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In a recent survey of 200 Art students, 163 of them indicated that they would rather be poked in the eye with a sharp stick rather than take a statistics class. At a significance level of 0.01, test
What would be the probability of the team winning 8 straight championship, beginning in 1959 to 2014? What would be the probability of the team winning the title 10 out of 11 years, starting in 1959?
Two students are playing chess to see if they are equal in ability. The rules are that seven games will be played, not counting "draws" as games. If either person wins at least six of the games, the
Bar Code 39 Code 39 is a common bar code system that consists of narrow and wide bars(black) separated by either wide or narrow spaces (white). Each character contains nine elements(five bars and fo
Let X denote the number of transmission errors per 128-bit message sent. Is X geometric? If not, what geometric property fails?
Based on available information, lead time demand for CD-ROM drives averages 250 units (normally distributed), with a standard deviation of 25 drives. Management want s a 98% service level.
What is the probability the test will be positive if administered randomly from the population. Suppose the test is used to screen applicants for insurance. The test is positive. What is the probabil
40% of candidates come from School X, 40 % from SChool Y and 20% from School Z. Given that a candidate passed the exam what is the probability that they are from school Z?
The appropriate t-value to use when constructing a 95% confidence interval for a sample size of 12 is?
Calculate the standard error. Find the corresponding z-value to use for a proportion with a 95% confidence level. Construct the 95% confidence interval for the proportion of households represented i
Calculate the standard error? Find the t-value corresponding to a sample size of 9. (Hint: Either use a t-table or Tools -> Statistical Tables in Gretl. The d.f. = 8 and the right-tail probabilit
Find the discharge with an annual exceedance probability of 0.02. Find the annual exceedance probability of the 1972 flood.
Suppose on the upcoming weekend there is a 50% chance of rain on Saturday and a 40% chance on Sunday. Furthermore, suppose that a rainy day is followed by another rainy day with probability 0.75. Wh
An aircraft landing gear has a probability of 10-5 per landing of being damaged from excessive impact. Assuming a landing per day, what is the maximum number of years for which one can give at least
Calculate the battery failure probability under normal operating conditions. Calculate the conditional probability that the battery will fail, given that the other has failed.
We are aware that some states, cities, and counties have begun to take advantage of the cloud computing model for more administrative functions such as e-mail, but the adoption of cloud technologies
A box of 1000 stuffed dinosaurs contains 100 that are missing their tails (Oh No!). Two dinos are drawn at random and checked to see if they have a tail. Let A be the event that the first dino drawn
Three points are chosen at random on a circle of unit circumfrence. What is the probability that the triangle defined by these points as vertices has three acute angles?
Obtain the linear correlation coefficient for the data. Round your answer to three decimal places. The data below show the temperature (x) and the amount a plant grew (y), in millimeters, for each o
A regression equation is obtained for a set of data points. It is found that the total sum of squares is 28.422, the regression sum of squares is 16.090, and the error sum of squares is 12.332.
A recent national study about the effectiveness of Echinacea in cold treatments was performed by a medical school in Kansas City. The results stated that 22.5% of the randomly chosen 250 adult subje
If 1 of the 70 company stores is randomly selected, what is the probability that that store does not violate the institute scanner accuracy standard?
Consider the type of balance (digital or not) purchased by each of five pharmacists. Suppose the probability that at most one of the pharmacists purchases a digital balance is 0.089. What is the prob
The metal body for a spark plug is made by a combination of cold extrusion and machining. The occurrence of surface cracking following the extrusion process has been shown by Pareto diagrams to be