Question

9.   Suppose that the time that it takes a student to complete this test is normally...

9.   Suppose that the time that it takes a student to complete this test is normally distributed. The mean time is 58 minutes with a standard deviation of 11 minutes. Use the empirical rule to solve the following questions. Answers using the normal calculator and not the empirical rule will be marked as wrong.

a.   What is the probability that a person will take between 47 and 58 minutes? (Draw a picture to show your answer.)
b.   What is the probability that a person will take more than 69 minutes to take the exam? (Draw a picture to show your answer.)
c.   What is the probability that a person will take less than 47 minutes to take the exam? (Draw a picture to show your answer.)
d.   The middle 95% of time taken to complete the exam is between what two values? (Draw a picture to show your answer.)
e.   What are the values for the middle 68% of test taking times? (Draw a picture to show your answer).
f.   What is the middle 99.5% of test taking times? (Draw a picture to show your answer.)
g.   Faster than what time is considered to be an unusually fast time to take the exam?

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

Homework Answers

Answer #1

The probability that a person will take between 47 and 58 minutes is

The probability that a person will take more than 69 minutes to take the exam

The probability that a person will take less than 47 minutes to take the exam is

The middle 95% of time taken to complete the exam is between what two values are 36 and 80

The middle 68% of test taking times are 47 and 69

The middle 99.5% of test taking times are 25 and 91

g) 80 minutes

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
7) The time it takes college freshman to complete the Mason Basic Reasoning Test is normally...
7) The time it takes college freshman to complete the Mason Basic Reasoning Test is normally distributed with a mean of 24.6 minutes with a standard deviation of 5.8 minutes. a) What is the probability that a college freshman will take more than 35 minutes to complete the exam? b) What is the probability that a student will take less than 20 minutes to complete the exam?
It has been found that the time taken to complete an emotional intelligence test is normally...
It has been found that the time taken to complete an emotional intelligence test is normally distributed, with an average time (μ) of 18 minutes and a standard deviation (σ) of 3.5 minutes. What is the probability that a randomly selected person will take: 2.3.1     Between 15 and 17 minutes to complete the test? Interpret your answer. (5)
The time it takes students to complete a quiz is Normally distributed with a mean of...
The time it takes students to complete a quiz is Normally distributed with a mean of 45 minutes and a standard deviation of 4 minutes.   a)What percent of all students take longer than 50 minutes to complete the quiz? Round your answer to the nearest whole percent. Don't write the percent symbol in your answer. b)If you take a sample of 30 students, what is the probability that the average amount of time needed to complete the quiz for this...
3. the time required for a student to complete the exam is uniformly distributed with a...
3. the time required for a student to complete the exam is uniformly distributed with a minimum time of 85 minutes and a maximum time of 125 minutes. Is this an example of discrete or a continuous uniform probability distribution? Please explain Please depict this probability distribution in some appropriate manner Please determine the probability that a randomly selected student requires less than 112 minutes to complete the exam. Show work Please determine the probability that a randomly selected student...
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. Answer the following questions. (a) What is the probability of completing the exam in one hour or less? (Round your answer to four decimal places.) (b) What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes? (Round your answer to...
he time needed to complete a final examination in a particular college course is normally distributed...
he 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. Answer the following questions. (a) What is the probability of completing the exam in one hour or less? (Round your answer to four decimal places.) (b) What is the probability that a student will complete the exam in more than 60 minutes but less than 65 minutes? (Round your answer to...
The time taken by a professor to grade a student’s take home final exam in Organizational...
The time taken by a professor to grade a student’s take home final exam in Organizational Behavior is uniformly distributed between 30 to 60 minutes. Let X be the time taken to grade a student’s final exam in Org Behavior. [Be sure to show your calculations.] a. Draw the probability distribution of X. b. What is the probability it will take less than 20 minutes to grade a student’s exam? c. What is the expected value of grading time for...
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 amount of time it takes for a student to complete a statistics exam is given...
The amount of time it takes for a student to complete a statistics exam is given by a random variable that is uniformly distributed between 35 and 74 mins A student is selected randomly. Find the probability of the following. Each answer or round to at least three decimal places. A. The student's time was between 41 and 47 mins B. The student's less than 41 mins. C. The student was more than 70 mins D. The student was more...
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 77 minutes and a standard deviation of 12 minutes. Answer the following questions. a. what is the probability of completing the exam in one hour or less (to 4 decimals) b. what is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes (to 4 decimals) c. assume that the class...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT