Mathematics, 12.06.2020 02:57 hahah265
A college admissions director wished to estimate the mean age of all students currently enrolled. In a random sample of 20 students, the mean age is found to be 22.9 years. From past studies, the standard deviation is known to be 1.5 years, and the population is normally distributed. Construct a confidence interval for 95% and 99% of the population mean age.
Answers: 3
Mathematics, 21.06.2019 23:00, cifjdhhfdu
If a company produces x units of an item at a cost of $35 apiece the function c=35x is a of the total production costs
Answers: 2
Mathematics, 22.06.2019 02:00, ehaynie
Brittany has designed four different birdcages, each with the same volume: a square pyramid, a cylinder, a cone, and a sphere. the zoo wants to use one of brittany’s designs but plans to change the volume of the cage. find the design change that would result in the birdcage with the greatest volume. a.) increase the area of the base of the square pyramid by a factor of ten. b.) increase the height of the cylinder by a factor of ten. c.) increase the radius of the cone by a factor of ten. d.) increase the radius of a sphere by a factor of ten.
Answers: 1
A college admissions director wished to estimate the mean age of all students currently enrolled. In...
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