Question: 8.25 The downtime per day for a certain computing facility has averaged 4.0 hours for the last year. The standard deviation of downtimes of the

8.25 The downtime per day for a certain computing facility has averaged 4.0 hours for the last year.

The standard deviation of downtimes of the last 20 failures is 0.8 hours.

a Find the probability that the average daily downtime for a period of 20 days is between 1 and 5 hours.

b Find the probability that the total downtime for the 30 days is less than 115 hours.

c What assumptions are necessary for the answers in parts

(a) and

(b) to be valid approximations?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Statistics For Engineers And Scientists Questions!

Q:

8.13 The downtime per day for a certain computing facility averages 4.0 hours, with a standard deviation of 0.8 hour. P Aaq i=1Xi 7 aB = P(nX 7 a) = P(X 7 a>n) a Find the probability that the average...

Q:

"DISCUSS THE EFFECTS OF COVID 19 ON LABOR MARKETS AND THE ECONOMY" Provide an introduction and the background of your study, and clearly state what your research question or objective is. What real...

Q:

- What are your Company's Vision, Mission and Core Values? - Are there indications that these resonate with the employees? (Give some specific examples that employees consider the company Vision,...

Q:

Task 7 1. A discrete random variable has a mean of 400 and a variance of 64. What is the standard deviation? (Points : 1) 20 64 8 400 None of the above Question 2. 2. Data for a particular...

Q:

Final Paper Instructions/Guidelines: The final paper must be a minimum of 5 pages and a maximum of 7 pages in APA format. You can find APA guidelines in the Week Six folder under final paper tips....

Q:

BA 1605: Midterm Recap (Due: Feb. 27, 2015) Name _____________________________ 50 Student ID _____________________________ Section 01B 10:00~11:20 am Section 02B 01:00~02:20 pm [Questions 4 ~ 7] The...

Q:

Set Student Name: 1. Describe the relationship between two variables that have a correlation coefficient value: a. Near -1 b. Near 0 c. Near 1 2. Data was collected where a weightlifter was asked to...

Q:

Instuctor's Annotated Edition TENTH EDITION Understandable Statistics Concepts and Methods Charles Henry Brase Regis University Corrinne Pellillo Brase Arapahoe Community College Australia Brazil...

Q:

1. Assume stocks A and B have had identical stock prices every day for the past three years. Stock A pays a dividend but Stock B does not. Which one of these statements applies to these stocks for...

Q:

Thank u guys:) This is the reference pages but the questions are the last 3 pictures . . . . Craft - Mason Wage rate VET $29.00 Hours worked 50 hours per week for 20 weeks and 40 hours per week for...

Q:

Go to the website of the town where you reside and find the Comprehensive Annual Financial Report (CAFR). Find and print the auditors report. Warning: Be careful! CAFRs can be more than 100 pages, so...

Q:

Suggest at least three quality-assurance measures for the following businesses: a. Bank b. residential cleaning service c. commercial HVAC (heating, ventilation and air conditioning) contractor d....

Q:

Income Statement Income Gross sales 5750000 Sales returns and allowances 20000 Net sales 6660000 Cost of goods sold 2760000 Gross profit 3900000 Dividends received from stock investments in...

Q:

Explain the meaning of TQM.

Q:

Find (a) P{T12 1.4} and (b) t.025,9.

Q:

When we attempt to locate a target in two-dimensional space, suppose that the coordinate errors are independent normal random variables with mean 0 and standard deviation 2. Find the probability that...

Q:

Suppose that we are attempting to locate a target in three-dimensional space, and that the three coordinate errors (in meters) of the point chosen are independent normal random variables with mean 0...

Q:

Account balances of Machado Co. at August 31, 20X6 are as follows: Dividends Payable.. Preference Shares, $150 par... Paid-in Capital in Excess of Par-Ordinary Shares Machado's total paid-in capital...

Q:

Video Planet (VP) sells a big screen TV package consisting of a 60-inch plasma TV, a universal remote, and on-site installation by VP staff. The installation includes programming the remote to have...

Q:

On January 1, 2022, Ivanhoe Company issued $322,500,7%, 5-year bonds at face value. Interest is payable annually on January 1. (a) Your answer is partially correct. Prepare the journal entry to...