In a study conducted to investigate browsing activity by shoppers, each shopper was initially classified as a nonbrowser, light browser, or heavy browser. For each shopper, the study obtained a measure to determine how comfortable the shopper was in a store. Higher scores indicated greater comfort. Suppose the following data were collected.

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In a study conducted to investigate browsing activity by shoppers, each shopper was initially classified as a nonbrowser, light browser, or heavy browser. For each shopper, the study obtained a measure to determine how comfortable the
shopper was in a store. Higher scores indicated greater comfort. Suppose the following data were collected.
Light
Heavy
Nonbrowser
Browser
Browser
4
5
5
7
3
4
7
3
7
4
4
4
6
6
4
7
(a) Use a = 0.05 to test for differences among comfort levels for the three types of browsers.
State the null and alternative hypotheses.
O Ho: HNB = HLB = HHB
H3: HNB + HLB + HHB
O Ho: HNB * HLB * HHB
Ha: HNB = HLB = HHB
O Ho: HNB = HLB = HHB
H: Not all the population means are equal.
O Ho: Not all the population means are equal.
H3: HNB = HLB = HHB
O Ho: At least two of the population means are equal.
H: At least two of the population means are different.
Transcribed Image Text:In a study conducted to investigate browsing activity by shoppers, each shopper was initially classified as a nonbrowser, light browser, or heavy browser. For each shopper, the study obtained a measure to determine how comfortable the shopper was in a store. Higher scores indicated greater comfort. Suppose the following data were collected. Light Heavy Nonbrowser Browser Browser 4 5 5 7 3 4 7 3 7 4 4 4 6 6 4 7 (a) Use a = 0.05 to test for differences among comfort levels for the three types of browsers. State the null and alternative hypotheses. O Ho: HNB = HLB = HHB H3: HNB + HLB + HHB O Ho: HNB * HLB * HHB Ha: HNB = HLB = HHB O Ho: HNB = HLB = HHB H: Not all the population means are equal. O Ho: Not all the population means are equal. H3: HNB = HLB = HHB O Ho: At least two of the population means are equal. H: At least two of the population means are different.
O Ho: HNB = HHLB = HHB
H3: HNB + HLB # HHB
O Ho: HNB + HLB # HHB
Ha: HNB = HLB = HHB
O Ho: HNB = HLB = HHB
H3: Not all the population means are equal.
O Ho: Not all the population means are equal.
H3: HNB = HLB = HHB
O Ho: At least two of the population means are equal.
H: At least two of the population means are different.
Find the value of the test statistic. (Round your answer to two decimal places.)
Find the p-value. (Round your answer to three decimal places.)
p-value =
State your conclusion.
O Do not reject H.. There is not sufficient evidence to conclude that the mean comfort scores are not all the same for the three groups.
O Reject H.. There is not sufficient evidence to conclude that the mean comfort scores are not all the same for the three groups.
O Do not reject H.. There is sufficient evidence to conclude that the mean comfort scores are not all the same for the three groups.
O Reject H.. There is sufficient evidence to conclude that the mean comfort scores are not all the same for the three groups.
Use Fisher's LSD procedure to compare the comfort levels of nonbrowsers and light browsers. Use a = 0.05.
Find the value of LSD. (Round your answer to two decimal places.)
LSD =
Find the absolute difference between sample means for the comfort levels of nonbrowsers and light browsers.
NB
- XB
What is your conclusion?
O There is a significant difference between the population means for the comfort levels of nonbrowsers and light browsers.
O There is not a significant difference between the population means for the comfort levels of nonbrowsers and light browsers.
Transcribed Image Text:O Ho: HNB = HHLB = HHB H3: HNB + HLB # HHB O Ho: HNB + HLB # HHB Ha: HNB = HLB = HHB O Ho: HNB = HLB = HHB H3: Not all the population means are equal. O Ho: Not all the population means are equal. H3: HNB = HLB = HHB O Ho: At least two of the population means are equal. H: At least two of the population means are different. Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to three decimal places.) p-value = State your conclusion. O Do not reject H.. There is not sufficient evidence to conclude that the mean comfort scores are not all the same for the three groups. O Reject H.. There is not sufficient evidence to conclude that the mean comfort scores are not all the same for the three groups. O Do not reject H.. There is sufficient evidence to conclude that the mean comfort scores are not all the same for the three groups. O Reject H.. There is sufficient evidence to conclude that the mean comfort scores are not all the same for the three groups. Use Fisher's LSD procedure to compare the comfort levels of nonbrowsers and light browsers. Use a = 0.05. Find the value of LSD. (Round your answer to two decimal places.) LSD = Find the absolute difference between sample means for the comfort levels of nonbrowsers and light browsers. NB - XB What is your conclusion? O There is a significant difference between the population means for the comfort levels of nonbrowsers and light browsers. O There is not a significant difference between the population means for the comfort levels of nonbrowsers and light browsers.
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