Question

Problem 2: I am performing a before and after evaluation on 30 students who have taken...

Problem 2:

I am performing a before and after evaluation on 30 students who have taken a keyboarding class. I want to see if the course improved their words per minute keyed.

State the Null and Alternate Hypothesis:

The statistic that I would use is:

What would my t critical be for this calculation at a 0.10 level of significance?

If my t calculated = 1.62, would I reject or fail to reject the null hypothesis?

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

Homework Answers

Answer #1

please appreciate if the solution is satisfactory

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
Women athletes at the a certain university have a long-term graduation rate of 67%. Over the...
Women athletes at the a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 36 women athletes at the school showed that 23 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67%? Use a 10% level of significance. (a) What is the level of significance? State the null and alternate hypotheses. H0: p = 0.67; H1: p ≠...
I have two devices to check my blood pressure; one checks it at the wrist, and...
I have two devices to check my blood pressure; one checks it at the wrist, and the other just above the elbow. I want to see if there is any difference in the two machines, so I check my blood pressure with both devices at the same time one morning. On the next five mornings, i repeat this check with both machines. The following table show the systolic reading at the elbow and wrist for these six days: elbow 134...
A researcher wants to determine whether high school students who attend an SAT preparation course score...
A researcher wants to determine whether high school students who attend an SAT preparation course score significantly different on the SAT than students who do not attend the preparation course. For those who do not attend the course, the population mean is 1050 (? = 1050). The 16 students who attend the preparation course average 1150 on the SAT, with a sample standard deviation of 300. On the basis of these data, can the researcher conclude that the preparation course...
The time taken for healthy Canadian adults to complete a logic problem is believed to have...
The time taken for healthy Canadian adults to complete a logic problem is believed to have a mean 40 seconds. It is of interest to investigate whether UBC students perform better on average than healthy adult Canadians, so the logic problem is given to a sample of 80 UBC students, and their times to solution are recorded. The sample mean and standard deviation are 36 seconds and 17 seconds. Part a) What is/are the parameters of interest relevant to this...
1. After performing an ANOVA test, with (3,4) degrees of freedom, for data collected during an...
1. After performing an ANOVA test, with (3,4) degrees of freedom, for data collected during an experiment trying to determine if there is at least one difference between groups. You get a calculated F value of 7.52. Using the table below, find the appropriate critical F value. What should be your conclusion(s), based on those 2 F values and α? Select ALL that apply Critical values of F (α= 0.05) Group of answer choices: A. My calculated F value is...
When I did this problem I got a very small P value and was told it...
When I did this problem I got a very small P value and was told it is wrong, I do not know which other test would be appropriate for this question. Here is a data set containing plant growth measurements of plants grown in solutions of commonly-found chemicals in roadway runoff. Distilled H2O Petro NaCl MgCl NaCl + MgCl 19.93 19.85 19.87 19.91 19.73 19.91 20.06 19.88 19.92 19.77 20.08 19.99 20.04 19.84 19.75 19.99 19.88 20.05 19.98 19.93 19.9...
I. Solve the following problem: For the following data: 1, 1, 2, 2, 3, 3, 3,...
I. Solve the following problem: For the following data: 1, 1, 2, 2, 3, 3, 3, 3, 4, 4, 5, 6 n = 12 b) Calculate 1) the average or average 2) quartile-1 3) quartile-2 or medium 4) quartile-3 5) Draw box diagram (Box & Wisker) II. PROBABILITY 1. Answer the questions using the following contingency table, which collects the results of a study to 400 customers of a store where you want to analyze the payment method. _______B__________BC_____ A...
Independent-Samples t-Test In a research project, researchers track the health and cognitive functions of the elderly...
Independent-Samples t-Test In a research project, researchers track the health and cognitive functions of the elderly in the community. To examine any possible gender differences in their sample, they want to see if the females and the males differ significantly on the education level (number of years of formal schooling). The researchers are not predicting any direction in the possible gender differences so the hypotheses should be non-directional. They would like to run a two-tailed test with α = .10....
Instructions: In 1974, Loftus and Palmer conducted a classic study demonstrating how the language used to...
Instructions: In 1974, Loftus and Palmer conducted a classic study demonstrating how the language used to ask a question can influence eyewitness memory. In the study, college students watched a film of an automobile accident and then were asked questions about what they saw. One group was asked, “About how fast were the cars going when they smashed into each other?” Another group was asked the same question except the verb was changed to “hit” instead of “smashed into.” The...
Using the model proposed by Lafley and Charan, analyze how Apigee was able to drive innovation....
Using the model proposed by Lafley and Charan, analyze how Apigee was able to drive innovation. case:    W17400 APIGEE: PEOPLE MANAGEMENT PRACTICES AND THE CHALLENGE OF GROWTH Ranjeet Nambudiri, S. Ramnarayan, and Catherine Xavier wrote this case solely to provide material for class discussion. The authors do not intend to illustrate either effective or ineffective handling of a managerial situation. The authors may have disguised certain names and other identifying information to protect confidentiality. This publication may not be...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT