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An automatic machine that fills bags of unpopped popcorn is operating properly if the weights are independently and normally distributed with a mean of 113 grams and a standard deviation of 5.4 grams. Find the probability that if 7 bags are randomly selected, their mean weight exceeds 114 grams.
After performing a two sample t-test, you see a p-value of 0.0355. Of the following, which is the appropriate conclusion?
You are asked to estimate the chance that the sum will be positive. Can you do it if you are also told the average and SD of the numbers in the box, but are not told the numbers themselves?
What would that evaluation be and what is the margin of error?
The International Agricultural Producers publishes annual data on various selected farm products. Shown above are the unit productions figures.
What is the null hypothesis in a chi-squared test of independence? List the assumptions under which the linear regression model is supposed to work.
If the answer choices for each question are equally likely, find the probability of answering more than 4 questions correctly.
How Large a sample is needed to estimate the true proportion of homeowners who have vegetable gardens to within 3 percentage point 92% confidence.
If you randomly select ten m&m's, what is the probability that exactly three of them are green?
The I.R.S. did an audit and found that the deposits usually come in at $1,000 on a daily basis. What is the confidence interval.
If a particular shipment of thousands of components actually has a 6 percent rate of defects, what is the probability that this whole shipment will be accepted?
Determine the best replacement policy over the next five years?
Data are recorded on effects of each drug. Is research division by using dependent or independent samples? Explain why?
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