Test Bank For Elementary Statistics Using Excel 7th Edition By Mario Triola (All Chapters, 100% Original Verified, A+ Grade)
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Elementary Statistics Using Excel 7e Mario Triola
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Elementary Statistics Using Excel 7e Mario Triola
This Is The Original 7th Edition Of The Test Bank From The Original Author All Other Files In The Market Are Fake/Old Editions. Other Sellers Have Changed The Old Edition Number To The New But The Test Bank Is An Old Edition.
Test Bank For Elementary Statistics Using Excel 7th Edition By Mario ...
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
pˆ − p 1)____________
1) Find the value of the test statistic z using z = .
pq
n
The claim is that the proportion of drowning deaths of children attributable to beaches is
more than 0.25, and the sample statistics include n = 696 drowning deaths of children with
30% of them attributable to beaches.
A) 3.05 B) –3.05 C) −2.88 D) 2.88
2) Use the given information to find the P-value. Also, use a 0.05 significance level and state the 2)____________
conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null
hypothesis). With H1 : p ≠ 3 5 , the test statistic is z = 0.78.
A) 0.2177; reject the null hypothesis
B) 0.4354; reject the null hypothesis
C) 0.4354; fail to reject the null hypothesis
D) 0.2177 fail to reject the null hypothesis
3) Solve the problem. For large numbers of degrees of freedom, the critical χ 2 values can be 3)___________
1
approximated as follows: χ 2 = ( z + 2k − 1 )2 , where k is the number of degrees of freedom
2
and z is the critical value. To find the lower critical value, the negative z-value is used, to find
the upper critical value, the positive z-value is used. Use this approximation to estimate the
critical value of χ 2 in a two-tailed hypothesis test with n = 104 and α = 0.10.
A) χ 2 ≈ 85.903 and χ 2 ≈ 122.735
B) χ 2 ≈ 81.186 and χ 2 ≈ 128.520
C) χ 2 ≈ 80.300 and χ 2 ≈ 127.406
D) χ 2 ≈ 84.992 and χ 2 ≈ 121.646
4) Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim. 4)___________
The principal of a middle school claims that test scores of the seventh-graders at his school
vary less than the test scores of the seventh-graders at a neighboring school, which have
variation described by σ = 14.7. Assuming that a hypothesis test of the claim has been
conducted and that the conclusion is to reject the null hypothesis, state the conclusion in
nontechnical terms.
A) There is sufficient evidence to support the claim that the standard deviation is greater
than 14.7.
B) There is sufficient evidence to support the claim that the standard deviation is less than
14.7.
C) There is not sufficient evidence to support the claim that the standard deviation is
greater than 14.7.
D) There is not sufficient evidence to support the claim that the standard deviation is less
than 14.7.
5) A hypothesis test is performed to test the claim that a population proportion is greater than 0.7. 5)__________
Find the probability of a type II error, β , given that the true value of the population proportion
is 0.72. The sample size is 50 and the significance level is 0.05.
A) 0.4129 B) 0.5754 C) 0.7123 D) 0.9706
,6) Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct 6)__________
symbol ( μ , p, σ ) for the indicated parameter. A psychologist claims that more than 5.8 percent
of the population suffers from professional problems due to extreme shyness. Use p, the true
percentage of the population that suffers from extreme shyness.
A) H 0 : p = 5.8% B) H 0 : p = 5.8%
H1 : p < 5.8% H1 : p ≤ 5.8%
C) H 0 : p = 5.8% D) H 0 : p < 5.8%
H1 : p > 5.8% H1 : p ≥ 5.8%
7) Use the given information to find the P-value. Also, use a 0.05 significance level and state the 7)__________
conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null
hypothesis). The test statistic in a right-tailed test is z = 0.52.
A) 0.6030; fail to reject the null hypothesis
B) 0.3015; reject the null hypothesis
C) 0.0195; reject the null hypothesis
D) 0.3015; fail to reject the null hypothesis
8) Find the critical value or values of χ 2 based on the given information. 8)__________
H1 : σ < 0.629
n = 19
α = 0.025
A) 8.231 B) 31.526 C) 7.015 D) 8.907
9) Use the given information to find the P-value. Also, use a 0.05 significance level and state the 9)__________
conclusion about the null hypothesis (reject the null hypothesis or fail to reject the null
hypothesis). With H1 : p > 0.554, the test statistic is z = 1.34.
A) 0.9099; fail to reject the null hypothesis
B) 0.0901; reject the null hypothesis
C) 0.0901; fail to reject the null hypothesis
D) 0.1802; reject the null hypothesis
10) Express the null hypothesis and the alternative hypothesis in symbolic form. Use the correct 10)__________
symbol ( μ , p, σ ) for the indicated parameter. An entomologist writes an article in a scientific
journal which claims that fewer than 16 in ten thousand male fireflies are unable to produce
light due to a genetic mutation. Use the parameter p, the true proportion of fireflies unable to
produce light.
A) H 0 : p = 0.0016 B) H 0 : p = 0.0016
H1 : p < 0.0016 H1 : p > 0.0016
C) H 0 : p > 0.0016 D) H 0 : p < 0.0016
H1 : p :≤ 0.0016 H1 : p ≥ 0.0016
, 11) Formulate the indicated conclusion in nontechnical terms. Be sure to address the original 11)__________
claim. Carter Motor Company claims that its new sedan, the Libra, will average better than 32
miles per gallon in the city. Assuming that a hypothesis test of the claim has been conducted
and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical
terms.
A) There is sufficient evidence to support the claim that the mean is greater than 32 miles
per gallon.
B) There is not sufficient evidence to support the claim that the mean is greater than 32
miles per gallon.
C) There is not sufficient evidence to support the claim that the mean is less than 32 miles
per gallon.
D) There is sufficient evidence to support the claim that the mean is less than 32 miles per
gallon.
12) Find the critical value or values of χ 2 based on the given information. 12)__________
H1 : σ < 0.14
n = 23
α = 0.10
A) 14.848 B) 30.813 C) −30.813 D) 14.042
13) A formal hypothesis test is to be conducted using the claim that the mean body temperature is 13)__________
equal to 98.6° F. What is the null hypothesis and how is it denoted?
A) H 0 : μ = 98.6° F B) H 0 : μ ≠ 98.6° F
C) H 0 : p = 98.6° F D) H 0 : p < 98.6° F
14) Express the original claim in symbolic form. 14)__________
Claim: 20% of adults smoke
A) p ≠ 0.2 B) p = 0.2 C) μ ≠ 0.2 D) μ = 0.2
15) Find the P-value in a test of the claim that the mean IQ score of acupuncturists is equal to 100, 15)__________
given that the test statistic is z = −2.00.
A) 0.0228 B) 0.955 C) 0.977 D) 0.0455
16) Which of the following is not a requirement for testing a claim about a population proportion? 16)__________
A) The sample observations are a simple random sample.
B) The conditions for a binomial distribution are satisfied.
C) The conditions np ≥ 5 and nq ≤ 5 are both satisfied.
D) All of the other statements are requirements for testing a claim about a population
proportion.
17) A Type I error is the mistake of ________________ when it is actually true. 17)__________
A) failing to reject the null hypothesis
B) failing to reject the alternative hypothesis
C) rejecting the null hypothesis
D) rejecting the alternative hypothesis
18) The ________________ is the probability of getting a test statistic at least as extreme as the 18)__________
one representing the sample data, assuming that the null hypothesis is true.
A) P-value B) sample proportion
C) critical value D) level of significance
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