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Suppose the length of time a person takes to use an ATM machine is normally distributed with mean μ = 100 seconds and standard deviation σ = 10 seconds. There are n = 4 people ahead of Jackson in a line of people waiting to use the machine. He is concerned about T = total time the four people will take to use the machine.
a. What is the mean value of T = total time for the four people ahead of Jackson?
b. Assuming that the times for the four people are independent of each other, determine the standard deviation of T.
The topic chosen must relate to a topic discussed in the assigned reading material, but also take a holistic view in that you should integrate knowledge of the concepts that you learned throughout the course. Research relevant to the aviation and ..
a suppose a family has three children and you are told that at least one of them is a girl. what is the probability
1. Develop the correlation matrix showing the correlation between all possible pairs of variables. Test statistically to determine which independent variables are significantly correlated with the dependent variable, book sales. Use a significance..
gerald needs to purchase baseballs and bats for his youth baseball league. he will need at least 25 pieces of equipment
Exam: 250711RR- What is the standard deviation for the data values? Which of the following involves inferential statistics as opposed to descriptive statistics?
Many psychologists believe that birth order and personality are related. To study this hypothesis, 400 elementary school children were randomly selected and then given a test to measure confidence. What is the probability that the student is a firs..
What is the area between the mean and 395 pounds? What is the probability of selecting a value at random and discovering that it has a value of less than 395 pounds
Then a second ball is drawn at random from the three ball in the box. what is the probability that the first ball drawn was white, given that at least one to the two balls drawn was white?
Senate should not worry. He polls one legion of 1,000 men and finds that 340 of them are barbarians. What is the test statistic for this hypothesis test?
Find the standard deviation for the defective transistors.
1. In your own words, describe the meaning of thermal expansion in solid state engineering.
What is the most likely monetary outcome of the business venture?- Is the venture likely to be successful?- What is the long-term average earning of business ventures of this kind? Explain.
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