Explain. 6.42 Granium in the Earth's crust. Refer to the American Mineralogist (Oct. 2009) study of the evolution of uranium minerals in the Earth's crust, Exercise 5.9 (p. 238). Recall that researchers estimate that the trace amount of uranium x in reservoirs follows a uniform distribution ranging be- tween 1 and 3 parts per million. In a random sample of n = 60 reservoirs, let x represent the sample mean amount of uranium. a. Find E(ã) and interpret its value. b. Find Var(x). c. Describe the shape of the sampling distribution of x. d. Find the probability that is between 1.5 ppm and 2.5 ppm. e. Find the probability that x exceeds 2.2 ppm. oni Pefer to The
Explain. 6.42 Granium in the Earth's crust. Refer to the American Mineralogist (Oct. 2009) study of the evolution of uranium minerals in the Earth's crust, Exercise 5.9 (p. 238). Recall that researchers estimate that the trace amount of uranium x in reservoirs follows a uniform distribution ranging be- tween 1 and 3 parts per million. In a random sample of n = 60 reservoirs, let x represent the sample mean amount of uranium. a. Find E(ã) and interpret its value. b. Find Var(x). c. Describe the shape of the sampling distribution of x. d. Find the probability that is between 1.5 ppm and 2.5 ppm. e. Find the probability that x exceeds 2.2 ppm. oni Pefer to The
MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Transcribed Image Text:Explain.
6.42
Granium in the Earth's crust. Refer to the American
Mineralogist (Oct. 2009) study of the evolution of uranium
minerals in the Earth's crust, Exercise 5.9 (p. 238). Recall
that researchers estimate that the trace amount of uranium
x in reservoirs follows a uniform distribution ranging be-
tween 1 and 3 parts per million. In a random sample of
n = 60 reservoirs, let x represent the sample mean amount
of uranium.
a. Find E(ã) and interpret its value.
b. Find Var(x).
c. Describe the shape of the sampling distribution of x.
d. Find the probability that is between 1.5 ppm and
2.5 ppm.
e. Find the probability that x exceeds 2.2 ppm.
oni
Pefer to The
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