Mathematics, 14.01.2020 23:31 jakobquittner
Asimple random sample of size n is drawn from a population that is normally distributed. the sample mean, x overbar, is found to be 109, and the sample standard deviation, s, is found to be 10. (a) construct a 96% confidence interval about mu if the sample size, n, is 29. (b) construct a 96% confidence interval about mu if the sample size, n, is 25. (c) construct a 90% confidence interval about mu if the sample size, n, is 29. (d) could we have computed the confidence intervals in parts () if the population had not been normally distributed? click the icon to view the table of areas under the t-distribution.
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Mathematics, 21.06.2019 16:20
The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.
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Mathematics, 21.06.2019 18:00
Galen sold tickets of his church’s carnival for a total of $2,820. children’s tickets cost $3 each and adult tickets cost $5 each. the number of children’s tickets sold was 30 more than 3 times the number of adult tickets slod. how many children’s ticket and how many adult tickets did he sell?
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Mathematics, 21.06.2019 18:00
Manny bought 12 pounds of vegetables at the supermarket. 75% of the vegetables were on sale. how many pounds of vegetables were not on sale? 98 points : )
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Asimple random sample of size n is drawn from a population that is normally distributed. the sample...
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