Question

You are interested in whether students that have a male instructors perform differently on exams. To...

You are interested in whether students that have a male instructors perform differently on exams. To investigate this, you gather a sample of 5 students that have a male instructor and compare their exam average to the average of all instructors.  The data are below:

Male Instructors

All Instructors

x ̅=74.5

µ=76.8

s = 7.62

Draw your sampling distribution and establish the rejection region. What is your critical t-value when alpha is set at a=.05 (hint: you need to use the t-table)

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
You are interested in whether students that have a male instructors perform differently on exams. To...
You are interested in whether students that have a male instructors perform differently on exams. To investigate this, you gather a sample of 5 students that have a male instructor and compare their exam average to the average of all instructors.  The data are below: Male Instructors All Instructors x ̅=74.5 µ=76.8 s = 7.62 Explain/interpret your findings There is no significant differences between performance on exams regardless of the sex of the instructor. There is a significant difference between performance...
Administrators are interested in knowing whether they have significantly higher scores on final exams than the...
Administrators are interested in knowing whether they have significantly higher scores on final exams than the general population of univerities (mu=76.5). After choosing a random sample of 27 students, the administrators found that the average final exam score for that sample was 82.6, with a standard error of 3.4. Set up the criteria for making a decision. That is, find the critical value. Let alpha = .05.
You are interested in whether a study intervention significantly affects students’ grades on a statistics exam....
You are interested in whether a study intervention significantly affects students’ grades on a statistics exam. You recruit a sample of 36 students from a normally distributed population with µ = 75 and s = 7.5. You chose an alpha level of .05 and perform a two-tailed hypothesis test. After participating in the study intervention, the students’ statistics exam average is 79. Perform a z-test to determine whether the study intervention significantly affected students’ exam grades. (0.5 points) a) After...
An education minister would like to know whether students at Gedrassi high school on average perform...
An education minister would like to know whether students at Gedrassi high school on average perform better at English or at Mathematics. Denoting by μ1 the mean score for all Gedrassi students in a standardized English exam and μ2 the mean score for all Gedrassi students in a standardized Mathematics exam, the minister would like to get a 95% confidence interval estimate for the difference between the means: μ1 - μ2. A study was conducted where many students were given...
You are interested in determining whether the grades of current high school students in Grand Forks...
You are interested in determining whether the grades of current high school students in Grand Forks are different than the grades of past students. The state board of education is able to tell you that the mean GPA for students graduating in Grand Forks in the past 40 years is 2.82, but that is all the information they have. You randomly select 90 students who are about to graduate and compute their mean GPA. Which statistical test will tell you...
You are curious if two types of music, classical or rock, have different effects on the...
You are curious if two types of music, classical or rock, have different effects on the ability of college students to perform a series of mental tasks requiring concentration. You gather two groups of participants and have them perform a series of tasks while listening to music and record the number of errors they make in completing the tasks. Group 1 listens to classical music and Group 2 listens to rock. You believe classical music will have a more calming...
I am interested in whether OSU males and females have the same grade point average. Use...
I am interested in whether OSU males and females have the same grade point average. Use the table to perform a difference of means test and tell me the result of the test. (Remember you have to calculate the variance for each variable using the equation with n-1 in the denominator)             Obs Males Females 1 3.48 2.39 2 2.05 2.89 3 3.52 1.84 4 2.77 1.77 5 3.96 2.67 6 2.20 1.98 7 2.50 3.92 8 3.10 1.91 sums...
A group of Psychology students was interested in writing a paper for their research class concerning...
A group of Psychology students was interested in writing a paper for their research class concerning the difference between girls and boys and their friendships. They determined to study primary school aged children on the playgrounds of schools. They hypothesized that girls would pursue narrower, more intense friendship groups than boys, that is, they would interact with fewer other children than would the boys on average. They selected 30 boys and 30 girls to watch at their schools. On average...
A school psychologist is interested in whether time has changed the problem with student parking that has been discussed for a few years.
A school psychologist is interested in whether time has changed the problem with student parking that has been discussed for a few years. As the student population has grown the psychologist fully suspects that the time to find parking has become worse rather than better for the student body. Over the past decade the average amount of time to find parking for students is 15 minutes (µ=15). The current sample’s information is as follows: M=19 minutes and a S= 6...
A researcher was interested in how students’ Graduate Record Examinations scores (GREQ- Quantitative and GREV-Verbal) predict...
A researcher was interested in how students’ Graduate Record Examinations scores (GREQ- Quantitative and GREV-Verbal) predict college students’ graduate school Grade Point Average (GGPA). He collects data from 30 college students. The GRE Quantitative (X1) and GRE Verbal (X2) scores can range from 400-1600 (Note. This is the old GRE score scale). GGPA (Y) can range from 0.00 to 4.00. f. What proportion of variance in graduate grade point average cannot be accounted by the variability in the quantitative GRE...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT