Mathematics, 10.12.2019 08:31 zaniathomasel
The graph represents the distribution of the number of questions answered correctly on a 50-question math test. a graph shows the horizontal axis numbered 24 to x. the vertical axis is unnumbered. the graph shows an upward trend from 24 to 36 then a downward trend from 36 to 48. what is the standard deviation of the data?
a)4
b)8
c)12
d)24
Answers: 1
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Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin
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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
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The radius of the earth is two times the radius of the moon. what fraction of the volume of the earth is the volume of the moon?
Answers: 1
The graph represents the distribution of the number of questions answered correctly on a 50-question...
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