Final answer:
The question lacks sufficient information to determine the exact number of models/styles a company should offer. Product variety often corresponds to market analysis, customer preferences, and competitor offerings. For example, matching a competitor's 1,000 styles could be a strategy.
Step-by-step explanation:
The student's question appears to be missing critical information needed to provide a definitive answer regarding how many models/styles a company is looking to offer to boost its sales of branded footwear. However, we can discuss the idea of product variety in the context of boosting sales. Offering a large variety of products can be an effective strategy for appealing to a wider customer base and can potentially lead to increased sales. It is common for companies to analyze market trends, customer preferences, and competition to decide on the number of models/styles to offer. For instance, if competitors offer around 1,000 styles, a company might want to match or exceed that number to stay competitive. However, without clearer context or additional data, it is not possible to provide a precise answer to the student's question.
Regarding questions d and e, they relate to probability and expected value, which are mathematical concepts used to anticipate the likelihood of certain outcomes. Specifically, expected value is used to predict an average outcome over a long period or many trials, which is relevant to determining the number of pages one would need to survey to find footwear advertisements.