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According to the Law School Admission Council, in the fall of 2006, 63% of law school applicants were accepted to some law school. The training program Satisfaction claims that 163 of the 240 students trained in 2006 were admitted to law school. You can safely consider these trainees to be representative of the population of law school applicants. Has LSATisfaction demonstrated a real improvement over the national average?
What is the test statistic?
A) z= -1.58
B) z = 1.63
C) z = 1.58
D) z = -1.63
Using a level of significance of .10, is there evidence that the population mean weight of the candy bars is greater than 7.3? Explain.
Find the probability that a randomly selected man will be shorter than 78.1 inches. Don't forget the diagrams for (b) and (c).
Compute the following: (Round the value for standard deviation and intermediate calculations to 2 decimal places and your final answer to 4 decimal places.)
the mean height of 8 year old girls in my daughters school is 125 cm with a standard deviation of 0.3 and the height
Using the 0.10 level of significance, is there evidence that the mean shopping time at the local supermarket is greater than the claimed value of 22 minutes?
Alexa got 144 on her test which has a mean of 128 and a standard deviation of 34. What is her z-score?How do you calculate the z score for the raw score of 10 based on the following distribution: 8, 9, 15, 30, 7, 8 ?
We want to estimate the population mean within 5, with a 99 percent level of confidence. The population standard deviation is estimated to be 15. How large a sample is required?
What is the necessary sample size
A certain disease occurs in 35% of the population. A test for the disease is fairly accurate: it misclassifies people with the disease as healthy 6% of the time and reports that a healthy person is diseased just 7% of the time.
a light fixture contains 2 light bulbs. the lifetime xi of each bulb is exponentially distributed with a mean of 200
determine the t critical value for a two-sided confidence interval in each of the following situations. round your
At the .05 level, you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. Is this a 1 or 2 tail test?
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