Suppose a batch of metal shafts produced in a manufacturing company have a standard deviation of 1.4 and a mean diameter of 212 inches.If 80 shafts are sampled at random from the batch, what is the probability that the mean diameter of the sarmple shafts would be greater than211.9 inches? Round your answer to four decmal places

Answered: Image /qna-images/answer/8fdbf5d0-9dea-423b-a107-1a1cf8558bfa.jpg

Answered: Suppose a batch of metal shafts…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

Suppose the horses in a large stable have a mean weight of 1128⁢lbs, and a standard deviation of 58lbs. What is the probability that the mean weight of the sample of horses would differ from the population mean by less than 10⁢lbs if 37 horses are sampled at random from the stable? Round your answer to four decimal places.
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 5.6 years, and standard deviation of 1.1 years.If 7 items are picked at random, 2% of the time their mean life will be less than how many years?Give your answer to one decimal place.
Suppose the mean income of firms in the industry for a year is 85 million dollars with a standard deviation of 19 million dollars. If incomes for the industry are distributed normally, what is the probability that a randomly selected firm will earn less than 104 million dollars? Round your answer to four decimal places.
Suppose that the walking step lengths of adult males are normally distributed with a mean of 2.4 feet and a standard deviation of 0.5 feet. A sample of 35 men’s step lengths is taken. Step 1 of 2 : Find the probability that an individual man’s step length is less than 1.9 feet. Round your answer to 4 decimal places, if necessary.
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 6.1 years, and standard deviation of 1.9 years. If 13 items are picked at random, 2% of the time their mean life will be less than how many years? Give your answer to one decimal place.
A manufacturer knows that their items have a normally distributed lifespan, with a mean of 3.8 years, and standard deviation of 0.6 years.If 21 items are picked at random, 3% of the time their mean life will be less than how many years?Give your answer to one decimal place.
Suppose that the walking step lengths of adult males are normally distributed with a mean of 2.5 feet and a standard deviation of 0.2 feet. A sample of 41 men’s step lengths is taken. Step 2 of 2 : Find the probability that the mean of the sample taken is less than 2.2 feet. Round your answer to 4 decimal places, if necessary.
Suppose that the walking step lengths of adult males are normally distributed with a mean of 2.8 feet and a standard deviation of 0.4 feet. A sample of 74 men’s step lengths is taken. Step 1 of 2: Find the probability that an individual man’s step length is less than 2.3 feet. Round your answer to 4 decimal places, if necessary
Suppose the mean income of firms in the industry for a year is 25 million dollars with a standard deviation of 9 million dollars. If incomes for the industry are distributed normally, what is the probability that a randomly selected firm will earn between 36 and 42 million dollars? Round your answer to four decimal places.
Suppose that the walking step lengths of adult males are normally distributed with a mean of 2.7 feet and a standard deviation of 0.3 feet. A sample of 70 men’s step lengths is taken. Step 2 of 2 : Find the probability that the mean of the sample taken is less than 2.4 feet. Round your answer to 4 decimal places, if necessary.
Suppose that the walking step lengths of adult males are normally distributed with a mean of 2.6 feet and a standard deviation of 0.3 feet. A sample of 59 men's step lengths is taken. Step 1 of 2: Find the probability that an individual man's step length is less than 2.3 feet. Round your answer to 4 decimal places, if necessary.
Suppose a batch of steel rods produced at a steel plant have a mean length of 178 millimeters, and a standard deviation of 12 millimeters. If 76 rods are sampled at random from the batch, what is the probability that the mean length of the sample rods would differ from the population mean by less than 0.56 millimeters? Round your answer to four decimal places.

Recommended textbooks for you

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability (10th Edition)

Probability

ISBN:

9780134753119

Author:

Sheldon Ross

Publisher:

PEARSON

A First Course in Probability

Probability

ISBN:

9780321794772

Author:

Sheldon Ross

Publisher:

PEARSON

SEE MORE TEXTBOOKS