Mathematics, 12.04.2021 23:00 Isactuallycarter99
g The compressive strength of concrete is normally distributed. A random sample of 12 concrete specimens from Factory 1 yields a sample mean equal to 1,284.5 pounds per square inch (psi) and a sample variance of 872.9 psi2. A random sample of 14 concrete specimens from Factory 2 yields a sample mean equal to 1,324.3 psi and a sample variance of 1,851.9 psi2. If you do a test of hypothesis to see if the means of the concretes from Factory 1 and Factory 2 are equal or not, what is the numerical value of the test statistic
Answers: 1
Mathematics, 21.06.2019 15:00
What are the coordinates of the point is 1/4 of the way from a (-6, -3) to b (6, 1)? a. (-3, -2) b. (0, -2) c. (-1, 0) d. (3, 2)
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Mathematics, 21.06.2019 16:30
The temperature of chicken soup is 192.7°f. as it cools, the temperature of the soup decreases 2.3°f per minute. what is the temperature in degrees fahrenheit of the soup after 25 minutes? a. 27.3°f b. 57.5°f c. 135.2°f d. 250.2°f
Answers: 1
g The compressive strength of concrete is normally distributed. A random sample of 12 concrete speci...
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