100 mol n-Hexane (C6H14) is burned with excess air. An analysis of the product gas yields the following dry-basis molar composition: 6.9% CO2, 2.1% CO, 0.265% C6H14 (+ O2 and N2). The stack gas emerges at 760 mm Hg. Calculate the percentage conversion of hexane, the percentage excess air fed to the burner, and the dew point of the stack gas, taking water to be the only condensable species.
In: Other
According to the Normal model N(0.056,0.031) describing mutual fund returns in the 1st quarter of 2013, determine what percentage of this group of funds you would expect to have the following returns. Complete parts(a) through(d) below. a) Over 6.8% b) Between 0% and 7.6% c) More than 1% d) Less than 0% Need to find the expected percentage of returns for each of the above.
In: Statistics and Probability
A publisher reports that 48% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 300 found that 45% of the readers owned a particular make of car. Is there sufficient evidence at the 0.02 level to support the executive's claim? Step 2 of 7: Find the value of the test statistic. Round your answer to two decimal places
In: Statistics and Probability
A sample of 1400 computer chips revealed that 69% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 72% of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. Determine the decision rule for rejecting the null hypothesis, H0, at the 0.10 level.
In: Statistics and Probability
A sample of 1200 computer chips revealed that 20% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 22% of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. Find the value of the test statistic. Round your answer to two decimal places.
In: Statistics and Probability
Given a bond with a 15-year maturity, 4% coupon rate, and sells at an initial value of 4%, create an excel table to calculate this bond’s duration, modified duration and convexity.
a. If the bond’s yield increases from 4% to 5%, find the percentage decrease of the bond using the approximation formula
b. If the bond’s yield increases from 4% to 5%, find the percentage decrease of the bond using the duration with convexity formula
In: Finance
In: Statistics and Probability
A sample of 1500 computer chips revealed that 29% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 27% of the chips do not fail in the first 1000 hours of their use. The quality control manager wants to test the claim that the actual percentage that do not fail is different from the stated percentage. Determine the decision rule for rejecting the null hypothesis, H0, at the 0.10 level.
In: Statistics and Probability
In a study of the accuracy of fast food drive-through orders, Restaurant A had 270 accurate orders and 51 that were not accurate.
a. Construct a 90 % confidence interval estimate of the percentage of orders that are not accurate. Express the percentages in decimal form.
______<p<_______
b. Compare the results from part (a) to this 90 % confidence interval for the percentage of orders that are not accurate at Restaurant B: 0.137: 0.137 <p<0.205. What do you conclude?
In: Statistics and Probability
The weights (in ounces) of Tree Frogs from the Southwest are distributed according to N(6.21, .84)N(6.21, .84), while the weights of Northeastern Tree Frogs are distributed according to N(8.14, .67)N(8.14, .67). What percentage of Northeastern Tree Frogs have weights greater than the mean weight of Tree Frogs from the Southwest? Give your answer as a percentage to two decimal places.
In: Statistics and Probability