Mean and standard deviation
What is the mean and standard deviation of the following GPA data from a statistics class?
2.86, 3.01, 2.99, 3.27, 3.98, 2.02, 2.56, 3.21, 2.45, 3.44, 2.36, 3.22
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Determine the critical values for a two-tailed test when a = 0.03.
Yes, this is a statement that compares a parameter to a value. Yes, this is a statement that compares two parameters. No, equalities are not permitted in a null hypothesis.
The duration of gestation in helathy humans is approximately 280 days with a standard deviation of 10 days. The gestation periods for a set of four women suffering from a particular condition are 240, 250, 265, and 280 days.
What is the probability that the sample proportion will be within -/+ .03 of the population proportion? What is the probability that the sample proportion will be within -/+ .05 of the population proportion?
What is the mean and standard deviation of the following GPA data from a statistics class? 2.86, 3.01, 2.99, 3.27, 3.98, 2.02, 2.56, 3.21, 2.45, 3.44, 2.36, 3.22
Heights of men on a baseball team have a bell shaped distribution with a mean of 184 cm and a standard deviation of 9 cm . Using the empirical rule, what is the approximate percentage of men between the following values?
Assume the number of farms in the sample is 80, use the empirical rule to estimate the number of farms whose land and building values per acre are between $1400 and $2200.
You wish to estimate, with 95% confidence, the population proportion of U.S. adults who say that plan to support a Republican for president in 2016. Your estimate must be accurate within 5% of the population proportion. Find the minimum sample siz
Assume the readings on a thermometer are normally distributed with the mean of 0 and a standard deviation of 100. Find the probability that a randomly selected thermometer reads between -2.18 and -1.57 and draw a sketch of the region.
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