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According to the regional bar assoc., 60% of people who take the bar exam pass. Find the approximate probability that at least 61% of 200 randomly selected people taking the bar will pass. Round to three decimal places as needed.
Describe the difference in the fit provided by the two estimated regression equations.
Use expected collision claim amount to find out the collision insurance premium that would permit the company to break even on collision portion of policy.
Explain finding value of test statistic for the given data also interpret the result. Can Mr. Ratter compute which the mean weight of the bags is less than 50 pounds.
Construct a 90 percent confidence interval for the proportion of all kernels that would not pop.
If statistically significant, do you believe the difference is large enough to be significant? If so, to whom, and explain why? Is normality assumption fulfilled? Describe.
A researcher used stepwise regression to create regression models to predict Birth-Rate (births per1000) using five predictors:
A doctor believes that the standard deviation of systolic blood pressure is 450. A random sample of 24 patients found a standard deviation of 520. Assume the variable is normally distributed and a = 0.01. What are the critical values?
Sample mean is 50, t-statistic is 1.96, and standard error of sample mean is 2. Determine the 95 percent confidence interval?
What should the cut-off score be for the interviews? (Round to nearest whole number).
At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? State the null hypothesis and the alternate hypothesis.
What would you predict the price per share to be if 95 million shares were offered?
What is the best estimate of the average tread life in miles for the entire population of these tires?
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