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An Olymipic archer is able to hit the bull's-eye 80% of the time. Assume each shot is independent of the others. If she shoots 6 arrows, what's the probability of each result described below.
a. Her first bull's-eye comes on the third arrow.b. She misses the bull's-eye at least once.c. Her first bull's-eye comes on the fourth or fifth arrow.d. She gets exactly 4 bull's-eyese. She gets at least 4 bull's-eyesf. She gets at most 4 bull's0-eyes
The average weight of adult men is 172 pounds with a standard deviation of 29 pounds. 30 men were asked their weight and the mean was calculated to be 181, test the hypothesis that the mean is not 172 pounds using alpha = .05.
Give a probability distribution for the following: In 1992, the Big 10 collegiate sports conference moved to have women compose at least 40% of its athletes within 5 years.
Sugar packaged by a certain machine has a mean weight of 5lb and a standard deviation of 0.02 lb. For what values of c can the manufacturer of the machinery claim that the sugar packaged by this machine has a weight between 5 - c and 5 + c lb with..
Would you agree with this claim if the random sample showed an average of 23,500 km and a standard deviation of 3,900 km? Use 0.01 level of significance.
A meat processing plant has processed an average of 100 tons per day for the last several years. Newer processing machines have been installed recently.
4th graders in the US take a standardized test for math. The national average score is 237. Did your state, as represented by your students, out perform the national average using a statistically significant measure?
Which is the probability of that the median of the sample or average medians be between 320 and 350 minutes?
Examine the two standard deviations. What do these indicate about the range of benefits enjoyed by the two groups?
Compare the effectiveness of three methods of teaching (IV). You plan to administer a standardized test (DV measured on an interval scale measuring knowledge acquisition) to the students in three classes with each class using a different teaching ..
Is this statistically significant evidence that candidate has sufficient valid signatures overall? Describe.
Arbitrarily choose someone from sample. Determine the probability that they are Jewish and Democrat?
Finding the probability of sample and describe the sampling distribution of the sample means.
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