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Q1) According to Information Almanac. 80% of adult smokers started smoking before turning 18 years of age. Assume 10 smokers, 18 years of age or older are arbitrarily chosen and number of smokers who started smoking before 18 is recorded.
i) Determine the probability that exactly 8 of them started smoking before 18 years of age.
ii) Determine the probability that at least 8 of them started smoking before 18 years of age.
iii) Determine the area under the standard normal curve that lies between z=-2.55 and 2.55
iv) Determine the Z score such that the area under standard normal curve to the left is 0.85
v) Determine the probability P (Z<-0.61).
Sketch the appropriate distribution, and locate the critical region for a = 0.05.
Find the probability of a type I error α if the true proportion is p=0.6.
What is the 90% confidence interval estimate of the difference between two population means.
Sample size of only 20. Find out a 95% confidence level for population Cp.
If a student guesses on each question, what is the probability that the student will pass the test?
Labor negotiations estimate that 30 percent of all major contract negotiations result in a strike. During the next year, 12 major contracts must be negotiated. Determine the following probabilities.
Solution utilizing graphical method. Compute the following linear programming problem. Among which of the following points (X, Y) is not a feasible corner point.
By using the fact that Martha believes the treatment will decrease the amount of time to fall asleep, describe the null and alternate hypotheses.
Three scholarships are available for students. Their values are: $2,000, $2,400, $3,000. Twelve students have applied and no student may receive more than one scholarship. Assume all twelve students are in needs of the funds, how many different..
Tavern has budget of $2,000 for beer for Super Bowl Sunday. Betty desires to find out number of gallons of each brand of beer to order so as to maximize profit. Create a linear programming model for this problem.
It is known that 60 percent of all registered voters in the 42nd congressional District are Republicans. There registered voters are selected at random from the district. Compute the probability that exactly 2 of the 3 selected are Republicans, u..
By using standard normal table, determine critical value (or values) for= 0.14 right-tailed test.
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