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Of the items produced daily by a factory, 40% come from line I and 60% from line II. Line I has a defect rate of 8%, whereas line II has a defect rate of 10%. If an item is chosen at random from the day's production, find the probability that it will not be defective.
In a normal population with sigma=20, a random sample of size n gave X(mean)=56.53. At the 5% significance level, make a two-tailed test of the null hypothesis mu=50, when (a) n=24 (b) n=36
Except that their bed production plant is set up to produce beds in 100 bed lots. How many beds should they produce each week to minimize total four week inventory cost?
A produce manager wants to estimate the mean size of coke bottle fills with 95 percent confidence. A preliminary sample of 12 bottles shows a sample standard deviation of 3 mil, and mean of 500.
By using 0.05 level of significance, is there any evidence of difference in mean life of bulbs produced by two kinds of machines?Calculate p-value and interpret its meaning.
The table below gives the loan requests (in thousands of dollars) for the past 12 months. Would you say that the local business economy is heating up or cooling down? Explain your answer. Graph the data.
Vehicle speeds at a certain highway location are believed to be approximately normally distributed with a mean of 60 mph and standard deviation of 6 mph. For each of the following questions, fill in the blank with the appropriate speeds. Apply the..
the hawks are currently winning 0.55 of their games. there are 5 games in the next two weeks. what is the probability
assuming ship berthing follows a poisson distribution at jaxport. if a fuel spill occurs for 5 of all berthings. what
a candy maker produces mints that have label weight of 20 grams on each box. assume that the weight of a box of mints
Find the t c for a 90% confidence level with a sample size of 18.
find the weighted mean for three exams if the first one was worth 20 and the student received a 80 the second was
Selecting a European Distribution Center Site for American International Automotive Industries
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