Mathematics, 18.12.2019 21:31 ineedhelp2285
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 = 53.6 and a sample standard deviation of s = 4.9. 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. h0: μ ≠ 50 ha: μ > 50 h0: μ = 50 ha: μ ≠ 50 h0: μ > 50 ha: μ = 50 h0: μ = 50 ha: μ > 50
Answers: 3
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Match each statement with its corresponding value for the system below: y = -2(3)x and y = 9x - 2 1. the number of points of intersection. -2 2. the x-coordinate of the solution. 1 3. the y-coordinate of the solution. 0
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Mathematics, 21.06.2019 19:30
Powerful women's group has claimed that men and women differ in attitudes about sexual discrimination. a group of 50 men (group 1) and 40 women (group 2) were asked if they thought sexual discrimination is a problem in the united states. of those sampled, 11 of the men and 19 of the women did believe that sexual discrimination is a problem. if the p-value turns out to be 0.035 (which is not the real value in this data set), then at = 0.05, you should fail to reject h0. at = 0.04, you should reject h0. at = 0.03, you should reject h0. none of these would be a correct statement.
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Mathematics, 21.06.2019 20:40
What are the values of each variable in the diagram below?
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To obtain information on the corrosion-resistance properties of a certain type of steel conduit, 45...
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