Calculus and Above

Calculus Questions? Ask a Mathematician for Answers ASAP

Connect one-on-one with {0} who will answer your question

In a manufacturing process a...

In a manufacturing process a machine produces bolts that have an average length of 3 inches with a variance of .03. If we randomly select three bolts from this process: What is the probability the mean length of the bolt is at most 3.1 inches?

A. 84.13%

B. 100%

C. 71.57%

D. 28.43%

E. 15.87%

....how to solve for this?

I'm using 3.1-3 / (.03/1.7320)

Which gets me a z value of 5.77 ... and that's where I'm stumped

A. 84.13%

B. 100%

C. 71.57%

D. 28.43%

E. 15.87%

....how to solve for this?

I'm using 3.1-3 / (.03/1.7320)

Which gets me a z value of 5.77 ... and that's where I'm stumped

Show More

Show Less

Was this answer helpful?

Describe your issueThe assistant will guide you

Chat 1:1 with a tutorLicensed Experts are available 24/7

100% satisfaction guaranteeGet all the answers you need

Related Calculus and Above Questions

To learn about the proportion of SFSU students that pay

To learn about the proportion of SFSU students that pay out-of-state tuition, we took a sample of 250 students and learnt that 80 of them pay the out-of-state tuition. Construct a 95% confidence inter… read more

I need to solve a homework that is related to statistics

I need to solve a homework that is related to statistics (sampling, t-student, confidence interval etc.), but I'm without time to solve it and my deadline is today. Can you provide an answer to the ex… read more

The manager of a grocery store has taken a random sample of

The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes. The population standard deviatio… read more

The average price of a 42-in. television on an electronics

The average price of a 42-in. television on an electronics store's website is $820. Assume the price of these televisions follows the normal distribution with a standard deviation of $150. Complet… read more

Last Question 5. A standard IQ test produces normally

Last Question 5. A standard IQ test produces normally distributed results with a mean of 100 and a standard deviation of 15. If an average IQ is defined to be any IQ between 90 and 109, find the proba… read more

A company produces steel rods. The lengths of the steel rods

A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 105.1-cm and a standard deviation of 0.8-cm. For shipment, 22 steel rods are bundled together.Find … read more

A company produces steel rods. The lengths of the steel rods

A company produces steel rods. The lengths of the steel rods are normally distributed with a mean of 212.3-cm and a standard deviation of 0.5-cm. For shipment, 23 steel rods are bundled together.Find … read more

In a random sample of six microwave ovens, the mean repair

In a random sample of six microwave ovens, the mean repair cost was $85.00 and the standard deviation was $11.00. Assume the population is normally distributed and use a t-distribution to construc… read more

Question 1 of 20 5.0 Points The lifetimes of light bulbs of

Question 1 of 20 5.0 Points The lifetimes of light bulbs of a particular type are normally distributed with a mean of 270 hours and a standard deviation of 11 hours. What percentage of the bulbs has l… read more

1. The cashier service time at the local branch of the Rivertown

1. The cashier service time at the local branch of the Rivertown bank has an exponential distribution with a mean of 2.5 minutes. What is the probability that the service time: Is between 2 and 4 minu… read more

5.15 When a customer places an order with Rudys On- Line

5.15 When a customer places an order with Rudy's On- Line Office Supplies, a computerized accounting information system (AIS) automatically checks to see if the customer has exceeded his or her credit… read more

I have about 40 more minutes to turn in my statistic assignment

I have about 40 more minutes to turn in my statistic assignment and need help. Is there someone available to assist me? Below are the 1. Brian Vanecek, VP of Operations at Portland Trust Bank, is eval… read more

1. If Z is a standard normal variable, what is the probability

1. If Z is a standard normal variable, what is the probability that Z lies between -0.55 and 0.55? (Points : 7) 0.9000 0.4176 -0.9000 -0.4176 2. If Z is a standard normal variable, what is the probabi… read more

What is the probability that a pipe is between 10.22ft and 10.35ft

A manufacturer has designed a process to produce pipes that are 10 feet long. The distribution of the pipe length, however, is actually Uniform on the interval 10 feet to 10.55 feet. Assume that the l… read more

1. A set of 50 data values has a mean of 44 and a variance

1. A set of 50 data values has a mean of 44 and a variance of 16. I. Find the standard score (z) for a data value = 51. II. Find the probability of a data value < 51. 2. Find the area under the sta… read more

" Please Write Out All Steps Taken To Get Too The Answer -

" Please Write Out All Steps Taken To Get Too The Answer - along with the formulas used to get the answer " : 1) What is the probability that at least four of five randomly selected vehicles are overd… read more

1. The smaller the p-value, the more we doubt the null hypothesis?

1. The smaller the p-value, the more we doubt the null hypothesis? True or False. 2. If a null hypothesis is not rejected at a significance level of .05, it will ____ be rejected at a significance lev… read more

Explain what a “sampling distribution of sample means” is.

Explain what a “sampling distribution of sample means” is. Be specific! Fill in the blanks in the statements below. The Central Limit Theorem states that as the sample size increases, the distribution… read more

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.

JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.

Web sites like justanswer.com/legal

...leave nothing to chance.

...leave nothing to chance.

Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.

Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.

I will tell you that...the things you have to go through to be an Expert are quite rigorous.

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

Los Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

Hesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

Kernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

Woodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

Elkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

Dallas, TX

< Previous | Next >

Mr. Gregory White

Master's Degree

114 satisfied customers

M.A., M.S. Education / Educational Administration

SusanAthena

Master's Degree

102 satisfied customers

Tutor for Algebra, Geometry, Statistics. Explaining math in plain English.

Dr Arthur Rubin

Doctoral Degree

97 satisfied customers

Ph.D. in Mathematics, 1978, from the California Institute of Technology, over 20 published papers

JACUSTOMER-yrynbdjl-

Master's Degree

42 satisfied customers

I have a MS in Mathematics and I have taught Mathematics for 10 years at the college level.

Don

Master's Degree

29 satisfied customers

M.S. Astronautical Engineering. Math/Sci/Comp Tutor

Kofi

PhD in Statistics

7,345 satisfied customers

Masters in Mathematics and Statistics

Sandhya_sharma

Master's Degree

5,309 satisfied customers

I hold M.Sc and M.Phil degrees in math and have several years of teaching experience.

< Previous | Next >

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.