and female students in the amount of time
they spend studying each week. The student gathers information from
a random sample of male and female students on campus. The amounts
of time spent studying are normally distributed. The following
includes the data and the questions.
Males Females 27 25 25 9 10 16 22 14. a. What statistical test should be used to analyze these data? b....
9. (10 points) A researcher was interested in comparing the GPAs of male and female students at CofC. Two independent simple random samples of 49 females and 36 males Cof students resulted in the following summaries: Females: R1 = 3.25, s; = 0.26; Males: fz = 3.06,82 = 0.59. Is it reasonable to think that female CofC students have a higher mean GPA than male CofC students? a) State the null and altemative hypotheses symbolically. b) Check assumptions and choose...
2. Psychologist was interested in exploring whether or not male and female college students have different driving behaviors. Is there sufficient evidence at the a= 0.05 level to conclude that the variance of the fastest speed driven by male college students differs from the variance of the fastest speed driven by female college students? Here is a descriptive summary of the results of her survey: Males (x) N=30 x = 108 Females (y) N = 25 y = 93.5 Sx...
The UGA Journalism Department is interested in determining if
there is a significant difference in the number of hours, on
average per week, that UGA males and UGA female students spend
reading any online or printed newspaper. Randomly selected students
at UGA were asked how many hours per week they read any online or
printed newspaper, their age, and gender. The 95% confidence
interval for reading newspapers on F - M is (-1.2, 1.2).
1) What would this interval let...
The UGA Journalism Department is interested in determining if
there is a significant difference in the number of hours, on
average per week, that UGA males and UGA female students spend
reading any online or printed newspaper. Randomly selected students
at UGA were asked how many hours per week they read any online or
printed newspaper, their age, and gender. The 95% confidence
interval for reading newspapers on F - M is (-1.5, 1.1).
1) What would this interval let...
A researcher in interested in whether students who are musicians have higher intelligence test scores than students in the general population. The mean for the general population is 100. The researcher selects musicians from local high schools and gives them an intelligence test, with a mean of 105. SS 725 for the 2. 30 sample Null Hypothesis (Ho): μ State in words: Alternative Hypothesis (Ha): μ > State in words: df= t critical value (with α : .05): One-tailed or...
a)
b)
Salary information regarding two independent random samples of male and female employees of a large company is shown below. Male Female 64 36 Sample size Sample mean salary (in $1000s) Population variance 44 41 128 72 If you are interested in testing whether the average salary of males is significantly greater than that of females, what is the null hypothesis? O Ho: male < female Ho male > female Ho: male > female None of the answers is...
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