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A manufacturing firm has collected information on the number of defects produced each day for the past 50 days. The data have been described by the accompanying Minitab box-and-whisker plot.
a. What is the approximate value of the median? The first and third quartiles?
b. What do the asterisks (*) at the right of the display indicate? What implications might they have for the production supervisor?
c. Does the distribution appear to be symmetric? If not, is it positively skewed or negatively skewed?
The design tolerance thickness for an automotive part is 55 mm to 65 mm. If the process mean thickness is 61 with a standard deviation of 2.3 mm, then what percentage of the sheets will be acceptable? (i.e. What percentage will fall within the des..
Describe whether the data appear to be approximately normally distrusted by .. a. Comparing data characteristics to theoretical properties.
Given Figure showed 95 percent confidence intervals for N = 25. Imagine a graphic with confidence intervals based on N = 100.- How many of the 20 intervals are expected to capture μ?
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Identify the regression equation and make the prediction. Show your procedure, or explain how you reached your answer. Costs of Television: Find the best predicted quality score of a Hitachi television with a price of $1900. Is the predicted qualit..
A standard 6-sided die is weighted so that the probabilities of rolling 2,3,4,5 or 6 are equal and the probability of rolling 1 is three times the probability of rolling 2. If the die is thrown twice, what is the probability that the sum of the nu..
assuming that both population s are normally distributed construct a 95 confidence interval about micro1 - micro2 .
if the population standard deviation of the lifetime of washing machines is estimated to be 900 hours how large a
At the end of class, our teacher said "If you're perceptive, you may have noticed that a regression analysis produced by the Excel Data Analysis ToolPak contains an ANOVA table.
What is the best predicted test score for a student who spent 7 hours preparing for the test? Find the standard error . Use formula or MS Excel.
calls to a customer service center last on average 2.4 minutes with a standard deviation of 1.5 minutes. an operator in
Use a significance level to test the claim that the mean weight loss is greater than 0. Based on these results does the diet appear to be effective. Does the diet appear to have practical significance.
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