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The average wage of a construction worker is $11.76 with a standard deviation of $2.72. Assume normally distributed.
A) What is the probability that a randomly selected worker makes more than $12.55
B) What is the probablity that a randomly selected worker makes less than $8.00
A professor obtains SAT scores and freshman grade point averages (GPAs) for a group of n=15 college students. The SAT scores have a mean of M=580 with SS=22,400, and the GPAs have a mean of 3.10 with SS=1.26, and SP=84.
A trucking firm suspects that the mean lifetime of a certain tire it uses is less than 35000 miles. To check the claim the firm randomly selects and test 54 of these tires and gets a mean lifetime of 34,570
What is the probability that more than 200 cars will require service work in a particular month?
The assembly time for a product is uniformly distributed between 6 to 10 minutes. The probability of assembling the product between 7 to 9 minutes is
Analyze how the level of measurement and the distribution of the data influenced the type of graphical descriptions presented.
a triathlon consisting of swimming cycling and running is one of the more strenuous amateur sporting events. an article
Assume that the significance level is a= 0.1. Use the given information to find the p-value and the critical value (s). With H1: p = with line through it 1/2 the test statistic is z= - 1.35
let a be the set of english words that contain the letter x and let b be the set of english words that contain the
the speed of automobiles on i-20 west of fortworth texas is being investigating by the texas department of public
The reinvestment rate for these funds is 3 percent. Anderson uses an 13 percent required return on this project. what is the NPV?
Suppose a population can be approximated by a normal model with expected value μ = 50 and standard deviation σ = 9.8. Find the probability that a random sample of size 4 has a mean x between 47.8 and 53.7.
assume there is a rope with the length of 10 feet alexa will cut it anywhere along the ropes length with equal
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