Mathematics, 30.06.2020 06:01 fhemmie963
If (-3) to the exponent of -5 = 1/x , what is the value of x? -243 -1/243 1/243 243
Answers: 2
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
Mathematics, 21.06.2019 19:40
Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.
Answers: 3
Mathematics, 22.06.2019 01:00
Which number produces an irrational number multiplied by 1/3
Answers: 1
Mathematics, 22.06.2019 02:30
Solve the system of equations. x=-2y+1 and x+2y=9. show work
Answers: 1
If (-3) to the exponent of -5 = 1/x , what is the value of x? -243 -1/243 1/243 243...
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