Manufacture of a certain component requires three different machining operations. Machining time for each operation has a normal distribution, and the three times areindependent of one another. The mean values are 20, 30, and 15 min, respectively, and the standard deviations are 1, 2, and 1.3 min, respectively. What is the probabilitythat it takes at most 1 hour of machining time to produce a randomly selected component? (Round your answer to four decimal places.)In USE SALT

Consider that the mean and standard deviation of a random variable X are µ and σ, respectively.…

Answered: Manufacture of a certain component…

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

The table below shows the frequency distribution of the rainfall on 52 consecutive Wednesdays in a certain city. Use the frequency distribution to construct a histogram. Do the data appear to have a distribution that is approximately normal? Class 0-0.19 0.20 -0.39 0.40 -0.59 0.60 -0.79 0.80 -0.99 1.00-1.19 1.20 - 1.39 Frequency 21 10 6 3 7 4 1 Choose the correct histogram below. O A. O B. O C. 30- 20 10- 0- 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 30- 20- 104 0-F 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 30 20- 10- 0- 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Q Q Q G Q Q M
The Normal model N(150,10) describes the distribution of scores on the LSAT, a standardized test required by most law schools. Which of the following questions asks for a probability, and which asks for a measurement? Identify the type of problem and then answer the given question. a. A law school applicant scored at the 60th percentile on the LSAT. What was the applicant's LSAT score? b. A law school applicant scored 164 on the LSAT. This applicant scored higher than what percentage of LSAT test takers? a. Identify the type of problem. Statement a asks for a What was the applicant's LSAT score? (Round to the nearest integer as needed.) b. Identify the type of problem. Statement b asks for a This applicant scored higher than what percentage of LSAT test takers? |% (Round to the nearest integer as needed.)
A scientist found that the lengths of a certain population of snakes can be reasonably described using a normal distribution with a mean of 42 cm and a standard deviation of 2 cm. If the scientist collected a sample of 89 snakes, how many of the snakes would be expected to have a length less than 40 cm? A 14 30 C 60 D 74
Normal probability plots for three data sets are shown below. Which plot indicates that the data are approximately normally distributed? C. A. O O O O Plot B Plot A Plot C Plots A and B B. Q ME
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?
Answer.
Assume that adults have IQ scores that are normally distributed with a mean of μ=105 and a standard deviation σ=20. Find the probability that a randomly selected adult has an IQ less than 129. Click to view page 1 of the table. LOADING... Click to view page 2 of the table. LOADING... Question content area bottom Part 1 The probability that a randomly selected adult has an IQ less than 129 is enter your response here. (Type an integer or decimal rounded to four decimal places as needed.)
The table below shows the frequency distribution of the rainfall on 52 consecutive Tuesdays in a certain city. Use the frequency distribution to construct a histogram. Do the data appear to have a distribution that is approximately normal? Class 0-0.19 0.20 -0.39 0.40 -0.59 0.60-0.79 0.80 -0.99 1.00-1.19 1.20-1.39 Frequency 22 13 4 1 5 6 1 Choose the correct histogram below. OA. OB. O C. 30- 20- 10- 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 30- 20- 10- 0+ 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 30- 20- 10- 0+ 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 Q Q Q Do the data appear to have a distribution that is approximately normal? O A. No, it is approximately uniform. OB. No, it is not symmetric. OC. No, it has no obvious maximum. O D. Yes, it is approximately normal.
find the standard deviation based on the following given where you have three states: good, average and poor where Ps are 30%,50% and 20% and Rs are 20%, 15% and -4% respectively-? a. 0.0074 b. 0.0278 c. 0.127 d. 0.167
Find the variance of the probability distribution for the histogram shown.

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