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Chi square compares actual data with expected data. What would the expected data be? For example, if I know the percentage of brown M&Ms in a bag is 40% set by the company, but I open up a bag that is 50% brown M&Ms, I could run a chi square to see if there is a significant difference. This might lead the company to see that something is wrong with the packaging at the particular facility.
Airlines monitor the causes of flights arriving late. 75% of flights are late because of weather, 35% of flights are late because of ground operations. 10% of flights are late because of weather and ground operations.
What is the intercept for the logistic regression equation and What is a 95% confidence interval for the odds ratio
The Price-to-Earnings ratio (P/E) of a publicly listed profit-making company is defined as the ratio of the stock price of the company to the earnings per share.
With a single-sample t ratio, the null hypothesis states that:
Assume that Leo advertises "If it takes more than 30 minutes to get your pizza, you get it free". What percentage of his take-out pizzas will have to give away free?
What can we conclude from these figures at a level of significance of .01?
Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample approximately half the size.
Conditional and compound probabilities.The table below gives the distribution of blood types by gender in a group of 1000 individuals.
The number of degrees of freedom corresponding to between treatments is:
If 1 man aged 18-24 is arbitrarily chosen, determine the probability that his serum cholesterol level is between 165 and 200.
P-value for test statistic is .085, determine the minimum level of significance needed to reject null hypothesis?
If the mean times for both George and Julia are actually the same, what is the probability that George will be let go?
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