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A multiple choice test consists of 5 questions each with 4 possible answers. What is the probability that a student will
A) Guess them all wrong
B) Guess at least 4 correct
C) Guess less than 3 correct
Statistics and Probability, Statistics
Acme Airlines flies airplanes that seat 20 passengers. From experience, they have learned that, on average, 85% of the passengers holding reservations for a particular flight actually show up for the flight. If they book ...
A study was conducted concerning the use of glvoes among the nurses with 15 years or more experience. The study showed that only 1/6 of these nurses wear gloves during vascular access procedures. For a sample n=36 nurses ...
Consider random samples of size 800 from a population with proportion 0.60. (a) Find the mean and standard error of the distribution of sample proportions. Round your answer for the mean to two decimal places, and your ...
(i) Define the parameter of interest in the context of the problem (ii) State the alternative hypothesis. (iii) State the distribution used to calculate the P-value (not the formula, but the distribution, eg. t distribut ...
The mean of the annual return for common stocks from 1926 to 1992 was 16.5%, and the standard deviation of the annual return was 19%. In later parts of the question we will ask: a. What is the probability that the stock ...
Hardboard is graded with the following frequencies: Grade A: 1/5 Grade B: 3/4 Cull: 1/20 If six pieces come off of a hot press, find the probability that two are Grade A, three are Grade B, and one is a Cull.
Let Timco use a capital structure that is 35% debt and 65% equity, The firm can borrow at 6%. The tax rate is 40%. Let the firm beta be 1.9, the market return 14%, and the risk free rate 2%. Find the WACC.
A study of cancer was conducted among 10,000 men in the United States who were 40-75 years of age. Every two years questionnaires are sent to these individuals, and newly diagnosed cases of various cancers were reported. ...
One sample has n = 8 and SS = 21 and a second sample has n = 8 and SS = 35. What is the pooled variance for the two samples?
According to national data, about 14% of American college students earn a graduate degree. Using this estimate, what is the probability that exactly 24 undergraduates in a random sample of 200 students will earn a colleg ...
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