Question

The time for a certain female student to commute to SCSU is Normally Distributed with mean...

The time for a certain female student to commute to SCSU is Normally Distributed with mean 32.5 minutes and standard deviation of 6.3 minutes.

A. Find the probability her commuting time is more than 40 minutes.

B. Find the probability her commuting time is less than 43 minutes.

C. Find the value t such that 10% of her commuting times are greater than t.

D. Between which two values will the middle 70% of her commuting times fall?

E. Find the probability her commuting time is between 31.5 and 42.5 minutes.

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
The time for a certain female student to commute to SCSU is Normally Distributed with mean...
The time for a certain female student to commute to SCSU is Normally Distributed with mean 32.5 minutes and standard deviation of 6.5 minutes. Find the probability her commuting time is more than 40 minutes. Find the probability her commuting time is less than 43 minutes. Find the value t such that 10% of her commuting times are greater than t. Between which two values will the middle 70% of her commuting times fall? Find the probability her commuting time...
9. The time for a certain male student to commute to SCSU is Normally Distributed with...
9. The time for a certain male student to commute to SCSU is Normally Distributed with mean 48.3 minutes and standard deviation of 7.1 minutes. A random sample of 25 commuting times is taken. Find the 80th percentile of the sample mean of the commuting times. 10. The time for a certain male student to commute to SCSU is Normally Distributed with mean 48.3 minutes and standard deviation of 7.1 minutes. A random sample of 25 commuting times is taken....
A) The Transportation Department determines that in a certain metropolitan area the average one-way commute takes...
A) The Transportation Department determines that in a certain metropolitan area the average one-way commute takes 1 hour 10 minutes (70 minutes). The distribution of commute times is normally distributed with a standard deviation of 8 minutes. If you select a person randomly, what is the probability that his or her commute takes less than 55 minutes? B) Using this same distribution; If you select a person randomly, what is the probability that you find that his or her commute...
A college claims that commute times to the school have a mean of 60 minutes with...
A college claims that commute times to the school have a mean of 60 minutes with a standard deviation of 12 minutes.  Assume that student commute times at this college are normally distributed.  A statistics student believes that the variation in student commute times is greater than 12 minutes.  To test this a sample of 71 students in chosen and it is found that their mean commute time is 58 minutes with a standard deviation of 14.5 minutes. At the 0.05 level of...
The mean of the commute time to work for a resident of a certain city is...
The mean of the commute time to work for a resident of a certain city is 27.3 minutes. Assume that the standard deviation of the commute time is 7.6 minutes to complete parts​ (a) through​ (c). ​(a) What minimum percentage of commuters in the city has a commute time within 2 standard deviations of the​ mean? (b) What minimum percentage of commuters in the city has a commute time within 2.5 standard deviations of the​ mean? What are the commute...
The amount of time to complete a physical activity in a PE class is normally distributed...
The amount of time to complete a physical activity in a PE class is normally distributed with a mean of 37.6 seconds and a standard deviation of 5.4 seconds. Round answers to 4 decimal places. a) What is the probability that a randomly chosen student completes the activity in less than 31.5 seconds? b) What is the probability that a randomly chosen student completes the activity in more than 42.5 seconds? c) What proportion of students take between 33.8 and...
The time required to assemble an electronic component is normally distributed with a mean and a...
The time required to assemble an electronic component is normally distributed with a mean and a standard deviation of 24 minutes and 13 minutes, respectively. [You may find it useful to reference the z table.] a. Find the probability that a randomly picked assembly takes between 19 and 27 minutes. (Round "z" value to 2 decimal places and final answer to 4 decimal places.) b. It is unusual for the assembly time to be above 43 minutes or below 9...
The times that a person spends in the shower are normally distributed with a mean of...
The times that a person spends in the shower are normally distributed with a mean of 12.5 minutes and a standard deviation of 3.5 minutes. If 9 people is selected, find the probability that the mean time taken by him/her is greater than 15.2 minutes?
The times per week a student uses a lab computer are normally​ distributed, with a mean...
The times per week a student uses a lab computer are normally​ distributed, with a mean of 6.3 hours and a standard deviation of 1.2 hours. A student is randomly selected. Find the following probabilities. ​(a) Find the probability that the student uses a lab computer less than 5 hours per week. ​(b) Find the probability that the student uses a lab computer between 6 and 8 hours per week. ​(c) Find the probability that the student uses a lab...
An adult height in North America is normally distributed with a mean of 65 inches and...
An adult height in North America is normally distributed with a mean of 65 inches and a standard deviation of 3.5 inches. 1. Find the probability that the height is between 64 and 66 inches P(64<X<66) 2. Find the probability that the height is greater than 70 inches. P(X>70). 3. The middle 40% of heights fall between what two values? P(x1 < X < x2) so beyond lost on this one
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT