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The construction costs (N'000s) and selling prices (N'000s) of new houses in the Coal City were as follows in 1988:
Cost/House Selling Price Number of Houses
30 - 40 45 - 55 18141 - 51 56 - 66 32652 - 62 67 - 77 30063 - 73 78 - 88 175
(a) Find the median cost of houses at Coal City in 1988.
(b) Find the modal selling price of houses at Coal City in 1988.
A statistics instructor wants to know which route will get her to school the fastest. Each day from October 2 to November 15, when she gets to the turn point she checks the odometer on her car
Summarize the relationship between sample size and confidence level.
There were 3 defectives in the first batch and 5 in the second. Find a 95% confidence interval for the difference in the proportion of defectives.
What is the probability that Sara will die in her 60 th year? Using this probability and the $50,000 death benefit, what is the expected loss to Big Rock Insurance?
Set up hypotheses and test to find out whether or not population variance is larger than $100.
In Colorado Springs the newspaper runs mug shots of wanted criminals. The 17% of those published are arrested through information provided to the police. If 200 are published, find the probability that less than 30 are arrested.
How can you or your department decide whether or not the variation is important? How could using a mean difference test help?
Formulate the hypotheses that can be used to test the validity of the brokerage firm executive's claim.
Use the t test to determine whether the slope of the regression model is significant at α = 0.05.
Determine the mean for list of numbers. 6, 5, 9, 4, 14, 9 (Round to the nearest tenth)
To test is there any significant difference among two proportions. The Damon family owns a large grape vineyard in western New York along Lake Erie.
Suppose the weights of full boxes of a certain kind of cereal are normally distributed with a population standard deviation of 0.29 ounces.
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