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A soda-filling machine is intended to dispense 12 ounces of product per can. The actual machine performance has mean value of 12.4 ounces with standard deviation of 0.2 ounces. Based on this informa
They found 198 orange candies, 155 brown candies, and 147 yellow candies. Carry out the appropriate test by stating the hypotheses, computing the test statistic and p-value, and indicating what deci
Sawaya Company had depreciation and amortization expenses of $522,311, interest expenses of $114,077, and an EBITDA of $1,521,087 for the year ended June 30, 2010. What is the Times Interest Earned
What is the formula used to calculate 99.7% interval of a bell shaped curve graph?
In 400 trials, Hairballi hit the sage area on rotating human target 90% of the time. Suppose that Dr. Maaaavelous would like to obtain a 95% CI for p with marginal error E=0.02.
An experiment is given together with an event. Determine the (modeled) probability of each event, supposing that the coins (or dice) are distinguishable and fair, and that what is observed are the f
Compute the probability distribution function of X, i.e. the function Px (x).
What would happen to the shape and height of the peak of the normal bell shaped curve if the standard deviation increased?
Assume that on 100 point test , the professors goal is for her students to have exam score variance of less that 100 points. A recent sample of 22 exams has a sample standard deviation of 12.1. Tes
Of those with RPN, 4 do graphing and 3 are programmable. Only one calculator has all three features; 2 calculators are just basic four-bangers with none of the special features. How many programmabl
A campus Goldfish Swallowing club selects its officers (Treasurer, Aquariumist) completely at random, by lot. The club has 12 members. including Alfred and Bart. Determine the probability that eith
A regression equation was constructed relating the time spent studying for an exam (X) and the score received on the first exam (Y) for 25 students in a calculus course. The y-intercept was found to
A regression equation was constructed relating time spent studying for an exam (X) and the score received on the first exam (Y) for 25 students in a calculus course.
In a certain factory, three machines, B1 , B2, and B3 make 30%, 45% and 25% respectively of products manufacted. It is known that 8% of items from machine 1 are defective, 4% of the items from machi
You are given some information regarding a sample of data. It is known that sample variance for this set of data is 10. You're also told that the sum of the squared deviations from the sample mean i
It is known that for Freshman at a certain university, 68% are taking a math class, 54% are taking history class, and 35% are taking both courses. Determine the probability that a randomly selected
We choose a person at random and learn that her system was infected by the virus. What is the probability that she is a Windows user?
A box contains 10 two-inch screws, of which 4 have Phillips head and 6 have regular head. Assume that you choose three screws randomly from the box. Determine the probability that there will be more
A recent headline announced that the mountain biking might affect fertility in men. The article was based upon a study that found that 14% of avid mountain bikers in the study had low sperm counts,
Determine the probability of obtaining colors in the following order: red, yellow,red,yellow, yellow, yellow? What is the probability of obtaining 2 red and four yellow, in any order?
A test set has a 99% probability of correctly detecting system fault and a 2% probability of declaring a false alarm (i.e., a fault that is declared is a mistake).
A salvo of missiles are to be fired at target. Each missile is identical, and each has probability of 0.63 of destroying the target by itself. How many missiles should be fired in the salvo in order
The U.S Air Force needs that pilots have weights between 64in and 77in. Find the % of women meeting te height requirements?
Thirty samples of cheddar cheese were examined for their content of acetic acid, hydrogen sulfide and lactic acid. Each sample was tased and scored by panel of judges and the average taste score pro
Three people get in an empty elevator at the first floor of building that has 10 floors. Each presses the button for their desired floor (unless one of the others has already pressed that button).