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A student wanted to study the ages of couples applying for marriage licenses in his county. He studied a sample of 94 marriage licenses and found that in 67 cases the husband was older than the wife. Do the sample data provide strong evidence that the husband is usually older than the wife among couples applying for marriage licenses in that county? Explain briefly and justify your answer.
a box has ten coins. six of the coins have a probability of heads 310. the other four coins have probability of heads
the average number of vacation days per year offered by different us companies is skewed to the right. a random sample
a sample of n 25 individuals is selected from a population with fx 80 and a treatment is administered to the sample.
Using the data from Problem 1, answer the following questions: a) What is the regression line that best fits the data?
Explain the scientific and technical concepts related to nuclear medicine. Consider the following questions when you construct your response:
suppose x has density function 3x-4 for x is greater than or equal to 1.a find a function g so that gx is uniform on
what are the probability of you having the disease?
In all, 53 say "good." Does the poll give reason to conclude that more than half of all seniors think their job prospects are good? The hypotheses for a test to answer this question are?
How large should n be so that Chebyshev's inequality guarantees that the estimate is within 5 centimeters from h, with probability at least 0.99?
An analyst working at BC Statistics is compiling a report on the use of the internet at home. In 1997, 250 randomly selected people were asked about the average amount of time spent on the internet per week.
The mean tar content of a simple random sample of 25 unfiltered king size cigarettes is 21.1 mg, with a standard deviation of 3.2 mg.
consider three jars labelled jar 1 jar 2 and jar 3. jar 1 contains one red ball and three green balls. likewise jar 2
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