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What is the probability two individuals chosen at random from a classroom of 30 students are both females if there are only 5 female students in the classroom.
1. State the null and research hypotheses
Testing for a linear correlation. Construct a scatter plot, find the value of the linear correlation coefficient r, and find the critical values of r from the table below using a=0.05.
a random sample of 81 credit sales in a department store showed an average sale of 68.00. from past data it is known
Assume that the probability for each customer to show up is 92%. (a) What is the probability that someone will be bumped out?
What is the probability that none of three randomly selected persons is allergic to this drug? Assume that all three persons are independent.
u.s. bureau of the census data reveal the largest town in the state of oh has a population of one million families. the
Find the appropriate critical statistic for : A one tailed test in the positive direction with 15 observations with alpha equal to 0.001.
Consider a machine that fills soda bottles. The process has a mean of 15.9 ounces and a standard deviation of 0.06 ounces. The specification limits are set between 15.8 and 16.2 ounces. a) Compute and interpret the machine's Cp
For a sample with n=36, the mean duration of a geyser is 3.55 minutes and the standard deviation is 0.63 mintues. Using chebychev's theory, determine at how many of the eruptions lasted between 2.29 and 4.81 mintues.
Simplify each expression-Perimeter of a rectangle. The perimeter of a rectangular backyard is 6x+6 yards. If the width is x yards, find a binomial that represents the length.
How could your answer in question (a) change if you knew returns followed a skewed distribution instead of a normal distribution? Explain briefly.
A self proclaimed psychic was tested with 100 cards face downand asked to determine what symbol, out of 5 possible symbols the card hado n it. How many would this person need to get right for us to be convinced at the 99% level tha t this person is a..
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