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Dick hits a bull's eye 90% of the time and sally hits a bull's eye 95% of the time. What is the probability that either one or both will hit the bull's eye if each takes one shot? What is the probability that dick ans sally will both hit the bull's eye?
She selected a random sample of 50 students from each of the four dormitories. What is the null hypothesis for this situation?
There were 1000 more students at the soccer game than nonstudents. Student tickets were $8.50 and nonstudents were $13.25. If the total revenue for the game was $75,925, then how many tickets of each type were sold?
Smaller the p-value in test of hypothesis, the more important the results are.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop. (b) Check the normality assumption. (c) Try the Very Quick Rule.
Research has shown that losing even one night's sleep can have a significant effect on performance of complex tasks such as problem solving ( Linde & Bergstroem, 1992).
During recent seasons, Major League Baseball has been criticized for the length of the games. A report indicated that the average game lasts 3 hours and 30 minutes.
Find the test statistic P-value, and critical value, and state the final conclusion.
Given the following raw scores, calculate the following values: Range, Variance and Standard Deviation, show your calculations: Scores: 9, 7, 8, 4, 8, 8,7, 8, 9, 6, 3
Find the most appropriate statistical procedure: Teacher of low-level reading group interested in average score for group of 25 students?
An oil co. is drilling some wells. the results are described as either a dry well or a producer well. Past experience suggests that 10% of exploratory wells are producer wells.
A new product has the following profit projections, associated probabilities, and indifference probability:
Compare the vital capacityfor the two groups.calculate a 99% confidence interval for the difference.the result of this comparison may be misleading.why?
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