Mathematics, 13.11.2019 01:31 kianag312
Asample of size 100 selected from one population has 60 successes, and a sample of size 150 selected from a second population has 95 successes. the test statistic for testing the equality of the population proportions equal (specify your answer to the 4th decimal.)
Answers: 1
Mathematics, 21.06.2019 14:30
Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (โ3)ยท(โ2x) + (โ3)ยท(4) step 2: 12 + 6x + (โ12) step 3: 12 + (โ12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition
Answers: 1
Mathematics, 21.06.2019 18:20
The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%
Answers: 1
Asample of size 100 selected from one population has 60 successes, and a sample of size 150 selected...
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