Mathematics

Mathematics, 24.07.2019 02:00, Emiann222

Determine the probability that the sample standard deviation, from a random sample of 10 measurements (and based on a divisor of n − 1), will exceed 0.02.

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Mathematics, 01.07.2019 23:20, abby986

Without doing any computation, decide which has a higher probability, assuming each sample is from a population that is normally distributed with mean=100 and sigma=15. expalin your reasoning.a) p(90? x(bar)? 110) for a random of size n=10.b) p(90? x(bar)? 110) for a random sample of size n=20.correct a) (90? x(bar)? 110) for a random sample of size n=20 has a higher probability. as n increases, the standard deviation decreased.b) (90? x(bar)? 110) for a random sample of size n=10 has a higher probability. as n increases, the standard deviation decreased.c) (90? x(bar)? 110) for a random sample of size n=20 has a higher probability. as n increases, the standard deviation increases.d) (90? x(bar)? 110) for a random sample of size n=10 has a higher probability. as n increases, the standard deviation increases.

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Mathematics, 14.09.2019 04:30, sanafarghal

Select the correct answer below: a convenient sample of 23 individuals is taken from the residents of a city with approximately normally distributed commute times. the sample mean is 19 minutes and the sample standard deviation is 2 minutes. o a population is used to obtain a sample mean of 53 and a sample standard deviation of 7 based on a convenien sample of size 19. o a sample mean of 70 and sample standard deviation of 7 are obtained using a simple random sample of size 19 from a normally distributed population. a sample mean of 194 pages and a standard deviation of 37 pages are obtained using a simple random sample of 30 books from a public library having approximately normally distributed numbers of pages. the population standard deviation is 31.4 pages. ous

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Mathematics, 29.10.2019 03:31, lily3934

Arandom sample of size 25 is taken from a nor- mal population having a mean of 80 and a standard deviation of 5. a second random sample of size 36 is taken from a different normal population having a mean of 75 and a standard deviation of 3. find the probability that the sample mean computed from the 25 measurements will exceed the sample mean com- puted from the 36 measurements by at least 3.4 but less than 5.9. assume the difference of the means to be measured to the nearest tenth.

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Mathematics, 01.11.2019 03:31, YOURKINGNESS7689

1. the sat test scores have an average value of 1200 with a standard deviation of 105. a random sample of 35 scores is selected for study. a) what is the shape, mean(expected value) and standard deviation of the sampling distribution of the sample mean for samples of size 35? b) what is the probability that the sample mean will be larger than 1235? c) what is the probability that the sample mean will fall within 25 points of the population mean? d) what is the probability that the sample mean will be less than 1175?

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