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Suppose X has a poision distribution with a mean of .4. Determine the following probabilities:
a) P(X=1)=
b)P(X<=2)=
A random sample of 50 students from this school was selected, and the mean math SAT score was 530. Is the high school justified in its claim? Explain.
Let the following all-integer linear program: Max 1x1 + 1x2, s.t. 4x1 + 6x2
Political polls typically sample randomly from the U.S population to investigate the percentage of voters who favor some candidate or issue. The number of people polled is usually on the order of 1000.
In a regression analysis involving 30 observations, the following estimated regression equation was obtained.
By using.02 level of significance, carry out a 5-step hypothesis testing procedure to find out if new processes considerably reduced the wait time.
question 1new horizons airlines wants to forecast the mean number of unoccupied seats per flight to germany next
Sample of 36 packages reveals mean weight to be 3.01 pounds, with standard deviation of 0.03 pounds. What is the estimated population mean?
How large a sample must one take to be 90% confident that the estimate is within 0.05 of the true proportion of women over 55 who are widows?
Create the indicated confidence interval for population mean µ using a t- distribution.
Regression model results can be erroneous if multicollinearity is an issue. What causes multicollinearity? If the intercept is statistically significant, what does this tell you?
is the following a probability distribution? if not identify the requirement that is not satisfied.x px0 0.2291 0.1552
the standard deviation of a distribution is 20. if a sample of 225 is selected what is the standard error of the
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