A random sample of 48 calculus test scores has an average of
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Get it written →A random sample of 48 calculus test scores has an average of 68.5 with a standard deviation of 12.1. The sample data was not too strongly skewed. Answer the following questions.What is the standard error of x¯ ? Round to 2 decimal places.Use the theory-based applet to find the lower bound of a 98% CI for μ . Round to one decimal place.Use the theory-based applet to calculate the upper bound of for a 98% CI for μ . Round to one decimal place.A 99% confidence interval for the average score on a calculus test is (54.6, 72.5) based on 24 tests. Answer the following questions based on this.What was the value of the average test score or x¯ ? Round to 1 decimal place.What is the margin of error? Round to 1 decimal place.
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