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if no preliminary sample is

In a preliminary study, the sample standard deviation for the duration of a particularback pain suffered by patients was 18.0
1. 1 answer
2. asked by joe
3. 1,573 views
A quality control inspector wants to estimate the mean inside diameter of the washers produced by acertain machine. A
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2. asked by Carolyn
3. 588 views
if no preliminary sample is taken to estimate p, how large a sample is necessary to be 87% sure that the point estimate will be
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2. asked by Robin
3. 416 views
What is the minimal sample size needed for a 99% confidence interval to have a maximal margin of error of 0.06 if there is no
1. 2 answers
2. asked by Lynn
3. 3,467 views
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 35 bacteria reveals a
1. 1 answer
2. 10 views
Suppose that a random sample of n kernels of popcorn is taken and x of these kernels pop. The buyer wants to be 95% sure that
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2. asked by Apryl
3. 569 views
1)Why is it possible to extract sodium and aluminium by use of electrolysis method and not by radiation like in the case of
1. 1 answer
2. asked by Maggie. K
3. 57 views
How can I solve this?A random sample of medical files is used to estimate the proportion p of all people who have blood type B.
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2. asked by trish
3. 1,636 views
You are a researcher studying the lifespan of a certain species of bacteria. A preliminary sample of 25 bacteria reveals a
1. 1 answer
2. 55 views
If you have no preliminary estimate for p, how many business phone calls should you include in a random sample to be 98% sure
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2. asked by Anonymous
3. 720 views