7) USA Today reported that about 47% of the general consumer population in the United States...
7) USA Today reported that about 47% of the general consumer population in the United States is loyal to the automobile manufacturer of their choice. Suppose Chevrolet did a study of a random sample of 1006 Chevrolet owners and found that 490 said they would buy another Chevrolet. Does this indicate that the population proportion of consumers loyal to Chevrolet is more than 47%? Use ? = 0.05.
a) state the hypothesis for this test.
b) state the p-value for this test
c) state your conclusion for this test in the context of the problem statement.
d) give 95% confidence interval for the properties of customers loyal to Chevrolet.
Homework Answers
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7) USA Today reported that about 47% of the general
consumer population in the United States...
reported that about 47% ofthe general consumer population in the United States is loyal to the...
reported that about 47% ofthe general consumer population in the United States is loyal to the automobile sahathcy would buy another Chevrolet. Test the claim by Chevrolet that the population proportion of 4 USAT d sample of 1006 Chevrolet owners and found manufacturer of their choice. Suppose that Chevrolet did a study of a randonm consumers loyal to its product is more than 47%. Use ax-005. (a) State the null (Ho) and alternate (HA) hypotheses. (b) Check the assumptions. (c)...
USA Today reported that about 47% of the general consumer population in the United States is...
USA Today reported that about 47% of the general consumer population in the United States is loyal to the automobile manufacturer of their choice. Suppose Chevrolet did a study of a random sample of 987 Chevrolet owners and found that 494 said they would buy another Chevrolet. Does this indicate that the population proportion of consumers loyal to the car company is more than 47%? Use α = 0.01. Solve the problem using both the traditional method and the P-value...
USA Today reported that about 47% of the general population in the United States is loyal...
USA Today reported that about 47% of the general population in the United States is loyal to the automobile study of a random sample of 1002 Chevrolet owners and found that 489 said they would buy another Chevrolet. Does this indicate that the population proportion of consumers loyal to Chevrolet is more than 47%? Use α = 0.01 (a) What is the level of significance? OHo: p-0.47; H,: p 0.47 O Ho: p-0.47; H,: p> 0.47 O Ho: p >...
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fact, about 24% of the population claim blue as their favorite
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reported that about 47% ofthe general consumer population in the United States is loyal to the automobile sahathcy would buy another Chevrolet. Test the claim by Chevrolet that the population proportion of 4 USAT d sample of 1006 Chevrolet owners and found manufacturer of their choice. Suppose that Chevrolet did a study of a randonm consumers loyal to its product is more than 47%. Use ax-005. (a) State the null (Ho) and alternate (HA) hypotheses. (b) Check the assumptions. (c)...
USA Today reported that about 47% of the general population in the United States is loyal to the automobile study of a random sample of 1002 Chevrolet owners and found that 489 said they would buy another Chevrolet. Does this indicate that the population proportion of consumers loyal to Chevrolet is more than 47%? Use α = 0.01 (a) What is the level of significance? OHo: p-0.47; H,: p 0.47 O Ho: p-0.47; H,: p> 0.47 O Ho: p >...
The U.S. Department of Transportation, National Highway
Traffic Safety Administration, reported that 77% of all fatally
injured automobile drivers were intoxicated. A random sample of 28
records of automobile driver fatalities in Kit Carson County,
Colorado, showed that 14 involved an intoxicated driver. Do these
data indicate that the population proportion of driver fatalities
related to alcohol is less than 77% in Kit Carson County? Use α =
0.01. Solve the problem using both the traditional method and the
P-value...
What is your favorite color? A large survey of countries,
including the United States, China, Russia, France, Turkey, Kenya,
and others, indicated that most people prefer the color blue. In
fact, about 24% of the population claim blue as their favorite
color.† Suppose a random sample of n = 54 college students
were surveyed and r = 10 of them said that blue is their
favorite color. Does this information imply that the color
preference of all college students is...
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