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1) What is the 95% Confidence Interval for the true population slope between Wins and Saves?
2) What is the standard error of the estimate and what are its units?
3) Determine if there is a significant relationship between Y and the explanatory variables in the model at alpha = .05.State the hypotheses, p-value, and the conclusion.
4) Perform a residual analysis of the plots of the residuals versus the predicted Y's, and each of the independent variables?
What is the probability of selecting a value at random and discovering that it has a value of less than 395 pounds?
A car manufacturer tests the first 1,000 cars coming off the assembly line to see if their new anti-lock braking system works correctly. Use the typical values for control limits.
A drawer contains 11 identical red socks, and 8 identical black socks. Suppose that you choose 2 socks at random in the dark
Develop a 99 percent confidence interval for the population proportion.
Statisticians prefer large samples. Describe briefly the effect of increasing the size of a sample on each of the following: The margin of error of a 95% confidence interval?
The hypothesis test produces a z-score of z = -2.60. Assuming that the researcher is using a two-tailed test, what is the correct statistical decision.
Of the adults in Jefferson County, 10% have had CPR training
Why is population shape of concern when estimating a mean? What does sample size have to do with it?
Distributed with a mean of $150 and standard deviation of $25. About how many of the students spend less than $100 on books?
A die is loaded in such a way that the probability of each face turning up is proportional to the number of dots on that face. What is the probability of getting an even number in one throw?
The mean fare charged for service from the beach to the airport is $18.00 and the standard deviation is $3.50. We select a sample of 15 fares. What must you assume to make the above calculation?
A survey of 600 non-fatal accidents showed 259 involved the use of a cell phone. Construct a 99% confidence interval for the proportion of fatal accidents that involved the use of a cell phone?
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