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A p-chart has a lower control limit of .05 and an upper control limit of .07. A newly hired quality control technician made an error by not drawing the prescribed sample size. He drew a random sample of 100. What control limits should be applied to his sample?
a) 0,.0625
b) 0,.0988
c) 0,.1312
d) 0,.1614
e) .0025,.0275
What is the likelihood that none of the selected flights arrived within fifteen minutes of scheduled time?
Find the expected GPA when SAT = 800. Find E (GPA|SAT = 1,400). Comment on the difference.
Suppose the random variable x is best described by a normal distribution with µ = 24 and σ = 2.7. Find the z-score that corresponds to each of the following x values.
Do students tend to improve their SAT Mathematics (SAT-M) score the second time they take the test? A random sample of four students who took the test twice received the following scores
Suppose that an IQ test was given to a large group of persons, the scores are assumed to be from a normally distributed population, that mean = 100 and s (standard deviation) = 15.
Is there a significant difference the four testing conditions?
Consider the following time plot of the values of variable Y for each month of a 60-month period. This plot displays
What is the probability that a cereal would either high calorie or high fiber? In other words, what is P(high calorie or high fiber)?
Give all steps of a test of the hypothesis that the corresponding population proportions are equal.
The margin of error for a 95% confidence interval estimate for the proportion of all students with cell phones is
Which of the following assumptions for inference about a proportion using a confidence interval are violated,
At 0.05 level of significance, is there evidence that proportion of claims processed under this new system is higher than article reported for previous system?
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