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Out of a total of 120 musicians in a club, 5% can play all the three instruments- Guitar, violin and Flute. It so happens that the number of musicians who can play any two and only two of the above instruments is 30. The number of musicians who can play the guitar alone is 40. What is the total number of those who can play violin alone or flute alone ?
A) 30
B) 38
C) 44
D) 45
The participants in a television quiz show are picked from a large pool of applicants with approximately 60% men and 40% women. X is a random variable that gives the number of females chosen when ten participants are picked randomly.
More than 5 percentage points in either direction from what would have been got by interviewing all voters in United States." Determine sample size suggested by this statement.
In a random sample of 328 florida public school employees, 231 were female. write a 95% confidence interval for the proportion of the population of florida public school employees that are female.
assimilation and identitythis assignment grants you the opportunity to enter into the ongoing debate regarding the
Use Excel and determine the number of each type of person that will be needed to complete the job within the allotted time and at minimum cost.
A normal distributed population has a mean of 250 pounds and a standard deviation of 10 pounds. Given n = 20, what is the probability that this sample will have a mean value between 245 and 255 pounds?
Consider randomly selecting a student at a certain university, and let A denote the event that the selected individual has a Visa credit card and B be the analogous event for a MasterCard. Suppose that P(A) = .5, P(B) = .4, and P(A intersect B..
The student is studying education, is 0.8. What is the conditional probability that the student is studying education, given that she is a woman?
Assume that two samples are independent simple random samples selected from normally distributed populations. Use a 0.05 significance level to test the claim that male and female biology students speak the same mean number of words in a day.
A sample of 420 families revealed the following. At the 0.05 significance level, is there a difference in the proportion of customers that prefer each day of the week?
What is the value of the slope of the least squares regression line for these data? Round your answer to at least four decimal places.
How many jackets should the store owner order if she wants to maximize her expected profit?
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