8.41 Assuming that the sample variances are contin- uous measurements, find the probability that a random sample of 30 observations, from a normal population with variance a = 5, will have a sample variance of S that is (a) greater than 7.338; (b) between 2.766 and 7.883.

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ISBN:9781938168383
Author:Jay Abramson
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Chapter3: Functions
Section3.1: Functions And Function Notation
Problem 8TI: Using Figure 7, solve f(x)=1 .
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Solve problem 8.41 please answer part a and b
(b) P(4.601 > x >x) = 0.01, when v = 15;
(c) P(x <X² < 32.852) = 0.95, when v = 19.
8.41 Assuming that the sample variances are contin-
uous measurements, find the probability that a random
sample of 30 observations, from a normal population
with variance a = 5, will have a sample variance of
S that is
(a) greater than 7.338;
(b) between 2.766 and 7.883.
8.42 The scores on a placement test given to college
freshmen for the past five WiIN ArC approximately nor-
mally distributed with a mean ji =74 and a variance
S. Would you still consider a= 8 to be a valid
Transcribed Image Text:(b) P(4.601 > x >x) = 0.01, when v = 15; (c) P(x <X² < 32.852) = 0.95, when v = 19. 8.41 Assuming that the sample variances are contin- uous measurements, find the probability that a random sample of 30 observations, from a normal population with variance a = 5, will have a sample variance of S that is (a) greater than 7.338; (b) between 2.766 and 7.883. 8.42 The scores on a placement test given to college freshmen for the past five WiIN ArC approximately nor- mally distributed with a mean ji =74 and a variance S. Would you still consider a= 8 to be a valid
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