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A quality control engineer at a potato chip company tests the bag-filling machine by weighing bags of potato chips. Not every bag contains exactly the same weight. But if more than 15% of bags are overfilled, then they stop production to fix the machine.
They define overfilled to be more than 1 ounce above the weight on the package. The engineer weighs 100 bags and finds that 21 of them are overfilled.
He plans to test the hypotheses: H0: p = 0.15 versus Ha: p > 0.15 (where p is the true proportion of overfilled bags).
What is the test statistic?
The analysis using critical values and confirm
a. What is the probability that sales will be less than 80,000 packages?
A population proportion is to be estimated. Estimated the minimum sample size needed to achieve a margin of error E=0.01 with a 95% degree of confidence.
amount of time spent studying each day for local and overseas students aspire llp is a recruitment agency. recently
The warranty period must be long enough to make the purchase attractive to the buyer. For a new HDTV the mean number of months until repairs are needed is 36.84 with a standard deviation of 3.34 months. Where should the warranty limits be set ..
Compute the single-sample z-test to see if caffeine reduces dreamtime. Test the null hypothesis at the .05 level of significance.
Customers arrive at an automated coffee vending machine at a rate of 3 per minute, following a Poisson distribution. The coffee machine dispenses a cup of coffee in exactly 15 seconds.a. What is the average number of people waiting in line?
Develop a scatter diagram for these data. Try to approximate the relationship between x and y by drawing a straight line through the data.
1. Compute C10,5, P8, 4, C8, 4. P9,6 2. A sales representative must visit seven cities. There are direct air connections between each of the cities. Use the multiplication rule of counting to determine the number of different choices the sales repres..
if you were constructing a 99% confidence interval of the population mean based on a sample of n= 20 where the standard deviation of the sample s= 0.05 the critical value of t will be
One way to find probabilities from a Standard Normal Distribution is to use probability tables, which are located inside the front cover of your textbook.According to the table, what is the probability when z ≤ -1.75? The probability when z ≤ 1.75?
Work up a simulation model to examine the uncertainty for five different investment projects. p1 = 0.5, p2 = 0.35, p3 = 0.65, p4 = 0.58, p5 = 0.45. The outcomes of the projects should be viewed as independent since the projects are run by di..
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