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Suppose that a sample of size 69 is drawn from a population with mean 95 and standard deviation 65 . Find the value of , the mean of the distribution of sample means.
Find the approximate probability that the random sample of 500 candies will contain 25% or more orange candies.
What is the probability of the sample mean weight being more than 3 pounds away from 26?
during a gas leak it is known that there is a 25 risk of developing breathing problems. in the midst of a recent gas
The morning arrival times for 10 days of a school bus at the Tipperary street pickup stop are 8:05, 8:06, 8:09, 8:12, 8:03, 8:15, 8:11, 8:16, 8:00, and 8:14.
You are required to make presentation to all staff on how energy wastage can be reduced. This presentation should include the following.
A researcher selected a sample of 50 residents from each of three different cities to determine if they were willing to participate in a medical experiment. At a = .05, test the claim that the proportions who will participate are equal.
The authors state that the NCRSR and the BDMP are independent sources of information. Do you think that is plausible? What about the other assumptions.
Conduct a one-tailed hypothesis test given the information below. A certain brand of Green Energy light bulbs was advertised as having an average illumination life-span of 2,500 hours. A random sample of 50 bulbs burned out with a mean life-span o..
Create a 95% confidence interval for true mean.
Unexposed women comprising a contro group. at the 0.01 level of significance, was the incidence of cancer greater in the DES users?
What is the probability that exactly three come up heads, if we saw that one came up tails?
According to a recent study, 38% of all women will suffer a hip fracture because of osteoporosis by the age of 85. If six women aged 85 are randomly selected, what is the probability that a) None of them will suffer (or has suffered) a hip fractur..
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