Mathematics, 08.08.2019 19:20, topangabraith
To obtain information on the corrosion-resistance properties of a certain type of steel conduit, 45 specimens are buried in soil for a 2-year period. the maximum penetration (in mils) for each specimen is then measured, yielding a sample average penetration of x = 53.4 and a sample standard deviation of s = 4.4. the conduits were manufactured with the specification that true average penetration be at most 50 mils. they will be used unless it can be demonstrated conclusively that the specification has not been met. what would you conclude? (use α = 0.05.) state the appropriate null and alternative hypotheses.
Answers: 3
Mathematics, 22.06.2019 00:30, victoria8281
Which ordered pair identifies a point in quadrant iv? a) (2, 5) b) (0, 1) c) (-1, -1) d) (12, -5) which quadrant is (-4,-6) in? a) i. b) ii. c) iii. d) iv.
Answers: 3
Mathematics, 22.06.2019 07:40, mlittleduck6947
Which of these measurements is aboutthe same as 100 inches? a 10 centimetersb 250 centimetersc 6 metersd 30 meterswhich of these is the same as thenumber in the place-value chart? 1,000s | 100s 110s 1141 91 0a 1,994b 1,000 + 900 + 40cone thousand nine hundred fod 1 thousand 9 hundreds 4 tenswhich group of numbers is missingfrom this number pattern? 8, 12, 16, 32f 17, 18, 19g 17, 20, 23i 20, 24, 2822, 26, 30what number is missing from tnumber pattern? 20, 16, 18, 14, 16, -, 14, 10f 12g 15h 17j 18
Answers: 3
Mathematics, 22.06.2019 08:20, mercedesamatap21hx0
Aball is thrown at an initial height of 7 feet with an initial upward velocity at 27 ft/s. the balls height h (in feet) after t seconds is give by the following. h- 7 27t -16t^2 find the values of t if the balls height is 17ft. round your answer(s) to the nearest hundredth
Answers: 2
To obtain information on the corrosion-resistance properties of a certain type of steel conduit, 45...
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