Question

1. Null (Ho) and Alternative (Ha) Hypotheses a. The time needed for college students to complete...

1. Null (Ho) and Alternative (Ha) Hypotheses

a. The time needed for college students to complete a certain paper and pencil maze follows a normal distribution with a mean of 30 seconds and a standard deviation of 3 seconds. You wish to see if the mean time ? is changed by vigorous exercise, so you have a group of nine college students exercise vigorously for 20 minutes and then complete the maze.

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The time needed for college students to complete a certain paper-and-pencil maze follows a normal distribution...
The time needed for college students to complete a certain paper-and-pencil maze follows a normal distribution with a mean of 30 seconds and a standard deviation of 3.1 seconds. You wish to see if the mean time ? is changed by vigorous exercise, so you have a group of 25 college students exercise vigorously for 30 minutes and then complete the maze. It takes them an average of ?¯=28.1seconds to complete the maze. Use this information to test the hypotheses...
Does vigorous exercise affect concentration? In general, the time needed for people to complete a certain...
Does vigorous exercise affect concentration? In general, the time needed for people to complete a certain paper-and-pencil maze follows a normal distribution, with a mean of 30 seconds and a standard deviation of three seconds. You wish to see if the mean time μ is changed by vigorous exercise, so you have a random sample of nine employees of your company (that you assume are representative of people in general) exercise vigorously for 30 minutes and then complete the maze....
The time needed for college students to complete a certain paper-and-pencil maze follows a normal distribution...
The time needed for college students to complete a certain paper-and-pencil maze follows a normal distribution with a mean of 30 seconds and a standard deviation of 3 seconds. You wish to see if the mean time μ μ is changed by vigorous exercise, so you have a group of 15 college students exercise vigorously for 30 minutes and then complete the maze. It takes them an average of x¯=27.2 x ¯ = 27.2 seconds to complete the maze. Use...
The time needed for students complete a certain paper and pencil maze follows an approximately Normal...
The time needed for students complete a certain paper and pencil maze follows an approximately Normal distribution and has a mean of 70 seconds and a standard deviation of 15 seconds. a) If a student takes 100 seconds to complete the maze, what percentile would the student be? b) What percentage of students complete the maze between 50 and 60 seconds?
state the null and alternative hypotheses (complete step 1 of the hypothesis test.) Conduct a hypothesis...
state the null and alternative hypotheses (complete step 1 of the hypothesis test.) Conduct a hypothesis test to determine if the mean time to write a stats final for 22 professors is significantly different from 118 minutes.
The time needed to complete a final examination in a particular college course is normally distributed...
The time needed to complete a final examination in a particular college course is normally distributed with a mean of 80 minutes and a standard deviation of 10 minutes. If students have only 100 minutes to complete the exam, what percentage of the class will not finish the exam in time?
Read carefully through the following problems (Questions 5-8). Each problem is accompanied by a null and...
Read carefully through the following problems (Questions 5-8). Each problem is accompanied by a null and an alternative hypothesis, and each set of hypotheses includes at least one mistake. We would like you to identify what the mistake(s) is/are. A claim is made that adults spend an average of $475 per year on birthday presents. A researcher believes this value is too low, and she sets out to gather data to test this claim. Her null and alternative hypotheses are...
11) The time needed to complete a final examination in a particular college course is normally...
11) The time needed to complete a final examination in a particular college course is normally distributed with a mean of 90 minutes and a standard deviation of 15 minutes. Answer the following questions. a. What is the probability of completing the exam in one hour or less? b. What is the probability that a student will complete the exam in more than 60 minutes but less than 105 minutes? c. Assume that the class has 60 students and that...
The time needed to complete a final quiz in a particular college course is normally distributed...
The time needed to complete a final quiz in a particular college course is normally distributed with a mean of 77 minutes and a standard deviation of 12 minutes. Answer the following questions. a. What is the probability of completing the quiz in one hour or less (to 4 decimals)? b. What is the probability that a student will complete the quiz in more than 60 minutes but less than 75 minutes (to 4 decimals)? c. Assume that the class...
The average length of time required to complete a college achievement test is approximately normal with...
The average length of time required to complete a college achievement test is approximately normal with a mean of 65 minutes and a standard deviation of 11 minutes. When should the test be terminated (in minutes) if you wish to allow sufficient time for 80% of the students to complete the test? (Round your answer to two decimal places.) ____________ min
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT