Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

problem 1) Mine superintendent of ABC Coal Co has recorded the amount of time per work shift that Section Crew A shuts down its machinery for the adjustments, repairs and moving. The records for the crews last 35 shifts are given below;

60     72    126   110    91    115    112
80     66    101    75     93    129    105
113  121    93     87    119    111    97
102  116   114   107    113    119    100
110   99    139   108    128    84      99

(a) Arrange the data in array from highest to lowest.

(b) It is believed that typical amount of downtime per shift is 108 minutes. How many of crew A last 35 shifts exceeded this limit? How many were under the limit?

(c) Construct a relative frequency distribution with 10-minute intervals.

problem 2) John, owner of a Bakery found that average weekly production level of his company was 11,398 loaves, and the variance was 49,729. If date used to find out the results were collected for 32 weeks. During how many weeks was the production level below 11,175? Above 11,844?

problem 3)(a) Two events, A and B are statistically dependent. If

P(A)=0.39, P(B)=0.21, and P(A or B)=0.47

Determine the probability that:

i) Neither A nor B will occur

ii) Both A and B will occur

iii) B will occur, given that A has occurred

iv) A will occur, given that B has occurred.

(b) Given that

P(A)=3/14,    P(B)=1/6, P(C)=1/3,    P(AC)=1/7, and P(B/C)=5/21

Determine the following probabilities: P(A/C), P(C/A), P(BC) and P(C/B)

problem 4) The pressroom supervisor for daily newspaper is being pressured to find ways to print paper closer to distribution time, thus giving the editorial staff more margin for last-minutes changes. She has the option of running the presses at normal speed or at 110 percent of normal “Fast” speed. She estimates that they will run at the higher speed 60 percent of the time. The roll of paper (the newsprint “web”) is twice as likely to tear at the higher speed, which would mean temporarily stopping the presses.

(a) If the web on a randomly selected printing run has a probability of 0.112 of tearing, find the probability that the web will not tear at normal speed?

(b) If the probability of tearing on fast speed is 0.20, find the probability that a randomly selected torn web occurred on normal speed?

problem 5) A company is considering upgrading its computer system, and a main portion of the upgrade is a new operating system. The company has asked the engineer for an evaluation of the operating system. Assume the probability of a favorable evaluation is 0.65. If the probability the company will upgrade its system given a favourable evaluation is 0.85. Find the probability that the company will upgrade and receive favourable evaluation?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M95891

Have any Question? 


Related Questions in Statistics and Probability

How might one relate einsteins theory of relativity to

How might one relate Einstein's theory of relativity to mathematical perspective in art?

What is the difference between simple linear and multiple

What is the difference between simple linear and multiple regressions? Give an example of a situation where linear regression might be useful? Give an example of a situation where multiple regression might be useful?

Assignment- probability1a credit card company decides to

Assignment- Probability 1. A credit card company decides to study the frequency with which its cardholders charge for items from a certain chain of retail stores. The data values collected in the study appear to be norma ...

These are pretty similarthe population standard deviation

These are pretty similar: The population standard deviation of the number of people who shop online is 3.1. If you want to be 99% confident that the sample mean is within 2% of the population mean, how many people must b ...

Please read below i need help right away i have posed this

Please read below. I need help right away. I have posed this problem in three different ways an the only consistant answer I get is instructing me to go pay money to another site. PLEASE HELP! Inferential Research and St ...

Do men and women select different breakfasts the breakfasts

Do men and women select different breakfasts? The breakfasts ordered by randomly selected men and women at a popular breakfast place is shown inTable 11.55. Conduct a test for homogeneity at a 5% level of significance. F ...

Assume the sweatshirt test scores are normally distributed

Assume the sweatshirt test scores are normally distributed with a mean of 500 and a standard deviation of 100. (a) Consider all random samples of 100 test scores. What is the standard deviation of the sample means? (b) W ...

Assignmentsuppose that there are two candidates ie jones

Assignment Suppose that there are two candidates (i.e., Jones and Johns) in the upcoming presidential election. Sara notes that she has discussed the presidential election candidates with 15 friends, and 10 said that the ...

Describe secretary of state john quincy adamss address to

Describe Secretary of State John Quincy Adams's Address to Congress, July 4, 1821. As a statement of American Foreign Policy, what does it assert? Do you think it accurately reflects American Foreign Policy up to that ti ...

Imagine that you have collected the following set of iq

Imagine that you have collected the following set of IQ scores: 110 124 100 125 104 119 98 130 76 95 143 90 132 102 125 96 99 78 100 80 112 112 103 88 94 108 88 132 87 119 109 104 104 100 119 99 135 128 92 110 90 92 120 ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro