Identify each activity, a-f, as an observation (O), a hypoth­esis (H), an experiment (E),...

Identify each activity, a-f, as an observation (O), a hypoth­esis (H), an experiment (E), or a theory (T).

At a popular restaurant, where Chang is the head chef, the following occurred:

a. Chang determined that sales of the house salad had dropped.

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b. Chang decided that the house salad needed a new dressing.

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c. In a taste test, Chang prepared four bowls of lettuce, each with a new dressing: sesame seed, olive oil and balsamic vinegar, creamy Italian, and blue cheese.

Customers rated the sesame seed dressing as the best.

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d. The tasters rated the sesame seed salad dressing as the favorite.

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e. After two weeks, Chang noted that the orders for the house salad with the new sesame seed dressing had doubled.

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f. Chang decided that the sesame seed dressing improved the sales of the house salad because the sesame seed dressing enhanced the taste.