A shop earned the profit $P at the end of the first year. In the secon..
A shop earned the profit $P at the end of the first year. In the second year, the company profit increased by $x, and in the third year it increased by $y. At the end of the third year, the company profit would be $P + ($x + $y). Find the equivalent expressio..
A company produces chain ring bolts and the pack should contain on an ..
A company produces chain ring bolts and the pack should contain on an average 10 grams with a standard deviation of 1.3 grams. The mean weight of a sample of 40 packs is observed as 9.4 grams. Find the p -value for the test. Can it be concluded that the company is fill..
P & R washing machine manufacturing company conducted tests on differe..
P & R washing machine manufacturing company conducted tests on different models of washing machines before launching them into the market to know the weights (in kgs) they can withstand for a particular drum size. The results are 6, 5.5, 7, 8, 6.3 and 7.2. Find the standard devi..
A survey suggests that 90% of the chief executives of the largest comp..
A survey suggests that 90% of the chief executives of the largest companies in the United States are of above average height. From a random sample of 140 executives it was observed that 119 are of above average height. Find the p -value for the test. Is there enough evidence to ..
A company's profit (in millions of dollars) is given by P = 3x2 - 28x..
A company's profit (in millions of dollars) is given by P = 3 x 2 - 28 x + 32 where x is the amount (in thousands of dollars) spent on marketing. Find the values of x for which the company makes a profit. => x < 4 / 3 or x > 8 or x < 4 / 3 or x > 8 ..
A consumer claims that the standard deviation of the quantity of softd..
A consumer claims that the standard deviation of the quantity of softdrink in a bottle is more than 0.23 oz. The researcher of the company selected a sample of 10 bottles and found the standard deviation as 0.32 oz. Find the P -value for the test. At α = 0.05, is there eno..
A company's profit is given by P = - 15x2 + 180x + 9000 where x is the..
A company's profit is given by P = - 15 x 2 + 180 x + 9000 where x is the price of the product in dollars. Graph this equation. Also find the price that would produce the maximum profit. => Graph 2; a price of $8 of the product yields a maximum profit or Graph 1; a price of $6 o..
A survey conducted by an automobile company showed the number of cars ..
A survey conducted by an automobile company showed the number of cars per household and the corresponding probabilities. Number of cars X 1 2 3 4 Probability P(X) 0.32 0.51 0.12 0.05 Find the standard deviation. => 0.63 or 0.79 or 1.9 or 4.24..
Tim runs a textile company that manufactures T-shirts. The profit made..
Tim runs a textile company that manufactures T-shirts. The profit made by the company is modeled by the function p = s 2 + 9 s - 1620, where s is the number of T-shirts sold. Find the least number of T-shirts to be sold so that Tim does not end up in a loss. => 40 or 3..
Sam started a company in 1992. His profit in thousands of dollars can ..
Sam started a company in 1992. His profit in thousands of dollars can be estimated by the model P = 8.34 t 2 - 3.52 t + 10.24 where ' t ' represents the number of years since 1992. Using this model, find out in which year approximately his profit becomes $1,170,000. => 2010 or 2..
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