.The duration of a certain cancer from the onset of symptoms until death ranges from 5 to 15years; their average is 7 years with a standard deviation of 3 years. A sample record of 20 patientswere taken at random. What is the approximate probability that the average duration is less than6 years?0.08810.07810.09810.0681

The mean is 7 years and the standard deviation is 3 years.

Answered: . The duration of a certain cancer from…

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

Cody took his first physics exam and scored an 80. The population mean for this exam is 70, and the standard deviation is 5. What is the probability of selecting a person with a score greater than Cody’s?
If the probability of choosing a red chip from a bucket is 0.32. What is the probability of not choosing a red chip? (Round to 2 decimal places) CS Scanned with CamScanner
. Patients at the outpatient surgical center in Braintree, MA have an average recovery time of 14 days with a standard deviation of 3 Assuming these raw scores form a normal distribution What is the probability of getting a raw score between 13 and 15?
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
The mean score for a test was 81 .52 with a standard deviation of 9.2. The scores are normally distributed. If a person is selected at random find that the probability that his/her score was: (Round to the nearest 1 000 th ) Less than 75 Between 5 and 9 More than 95
The NJ Department of Health has reported the average life span of NJ residents is 81 years. If the standard deviation is σ = 4 years, what is the probability of a person living to at least 92 years of age?
A population has an average of 50 and a standard deviation of 10. If a random sample of size 64 is drawn from this population, what is the probability that the sample mean is: Question 9 Greater than 52? Your answer should be in percent (between 0 and 100) and keep two digits after the period. So, if your answer is 13%, enter 13.00.
According to a study done by UCB students, the height for Martian adult males is normally distributed with an average of 65 inches and a standard deviation of 2.4 inches. Suppose one Martian adult male is randomly chosen. Let X = height of the individual. Round all answers to 4 decimal places where possible. %3D b. Find the probability that the person is between 62.4 and 65.3 inches. c. The middle 30% of Martian heights lie between what two numbers? Low: inches High: inches
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 X is a random variable with mean 16 and standard deviation 4 which follows normal distribution. Find the probability that x is less than 18? Round your answer to four decimals
Question B1 Jessie is a doctor at a clinic. Her consultation times (X) on patients are normally distributed with a mean of 7 minutes and a standard deviation of 1.2 minutes. (a) Find the probability that she spends 5.5 minutes to 6.4 minutes for consulting a patient. Correct your final answer to 4 decimal places.

SEE MORE QUESTIONS

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