To test H0: σ=2.2 versus H1: σ>2.2, a random sample of size n=17 is obtained from a population that is known to be normally distributed. Complete parts (a) through (d). (a) If the sample standard deviation is determined to be s=2.4, compute the test statistic. χ20=nothing (Round to three decimal places as needed.) (b) If the researcher decides to test this hypothesis at the
To test H0: σ=2.2 versus H1: σ>2.2, a random sample of size n=17 is obtained from a population that is known to be normally distributed. Complete parts (a) through (d). (a) If the sample standard deviation is determined to be s=2.4, compute the test statistic. χ20=nothing (Round to three decimal places as needed.) (b) If the researcher decides to test this hypothesis at the
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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To test
normally distributed. Complete parts (a) through (d).
H0: σ=2.2
versus
H1: σ>2.2,
a random sample of size
n=17
is obtained from a population that is known to be (a) If the sample standard deviation is determined to be
s=2.4,
compute the test statistic.χ20=nothing
(Round to three decimal places as needed.)(b) If the researcher decides to test this hypothesis at the
α=0.01
level of significance, determine the critical value.χ20.01=nothing
(Round to three decimal places as needed.)(c) Draw a chi-square distribution and depict the critical region.
(d) Will the researcher reject the null hypothesis?
Do not reject
H0
because
χ20<χ20.01.
Reject
H0
because
χ20>χ20.01.
Do not reject
H0
because
χ20>χ20.01.
Reject
H0
because
χ20<χ20.01.
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