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Hits on a website occur quite infrequently. They occur randomly and independently with an average of 5 per week.
a) Find the probability that the site gets 10 or more hits in a week.
b) Determine the probability that the site gets 20 or more hits in 2 weeks.
What is a "Chi-Squared Test"? Provide a fully referenced explanation and provide a brief example on a Chi-squared test, fully referencing all sources of information.
In the real world, given null hypothesis is false; but the collected data lead to the null hypothesis being accepted. That is, the data lead to a failure to reject null hypothesis.
The waiting times have a standard deviation of 5.7 minutes. Use a 0.025 significance level to test the claim that with a single line, waiting times vary less than with individual lines.
The mean number of hours of flying time for pilots at Continental Airlines is 49 hours per month (The Wall Street Journal, February 25, 2003).
Their resting heart rates were measured. A partial ANOVA table is given.
A group of investors wants to develop a chain of fast food cafés. In determining potential costs for each facility, they must consider, among other costs, the average monthly cost of electricity.
For a sample of n 4 weeks in which the daily temperature was extremely hot, the weekly average of hit-by-pitch players was M 15.5. Are players more likely to get hit by pitches during hot weeks?
Find the regression equation and percentage of variance and test whether the equation is significant portion of the variance.
iven an infinite population with a mean of 75 and a standard deviation of 12, the probability that the mean of a sample of 36 observations taken at random from this population exceeds 78 is?
You're considering paying $5 to buy a ticket in a local lottery. You were told that 10,000 tickets will be sold. There are 5 prizes. The first prize is $5,000, the second is $1,000, the third is $500, the fourth is $100 and the last prize is $10.
Given that x and y are both positive, solve the simultaneous equations.
Given a binomial distribution with n=29 and p=0.83, would the normal distribution provide a reasonable approximation? Why or why not.
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