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A town has a population of exactly 10,000 people.
(a) What is the MEAN and STANDARD deviation of the number of people celebrating their birthday on any given day?
(b) Which statistical model was used, and why?
(c) What is the probability that either 26 or 27 people are celebrating their birthday on a given day?
a population has a mean of mu 30 and a dtadard deviation of 5. if 5 points were added to every score in the population
sketch and determine the area under the standard normal curve that liesi.to the left of -3.20ii. to the right of
In a normal distribution of 1,000 aptitude test scores, with a mean of 60 and a standard deviation of 8, how many scores fall:
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Consider following data on exam scores of 10 randomly selected students: Compute 3rd quartile of the exam scores.
What sample size and acceptable level would result in a probability of .05 that a good batch will be rejected and a probability of .10 that a bad batch will be accepted?
Can we conclude at the 5% significance level that the population mean weight of athletic men is lower than the population mean weight of non-athletic men?
Does there seem to be any difference in the effect of the antibiotics on clearance of otitis media? Express your results in terms of relative risk (RR). Consider separate analyses for unilateral and bilateral cases. Also consider an analysis combi..
using two independent samples we test for a hypothesized difference between two population means. the population
do students at various universities differ in how sociable they are? twenty-five students were randomly selected from
a variety of studies suggest that 10 of all people are left-handed. does the student survey data support this
suppose the historical average work week was 39.2 hours and sd was 4.8 hours as reported by the department of labor.
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