Find the Critical Values and Determine the Appropriate Distribution
Do one of the following as appropriate:
a) Find the critical value t (alpha/2)
b) Find the critical value z (alpha/2)
c) State that neither the normal nor the t distribution applies.
Problem: 95%; n= 40; sigma is unknown; population appears to be skewed.
(See attachment for complete question and symbols that did not come through above)
If u look up 5% on the two tail with 39 degrees of freedom=401,
you get: 2.02.
This mean Probability(2.02<=t<=2.02)=0.95
b) Find the critical value z(alpha/2)
5% critical value ...
Solution Summary
The solution is comprised of an explanation for finding critical values for t and z distributions and identifies why neither distribution may be appropriate.
See attached file for full problem.
711. Do one of the following, as appropriate.
(a) findthecritical value
(b) findthecritical value
(c) State that neither the normal nor the t distribution applies.
Confidence level 90%; n = 16; o is known; population appears to be very skewed.
Findthecriticalvalues:
a.
Please help with the following problem.
Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
a. H0: m = 25 and Ha: m ¹ 25, a = 0.10
b. H0: m £ 32 and Ha: m > 32, a = 0.01
c. H0: m ³ 13 and
Do one of the following as appropriate:
a) Findthecritical value t
b) Findthecritical value z
c) State that neither the normal nor the t distribution applies.
Problem: 90%; n= 12; is 24; population appears to be very skewed.
(see attachment for complete questi
Question: Findthe test statistic andcritical value. Also use the chisquare distribution to find limits containing the pvalue andthen determine whether there is sufficient evidence to support the given alternative hypothesis.
Precipitation amounts:
 standard deviation of all values in a population does not equal 0.25

Use the tdistribution table to findthecritical value(s) for the indicated alternative hypothesis, level of significance ?, and sample sizes n? and n?. Assume that the samples are independent, normal, and random.
H?: µ? < µ?, ? = 0.05, n? = 14, n? = 13
(a) Findthecritical value(s) assuming the population variances
Please see the attached file.
1. What is theappropriatecritical value for each of the following confidence levels and sample sizes? (Remember that in regard to confidence level this implies twotails)
(a) Critical zvalue for an 85% confidence level for sample of size n = 36:
(b) Critical tvalue for
Identifying H0and Hr in ex 512 , examine the given statement , then express the null hypothesis H0 and alternative hypothesis H1 in symbolic form.
6. The mean IQ of statistics students is at least 110.
8. The percentage of men who watch golf on tv is not 70%, as is claimed by the Madison Advertising Company.
Finding C
a) What is the difference between a normal distributionand a standard normal distribution?
b) What is the purpose of using a standard normal distribution instead of the normal distribution?
c) Please cite one example of how the standard normal distribution is used, including the Zvalues for your example.
d) If you
Use the tdistribution table to findthecritical value(s) for the indicated alternative hypothesis, level of significance ?, and sample sizes n? and n?. Assume that the samples are independent, normal, and random. Answer parts (a) and (b).
H?: µ? ? µ?, ? = 0.10, n? = 14, n? = 13
(a) Findthecritical value(s) assuming the