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RES 342 Final Exam # 54 Questions with ANSWERS # THE NEW UPDATED CORRECTED EXAM # 8th Set # BUY THIS

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1) What are the critical z-values for a two-tailed hypothesis test if the significant level = 0.01?
A. ± 1.96
B. ± 1.65
C. ± 2.58
D. ± 2.33
2) If the decision is to reject the null hypothesis of no difference between two population
parameters, z distribution at the .01 significant level, what is the correct statement of the alternate
hypothesis and rejection region?
A. µ1 ≠ µ2 ; z > 2.58 and z < negative 2.58
B. µ1 > µ2; z > 2.33
C. µ1 > µ2; z < negative 2.33
D. µ1 ≠ µ2 ; z > 1.96 and z < negative 1.96
3) The statement that determines if the null hypothesis is rejected or not is called the
A. decision rule
B. critical value
C. alternate hypothesis
D. test statistic
4) Doi Winery has two wine shops in the neighboring towns of Seamen and Batavia. The favorite
wine, as advertised, is Raspberry wine. A survey of 300 customers at the Seamen store revealed
that 225 individuals preferred the Raspberry wine while 290 out of 400 in Batavia preferred the
same flavor. To test the hypothesis that there was no difference in preferences in the two towns,
what is the alternate hypothesis?
A. µ1 < µ2
B. µ1 ≠ µ2
C. µ1 = µ2
D. µ1 > µ2
5) The Roman Senate has become concerned about the loyalty of the army in Gaul commanded
by Julius Caesar. They claim that, of the 80,000 men in the army, at least 28,000 are foreign
barbarians. Caesar believes there are fewer barbarians, so the Senate should not worry. He polls

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one legion of 1,000 men and finds that 340 of them are barbarians. What is the test statistic for
this hypothesis test?
A. (0.35-0.34)/100
B. (0.34-0.35)/0.063
C. (0.35-0.34)/0.2275
D. (0.34-0.35)/0.015
6) A statistician was setting up a hypothesis test with a level of significance dictated by upper
management. However, she was concerned that the test she wished to perform might have
unacceptable large possibilities of Type II error, ß. Which of the following would solve this
problem?
A. Convince upper management to use a larger p-value.
B. Convince upper management to use a smaller p-value.
C. Convince upper management to use a larger sample.
D. Convince upper management to reduce the level of significance of the test.
7) If the paired differences are normal in a test of mean differences, then the distribution used for
testing is the
A. normal distribution
B. Student t distribution
C. Chi-Square
D. F distribution
8) Thomas Delivery has a fleet of 24 trucks that are utilized for the companies; business. Electro-
Lite, a manufacturer of spark plugs, claims that its spark plugs have an average life in excess of
25,000 miles. The purchasing agent at Thomas Delivery purchased 24 sets and found that the
sample average life was 26,300 miles, the sample standard deviation was 1,500 miles, and the
computed test statistic was t = 3.423. Based on these findings, at the 0.05 level, is there enough
evidence to accept the manufacturer's claim?
A. Electro-Lite claims are not supported by the test results.
B. Electro-Lite claims are just an advertising promotion.
C. Electro-Lite claims cannot be supported or denied with the test results.
D. Electro-Lite claims are supported; the spark plugs do exceed the mean of 25,000 miles.

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1)?What are the critical z-values for a two-tailed hypothesis test if the significant level = 0.01? A.??? 1.96 B.??? 1.65 C.??? 2.58 D.??? 2.33 2)?If the decision is to reject the null hypothesis of no difference between two population parameters, z distribution at the .01 significant level, what is the correct statement of the alternate hypothesis and rejection region? A.???1 ? ?2 ; z > 2.58 and z < negative 2.58 B.???1 > ?2; z > 2.33 C.???1 > ?2; z < negative 2.33 D.???1 ? ?2 ; z > 1.96 and z < negative 1.96 3)?The statement that determines if the null hypothesis is rejected or not is called the A.??decision rule B.??critical value C.??alternate hypothesis D.??test statistic 4)?Doi Winery has two wine shops in the neighboring towns of Seamen and Batavia. The favorite wine, as advertised, is Raspberry wine. A survey of 300 customers at the Seamen store revealed that 225 individuals preferred the Raspberry wine while 290 out of 400 in Batavia preferred the same flavor. To test the hypothesis that there was no difference in preferences in the two towns, what is the alternate hypothesis? A.???1 < ?2 B.???1 ? ?2 C.???1 = ?2 D.???1 > ?2 5)?The Roman Senate has become concerned about the loyalty of the army in Gaul commanded by Julius Caesar. They claim that, of the 80,000 men in the army, at least 28,000 are foreign barbarians. Caesar believes there are fewer barbarians, so the Senate should not worry. He polls one legion of 1,000 men and fi ...
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