Friday
May 24, 2013

# Posts by barbara

Total # Posts: 196

Math: Rational Exponents
simplify completely. give your answer without fractional exponents. (8(s^-3)*(t^5))^(3/5)/(2(s^7)*(t^-2))^(3/5))

Statistics
A student score 78 on his statistics test where the average score was 90 the the standard deviation was 7.

statistics
what is the variance and standard deviation for the group of numbers: 28 27 48 52 77 29 30 31 60

\$16,926.24

math
100+87+95+125+210+250+57=924\7=132

chemistry
How many grams of AgNo3 are required to make 25 mL of a .80M solution?

MTH 156
On a map, the length of a nature-center trail is 8.2 centimeters. If the scale is 3 centimeters to 24 kilometers, what is the actual length of the trail.

Math
when two fair dice are rolled find the probability that the sum is even and greater than 8

statistics
Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of \$2,225 per hour and a standard deviation of \$220. What is the operating cost for the lowest 5 percent of the airplanes?

Statistics
The closing price of Schnur Sporting Goods, Inc., common stock is uniformly distributed between \$17 and 35 per share. What is the probability that the stock price will be: More than \$31? Less than or equal to \$23?

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