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An independent consumer group published its finding that the lifetimes of electric bulbs manufactured by BIG Corporation are approximately normally distributed with a mean of days and a standard deviation of . BIG Corporation claims that the standard deviation of its electric bulbs is less than . Suppose that we want to carry out a hypothesis test to see if BIG Corporation's claim is correct. State the null hypothesis and the alternative hypothesis that we would use for this test.
What is the predicted height in feet of a tree that produces 88 pounds of oranges?
four pairs of data yield r=0.942 and the regression equation y=3x. also, y=12.75. what is the best predicted value of y for x=2.9
what are the three consecutive even numbers that have a product of 480? I know it's 6, 8, 10. But how can you solve it using factoring. x(x+2)(x+4) = 480 simplifies down to x^3 + 6x^2 + 8x - 480 = 0. Then what do you do?
What's the probability the newspaper's sample will lead them to predict defeat?
Run the lab_03_01.sql script in the attached file to create the SAL_HISTORY table. Display the structure of the SAL_HISTORY table.
A fish tank is 1 yd long, 1.5 ft high, and 15 in wide. Determine the volume of water in the fish tank in cubic feet.Determine the weight of the water in pounds. One cubic foot of water weighs about 62.5 pounds.
If you randomly select one butterfly from the table above, what is the probability of selecting a red butterfly or one collected in spring? Explain the addition rule.
Determine the linear correlation coefficient using x = HP and y = MPG. Perform the hypothesis test of rho to determine whether horsepower and gasoline mileage are negatively correlated at the one percent level of significance? [For the critical value..
What is the probability that those three segments can form a triangle? Probability of Forming a Channel
Suppose a diver leaps from the edge of an 80foot cliff. His initial upwards velocity is 8 feet per second. When will he hit the water?
Find the sum and enter it in the box below. Enter your answer as a polynomial in descending order, and use the caret (^) for exponents. For example, you would write as 4x^2.
Two ships leave a port at the same time. Ship M travels north, and Ship N travels east. Five hours later, the two ships are 135 miles apart. If Ship N has traveled 108 miles from the port, how many miles has Ship M traveled?
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