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In a rural area, the infection rate of certain disease is 0.15. A sample of 25 people is taken from the area - selections are independent. Define X as the number of people in the sample who are infected by the diease. What is the distribution of X and what are the parameter values of this distribution?
Ccompute a t-test comparing males' and females' heights. You must determine which type of t-test to compute. Write a short interpretation of the results.
An airline has a policy of booking as many as 17 persons on an airplane that can seat only 16. Find the probability that if the airline books 17 people, not enough seats will be available.
Write introduction to STATISTICAL PROCESS CONTROL and Explain the use of SPC tools used at D2D
Solve the problem: According to police sources a car with a certain protection system will be recovered 94% of the time. Find the probability that 4 of 8 stolen cars will be recovered.
Scrap rates per thousand (parts whose defects cannot be reworked) are compared for 5 randomly selected days at three plants. Does the data prove a significant difference in mean scrap rates?
As a quality engineer working on the Rangdo production line, you have determined that the probability of producing a defective part is 6%.
An independent-measures research study was used to compare two treatment conditions with n = 4 participants in each treatment. The first treatment had a mean of M = 58 with a variance of s^2 = 28, and the second treatment had M = 52 with s^2 = 36.
What is the probability of flipping a coin 6 times and getting 4 or more heads?
At the .01 significance level, is there a difference in the use of the four entrances?
Machine X test unit cost $3000 with beta=3 and theta=500, Machine Y test unit cost $2000 with beta=3 and theta=400. If the machines oil fixtures has life of 20 hrs, which machine goes to market first?
A rectangular garden has dimensions of 25 feet by 19 feet . A gravel path of equal width is to be built around the garden. How wide can the path be if there is enough gravel for 672 square feet?
Suppose the annual return on XYZ stock follows a normal distribution with mean 0.12 and standard deviation 0.30.
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