Mathematics, 20.08.2019 22:10 namira16
An engineer designed a valve that will regulate water pressure on an automobile engine. the engineer designed the valve such that it would produce a mean pressure of 5.4 pounds/square inch. it is believed that the valve performs above the specifications. the valve was tested on 9 engines and the mean pressure was 5.7 pounds/square inch with a variance of 0.81. a level of significance of 0.025 will be used. assume the population distribution is approximately normal. determine the decision rule for rejecting the null hypothesis. round your answer to three decimal places.
Answers: 3
Mathematics, 21.06.2019 15:30
After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30
Answers: 1
Mathematics, 22.06.2019 02:30
There are three grizzly bears in the city zoo. yogi weighs 400.5 pounds, winnie weighs 560.35 pounds, and nyla weighs 628.29 pounds. what is the average weight of the three bears? (hint: what do they weigh all together? ) a. 502.97 pounds c. 604.38 pounds b. 529.71 pounds d. 794.57 pounds
Answers: 1
Mathematics, 22.06.2019 03:00
Darcy deposited $390 into a savings account. as long as the account balance remains at or above $150, she does not have to pay a service fee for the account. for how many months can she withdraw $40 a month without having to pay service fees? a) 3 b) 5 c) 6 d) 9
Answers: 1
Mathematics, 22.06.2019 03:30
Graph each quadratic function and identify its key characteristics. f(x) = x^2 - 2x - 3
Answers: 1
An engineer designed a valve that will regulate water pressure on an automobile engine. the engineer...
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