A polling organization reported data from a survey of 2000
randomly selected Canadians who carry debit cards. Participants in
this survey were asked what they considered the minimum purchase
amount for which it would be acceptable to use a debit card.
Suppose that the sample mean and standard deviation were $9.19 and
$7.60, respectively. (These values are consistent with a histogram
of the sample data that appears in the report.)
Do these data provide convincing evidence that the mean minimum
purchase amount for which Canadians consider the use of a debit
card to be appropriate is less than $10? Carry out a hypothesis
test with a significance level of 0.01. (Use a statistical computer
package to calculate the P-value. Round your test
statistic to two decimal places and your P-value to three
decimal places.)
t | = | |
P-value | = |
State your conclusion.
Do not reject H0. We have convincing evidence that the mean minimum purchase amount for which Canadians consider it acceptable to use a debit card is less than $10.Reject H0. We do not have convincing evidence that the mean minimum purchase amount for which Canadians consider it acceptable to use a debit card is less than $10. Do not reject H0. We do not have convincing evidence that the mean minimum purchase amount for which Canadians consider it acceptable to use a debit card is less than $10.Reject H0. We have convincing evidence that the mean minimum purchase amount for which Canadians consider it acceptable to use a debit card is less than $10.
A polling organization reported data from a survey of 2000 randomly selected Canadians who carry debit...
A polling organization reported data from a survey of 2000 randomly selected Canadians who carry debit cards. Participants in this survey were asked what they considered the minimum purchase amount for which it would be acceptable to use a debit card. Suppose that the sample mean and standard deviation were $9.11 and $7.50, respectively. (These values are consistent with a histogram of the sample data that appears in the report.) Do these data provide convincing evidence that the mean minimum...
A polling organization reported data from a survey of 2000 randomly selected Canadians who carry debit cards. Participants in this survey were asked what they considered the minimum purchase amount for which it would be acceptable to use a debit card. Suppose that the sample mean and standard deviation were $9.11 and $7.50, respectively. (These values are consistent with a histogram of the sample data that appears in the report.) Do these data provide convincing evidence that the mean minimum...
In a study of computer use, 1000 randomly selected Canadian Internet users were asked how much time they spend using the Internet in a typical week. The mean of the sample observations was 12.8 hours. (a) The sample standard deviation was not reported, but suppose that it was 6 hours. Carry out a hypothesis test with a significance level of 0.05 to decide if there is convincing evidence that the mean time spent using the Internet by Canadians is greater...
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A magazine collects data each year on the price of a hamburger in a certain fast food restaurant in various countries around the world. The price of this hamburger for a sample of restaurants in Europe in January resulted in the following hamburger prices (after conversion to U.S. dollars). 5.13 4.96 4.08 4.63 5.27 4.68 4.19 4.93 5.16 5.56 5.34 4.60 The mean price of this hamburger in the U.S. in January was $4.62. For purposes of this exercise, assume...
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