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Suppose there is a quiz with 8 multiple choice questions. Each question has five possible answers: A, B, C, D, or E. The probability of a student getting the answer correct when randomly guessing is p = 0.20. Assume the number of correct answers follows a binomial distribution.
Find the probability that the number of correct answers is exactly 4.
Round your answer to 3 decimal places.
Provide an appropriate statistical description and summary of this data set; comment on any distinctive characteristics and postulate potential explanations for your observation.
a) What is the probability that he has a pair of matching socks? b) What is the probability that he has a pair of black socks?
Construct appropriate control charts for before and after introduction of the new pathway. Discuss process stability and the results.
They decide to sample some fast-food restaurants currently operating to estimate the monthly cost of electricity. They want to be 90% confident of their results and want the error of the interval estimate to be no more than $100.
To test the comparative brightness of two red dyes, nine samples of cloth were taken from a production line and each sample was divided into two pieces. One of the two pieces in each sample was randomly chosen and red dye 1 applied; red dye 2 was ..
Test Scores: mean=100 variance = 225 Years of Service: mean=5 variance = 81 Of test scores and years of service, which measure has the greater dispersion?
manganese has a density of 7.44 gcm3. given that the activation energy for vacancy formation is 1.1 evatom calculate
Construct a 95% confidence interval for the population mean, based on the numbers 1, 2, 3, 4, 5, 6, and 20. Change the number 20 to 7 and recalculate.
Fuel Consumption and Cars Biodiesel fuel has a cloud point, the temperature at which the fuel becomes cloudy, of approximately 13°C.
a large corporation knows that the proportion of their employees that have children is 0.67. the director of human
If there are 70 people in the class, what is the probability that I win the bet?
An analysis of the age-at-death numbers in this problem produces conclusions like those reached by Coren and Halpern.- Identify the design using R × C notation.- Name the independent variables, their levels, and the dependent variable.
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