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The digital music players produced by a large Canadian manufacturer during the first two months of 2010 were of poor quality. A random sample of 100 players was obtained during this time and the players were tested. It was determined that 25 of them were defective. As a result, quality control standards were then tightened. A random sample of 100 players was taken during the next two months, 11 of which were defective. Is there sufficient evidence to indicate that the new quality control standards were effective in reducing the proportion of defective digital music players? To answer this question, conduct a hypothesis test at the 5% level of significance.
why would you use the tukey-kramer procedure?to test for normalityto test for homogeneity of varianceto test for
the question two distinct integers are chosen at random and without replacement from the first six positive integers.
In a "torture test" a light switch is turned on and off until it fails. If the probability is 0.001 that the switch will fail any time it is turned on or off, what is the probability that the switch will not fail during the first 800 times that it..
a producer of a cartain type of electronic component ships to suppliers in lots of twenty. suppose that 60 of all such
Report the numbers you would need to enter into Stat Crunch as shown in the figure.
Problem 2: Construct a scatter plot of the following data using Minitab:
Selecting a sample of 50 one bedroom apartments in this town and getting a sample mean of less then $530 if the population standard deviation is $100?
The standard deviation of a list of numbers is a measure of how much the numbers deviate from the averag
the mean weight of loads of rock is 43.0 tons with a standard deviation of 8.0 tons. if 9 loads are chosen at random
Who, what, and why for the statistics class data. Answer the who, what, and why questions for the statistics class data set.
What constitutional issues are involved in the scenario that dictates what you can and cannot do related to the evidence of other criminal activity
Using what you know about t-scores, identify which of the variables have a significant influence on the LISTPRICE. At a level of 1% which variables are significant?
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