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Finding the probability value using normal approximation
Use the normal distribution to approximate the desired probability. Find the probability that in 200 tosses of a fair die, we will obtain at exactly 30 faces.
a..0871
b..0429
c..0619
d..1871
If there are 5 choices for a question and there is a 50% chance that the student knows the answer, what is the probability that the student knew the answer to a question he correctly answered?
The combined production level should not exceed 1200 units per month. The demand for product II is no more than half the demand for product I.
(a) Write the fitted regression equation, (c) What is your conclusion about the slope.
Based on surveys conducted in 1989 and 1999, a researcher compared the proportion of high school age females interested in a career in science in 1989 with the proportion in 1999. He concluded that the proportions were not significantly different ..
Using the confidence interval when conducting a two-tail test for the population mean we do not reject the null hypothesis if the hypothesized value for:
Conduct a 3-period moving average, an exponential smoothing forecasting using an alpha of .25, and a seasonal forecast with 3 seasons.
An independent testing services road-tested 36 of the automobiles.
As sample size increases, the standard error of M _______________ .
What are the expected value and variance of the following probability distribution?
The population of lengths of aluminium-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.2 inches.
Select the variable team salary and find the mean, median, and the standard deviation
Run a regression of Y on X in Excel and turn in the output with a note explaining what the coefficients {correlation coefficient (multiple R), standard error, t-statistic and F-statistic} mean.
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