Express equation which finds how much water added
Express the equation in terms of x which finds out how much water must be added to x liters of the 18% acid solution to decrease concentration to 15%?
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Using empirical rule, find out the approximate percentage of a normal distribution that is expected to fall in the interval described.
The chair of the board of directors says, "There is the 50 percent chance this company will earn the profit, a 30 percent chance it will break even, and 20 percent chance it will lose money next quarter."
The car travels for the total of 10 hours. Car averages 60 miles per hour for x hours and averages 70 miles per hour for rest of time. Write total distance traveled by car in terms of x.
When the parachute is inspected, the inspector is looking for anything that may indicate the parachute might not open. State the null and alternative hypotheses.
When coin 1 is flipped, it lands on heads with probability 0.4 when coin 2 is flipped, it lands on heads with probability 0.7. One of these coins is randomly chosen and flipped 10 times.
A production procedure is checked periodically by the quality control inspector. The inspector chooses simple random samples of 30 finished products and calculates the sample mean product weight.
Determine reference angle of -3/10 radians in radians? Angles of depression are found to be 26 degrees and 28 degrees. How high (in feet) is ballon?
For each of the following combination of the confidence level and sample size determine the appropriate t-value.
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