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A manufacturer of boxes of candy is concerned about the proportion of imperfect boxes - those containing cracked, broken or otherwise damaged candies.
(a) How large a sample is needed to be 99% confident that the difference between the sample fraction of imperfect boxes and the population proportion of imperfect boxes is no more than .015? Assume here that we have absolutely no information concerning the true population of imperfect boxes.
(b) How does your answer to part (a) change if we assume that the population proportion of imperfect boxes is at least .005 and no more than .1?
She decides to study the effect of each catalyst on each material for 5 days (1, 2, 3, 4, 5). Construct a Latin square design for this experiment.
smith travel research provides information on the one-night cost of hotel rooms throughout the united states usa today
you work for an auto company. each car produced is expected to have no more than4 defects fit and finish tolerances
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A small business performs a service and then bills its customers. From past experience, 90% of the customers pay their bills within a week.
Prediction interval for the regression line - Using the age and sick days data from table below, find the 98% prediction interval when x = 47 years.
Before you run your scatter diagram answer the following: What do you think you will find? Bigger fields have more seats? Smaller fields have more seats? No relationship exists between field size and number of seats? A strong relationship exists betw..
Using α = 0.05, does this sample provide enough evidence to conclude that the average utility bill in Delaware was lower in the winter of 2011-2012 than it was in the winter of 2010-2011?
The following stem-leaf plot displays the average annual snowfall amounts (in cm, with the stems being tens and leaves being ones) for a random sample of 25 Chinese cities: 0|000000024 1|028 2|00228 3|8 4|2248 5|48 6|0 ----- *10
Is there any evidence to suggest that the variance is different before and after the new meters were installed? Justify your answer.
1.a statistics instructor wants to know which route will get her to school the fastest. each day from october 2 to
What is the probability that both cards dealt are aces or 10-point cards? What is the probability that both of the cards are aces?
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