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Author Question: A local consumer reporter wants to compare the average costs of grocery items purchased at three ... (Read 135 times)

littleanan

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on: Feb 14, 2020
A local consumer reporter wants to compare the average costs of grocery items purchased at three different supermarkets, A, B, and C. Prices (in dollars) were recorded for a sample of 60 randomly selected grocery items at each of the three supermarkets. In order to reduce item-to-item variation, the prices were recorded for each item on the same day at each supermarket.

The results of the ANOVA are summarized in the following table.

SourcedfAnova SSMean SquareF ValuePr > F
Supermkt22.64126781.320639939.230.0001
Item59215.59493113.6541514108.540.0001
Error1183.97253220.0336655
Corrected Total179222.2087311

Based on the p-value of the test, make the proper conclusion.
◦ No conclusions can be drawn from the given information.
◦ There is sufficient evidence (at α = .01) to indicate differences among the mean prices of grocery items at the three supermarkets.
◦ There is sufficient evidence (at α = .01) to indicate that the mean prices of grocery items at the three supermarkets are identical.
◦ There is insufficient evidence (at α = .01) to indicate differences among the mean prices of grocery items at the three supermarkets.
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by littleanan on Feb 14, 2020

ebe

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Reply #1 on: Feb 14, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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littleanan

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Reply 2 on: Feb 14, 2020
:D TYSM

triiciiaa

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Reply 3 on: Yesterday
Excellent

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