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Task: Of the estimated natural gas reserves in North America, 4.59 *10^9 m ^3 are in the United States. 2.66*10^9 m^3 are in Canada, and 1.99*10^9 m^3 are in Mexico. In making a circle graph (circular sectors represent percentage of the whole - a pie chart) with a radius of 4.00 cm for these data, what are the central angle and area of the sector that represents Canadian Reserves?
Note: Theta is 2 times area divided by radius squared.
In the 1992 U.S. presidential election, Bill Clinton received 43% of the vote compared to 38% for George H. W. Bush and 19% for Ross Perot. Suppose we had taken a random sample of 100 voters in an exit poll and asked them for whom they had voted.
In healthy adults, x is approximately normally distributed with mean µ = 38 and standard deviation σ = 12. What is the probability that:
Problem based on decision tree - Evaluate the strategy that maximizes the manufacturer's expected net earnings.
Set up hypotheses to test if distribution of birthdays can be considered coming from uniform distribution.
What is our decision regarding differences between observed and expected frequencies if critical value of chi-square is 9.488 and computed value is 6.079.
Does drug have significant effect on aggression? Use an alpha level of .05, two tails.
A company has set a goal of developing a battery that lasts over 5 hours in continuous use in a sample of 42 of these batteries the mean life time was 306.25 hours with a standard deviation of 29.31
Assume that flight times from SAN to ATL are exponentially distributed with a mean of 4.5 hours and a standard deviation of 0.2 hours. Assume that you must fly from SAN to ATL weekly for the lucrative consulting engagement for one year (52 flight..
Randomly select a sample of five rental agencies. Start with row two and column two. The number is 90935. Use the first two numbers starting with 90.
Find out best decision, by using following decision criteria.
Use the trend equation to calculate the points for 2003 and 2005. Plot them on the graph and draw the regression line.
Using the .02 level of significance, conduct a five-step hypothesis testing procedure to determine if the new processes significantly reduced the wait time.
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