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For a resturant survey, a college student, employed by the company, asked the college-aged students in cool clothes walking by their opinion of the salad offerings at the restaurant. Is this an unibiased sample? Give a reason for your conclusion.
When only the value-added time is considered, the time it takes to build a laser printer is thought to be uniformly distributed between 8 and 15 hours.
Which of these variables are discrete and which are continuous random variables?
The null hypothesis is to be tested at 95% confidence. Determine the critical values for this test.
A study is conducted to compare mean cholesterol levels for individuals following a low carbohydrate diet for at least 6 months to individuals following a conventional (low fat, low calorie )diet for at least 6 months.
A metropolitan school system consists of two districts- north and south. the north district contains 60% of all students, and the south district contains 40% of all students.
A tailor makes wool tweed sport coats and wool slacks. He is able to get a shipment of 150 square yard of wool cloth from Scotland each month to make coats and slacks
It has been determined that the mean life is 1000 hours and the standard deviation is 50 hours. It can be concluded that at least 89% of the bulbs will last between?
Then compute the probability of B in each situation (these are the P(B|An)). Finally weigh each of these probabilities with the probabilities that you are in an situation.
a automobile manufacturer produces 77 of its cars at plant a. 5 of car made at plant a have a malfuction. what is
Find the Bayesian estimator of µ that minimizes squared error loss.
Assume that the population proportions are to be estimated from the samples described. Find the margin of error and the 95% confidence interval.
A normal distribution with a mean of 33 oz. and a standard deviation of 0.8 oz. What proportion of packets are underweight (i.e., weigh less than 32 oz.)?
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