Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Many vehicles used in space travel are constructed with redundant systems to protect flight crews and their valuable equipment.
In other words, backup systems are included within many vehicle components so that if one or more systems fail, backup systems will assure the safe operation of the given component and thus the entire vehicle.
For example, consider one particular component of the U.S. space shuttle that has n duplicated systems (i.e., one original system and n - 1 backup systems). Each of these systems functions, independently of the others, with probability 0.98. This shuttle component functions successfully provided that at least one of the n systems functions properly.
a. Find the probability that this shuttle component functions successfully if n = 2.
b. Find the probability that this shuttle component functions successfully if n = 4.
c. What is the minimum number n of duplicated systems that must be incorporated into this shuttle component to ensure at least a 0.9999 probability of successful operation?
Suppose the inspector is unhappy with the previous result and would like to resample. How many rolls should be sampled to estimate the mean tensile strength within 1.5 PSI with 95% confidence?
The estimated age-adjusted percent of persons 18 years of age and over who smoke cigarettes are shown below for females and males for selected years.
What is the power of such a study if a two-sided test is to be used with α = .05? How many people would need to be studied to have 80% power under the assumptions in problem A?
Using the .05 level of significance, what should we conclude about the theory that 24 hours is the natural cycle? That is, does the average cycle length under these conditions differ significantly from 24 hours?
How do research questions frame studies? What type of wording would lead to a qualitative study? A quantitative one?
a fair 4 sided die has the numbers 123 and 4 on its faces. the die is rolled 20 times. the random variable x represents
the mean number of errors per page made by a memebr of the word processing pool for a large company is thought to be
a manufacturer of paper products wants to compare the variation in daily production levels at two paper mills.
The 50 computer mice inspectors at a particular factory can only inspect 34 mice per hour. Does the company have reason to believe that these inspectors are slower than average at α = 0.10?
below are the ages of people arrested on theft charges at a mississippi county jail. for this sample calculate the
At a certain pizza parlor, 45% of the customer's order a pizza containing onions, 38% of the customer's order a pizza containing sausage, and 79% order a pizza containing onions or sausage
of 43 bank customers depositing a check 18 received some cash back. construct a 90 confidence interval for the
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd