8.1 Smartphones and purchases. A Google research study asked 5013 smartphone users about how they used their phones. In response to a question about purchases, 2657 reported that they purchased an item after using their smartphone to search for information about the item.3

  1. (a) What is the sample size n for this survey?

  2. (b) In this setting, describe the population proportion p in a short sentence.

  3. (c) What is the value of the count X? Describe the count in a short sentence.

  4. (d) Find the sample proportion .