Question

find the a=.05 critical value for the chi-square distribution with
8 degrees of freedom

Answer #1

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A)What is the critical value for a chi-square test with 12
degrees of freedom at the 5 percent level of significance?
B) If the chi-square test statistic were 18.549, what is your
conclusion regarding the null hypothesis?
C) What is your conclusion regarding the null hypothesis if the
chi-square value were 22.10?

Find the critical values for a 95% confidence interval using the
chi-square distribution with 15 degrees of freedom. Round the
answers to three decimal places.

(1) Consider a Chi-square distribution with degrees of freedom,
df =7 I What is the mean?; II. the standard deviation, for this
distribution?
(2) Consider a Chi-square distribution for a categorical
variable with 4 levels. I. What is the degrees of freedom for this
distribution? II. The chi-square test statistic was calculated to
be 8.012. What is the p-value for this distribution?

Suppose that X follows a chi-square distribution with m degrees
of freedom and
S=X+Y. Given that S follows a chi-square distribution with m+n
degrees of freedom, and
X and Y are independent, show that Y follows a chi-square
distribution with n degrees of
freedom.

For a chi-square goodness-of-fit test,
what is the number of degrees of freedom, if the number of
categories in the distribution is 9? ______________
what is the critical value for a 1% level of significance?
_____________

Use the given information to find the number of degrees of
freedom, the critical values chi Subscript Upper L Superscript 2
and chi Subscript Upper R Superscript 2, and the confidence
interval estimate of sigma. It is reasonable to assume that a
simple random sample has been selected from a population with a
normal distribution. Nicotine in menthol cigarettes 98%
confidence; nequals21, sequals0.28 mg. LOADING... Click the icon
to view the table of Chi-Square critical values. dfequals nothing
(Type a...

Suppose that χ2 follows a chi-square distribution with 6
degrees of freedom. Compute P(4≤χ2≤10). Round your answer to at
least three decimal places.
Suppose again that χ2 follows a chi-square distribution with 6
degrees of freedom. Find k such that P(χ2≥k)=0.05. Round your
answer to at least two decimal places.
Find the median of the chi-square distribution with 6 degrees
of freedom. Round your answer to at least two decimal places.
P(4≤χ2≤10)= ?
k=?
Median=?

Use the given information to find the number of degrees of
freedom, the critical values chi Subscript Upper L Superscript 2
and chi Subscript Upper R Superscript 2, and the confidence
interval estimate of sigma. It is reasonable to assume that a
simple random sample has been selected from a population with a
normal distribution.
Nicotine in menthol cigarettes 99% confidence; n=23, s=0.27 mg.
Use the given information to find the number of degrees of
freedom, the critical values chi...

Use the given information to find the number of degrees of
freedom, the critical values
chi Subscript Upper L Superscript 2χ2L
and
chi Subscript Upper R Superscript 2χ2R,
and the confidence interval estimate of
sigmaσ.
It is reasonable to assume that a simple random sample has been
selected from a population with a normal distribution.Nicotine in
menthol cigarettes
8080%
confidence;
nequals=2929,
sequals=0.250.25
mg.
LOADING...
Click the icon to view the table of Chi-Square critical
values.
df=
(Type a whole number.)

Let X1, ..., X65 are a random sample from
chi-square distribution with 14 degrees of freedom.
1. What is the exact distribution of
X1 + ... + X65? State the name and the value
of the parameter
2. What is the approximate distribution of
X1 + ... + X65? State the name and the value
of the parameter

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