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Iq score for adults age is 25 - 45 have a bell shape distribution with a mean of 100 and the standard deviation of 15. Using the empirical rule what percentage of adults is 25 - 45 has iq score bet 70 and 130.
Determine a 95 percent confidence interval for the population mean.
Determine the mean and standard deviation for number of actual voters in groups of 1002.
Find a 95% confidence interval for the mean amount of money µ spent at the waiter's tables.
Now he wants to know if there is a difference between the three formats. Is there?
He randomly samples 45 oil wells throughout the United States and determines the mean output to be 10.7 barrels per day with a standard deviation of 1.3 barrels. Test the researcher's claim at the .025 level of significance.
Calculated test statistic, decision about the null hypothesis interpretation of results, and a list of references consulted.
The function that defines the probability distribution of a continuous random variable is a?For a continuous random variable x, the probability density function f(x) represents.
A teacher divides her class into two groups. One group is taught a lesson on the computer and the other is taught by traditional lecture. The teacher then gives a test to see that group has better grades.
Solve the mean and standard deviation equations
Use the trend equation to calculate the points for 2003 and 2005. Plot them on the graph and draw the regression line.
If true explain and if false give an example. a. The significance level of a statistical test is equal to the probability that the null hypothesis is true. b. If the significance level of a test is decreased, the power of the test would be expected t..
The probability that a bomber hits a target on a bombing mission is 0.700. Three bombers are sent to bomb a particular target.
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