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Worldwide, approximately 70% of smart phones run the Android operating system (A) while 30% run a non-Android operating system (Ac). Suppose 2 smart phones are ran- domly selected (assume independence).
1. Determine the probability that the first runs Android (A1) or the second runs Android (A2).
2. Determine the probability that exactly 1 runs Android.
Use the histogram to determine how many points are out of control according to the upper control limit and lower control limit.
1. The data below are the colors of cars that came through the Starbuck's drive-thru between 9am and 10am on a particular day.
a sample of 40 women is obtained and their heights in inches and pulse rates in beats per minute are measured. the
1. you are interested in testing the distance of two golf balls brand a and brand b. you take a random sample of 100
What is the likelihood of exactly four purchases? How many purchases should she expect? What is the likelihood that four or more "hits" result in a purchase?
Do you believe that the variance of the number of cars sold per month before the announcement is equal to the variance of the number of cars sold per month.
the toylot company makes an electric train with a motor that it claims will draw an average of only 0.8 ampere a under
If test results over long period of time illustrate that 5% of x values are over 2.1 pounds and 5% are under 1.9 pounds, determine mean and standard deviation for population of products produced with this process?
Let X be the mean of a random sample of size n from a distribution that is N(µ, u2), where the positive variance u2 is known. Use the fact that (1)(2) - Cl>( -}) = 0.954 to find, for each µ,
How big of a sample size do you need to generate a 95% confidence interval with a mean of 10,000 miles a year with a margin of error of 100 miles.
Given a partially ordered set (X, ≤), a subset A ⊂ X , and an element x ∈ A, x is called a minimal element of A iff there is no other y ∈ A with y x . Then (X, ≤) will be called min-ordered iff every non-empty subset of it has a minimal e..
If the manufacturer claims that during normal operation hours, the defective rate has never been more than 12%. At the 5% significance level, is there evidence to indicate that the manufacturer's claim is false?
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