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What is the minimum sample size n is needed to estimate u for the values of c= 0.90, o=9.8, and E=1. Assume that a preliminary sample has at least 30 members.
Batteries. In a group of 10 batteries, 3 are dead. You choose 2 batteries at random.
Construct a 90% confidence interval for the proportion of all kernels that would not pop.
Annually from tornadoes in the U.S.A. is less than 30. If a sample of 9 randomly selected years had a standard deviation of 29, is the claim believable? Use = .01?
A federal report find that a lie detector test given to truthful persons have a probability of 0.2 of suggesting that the person is deceptive. What is the probability that at most one is being deceptive
A distributor of spices and seasonings checks moisture content of lots of pepper that it receives from a supplier. The company's specifications on moisture.
1.ginger root is used by many as a dietary supplement. a manufacturer of supplements produces capsules that are
What percentage of the overall sample did not smoke and had not ever been divorced?- Determine a complete set of row percentages.
Subscribe to Cool Teen and 35% subscribe to neither magazine, what is the probability that a randomly selected teenager subscribes to both magazines?
Use a 0.05 significance level to test the claim that the three categories of cigarettes yield the same mean amount of nicotine. Given that only the king size cigarettes are not filtered, do the filters appear to make a difference
At the 5% level of significance, is there evidence of a difference among the mean access read times for the three files sizes?
Draw the relationship between the crime rate and Dr. Schalkoff's patient load. Is a linear model between these two variables reasonable?
In each of the following cases. find the mean , variance and standard of the sampling distribution of sample proportion p.
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