86. A survey of 400 unemployed people was completed at a job fair. Each person was to categorize their job interests. The accompanying relative frequency distribution was constructed. a. Construct the corresponding frequency distribution. How many of these people designated that the computer and mathematical industry was their job interest? b. Construct a pie chart. 87. A hair stylist records the hair color of her 25 most recent appointments, classifying the color as blonde, brown, black, or red. Her data set is displayed next. a. Construct a frequency and relative frequency distribution of the hair color of the stylist's customers. b. Construct a pie chart. Which hair color is the most common among the stylist's customers? c. Create a bar chart to display the frequency distribution. How many customers had black hair?
86. A survey of 400 unemployed people was completed at a job fair. Each person was to categorize their job interests. The accompanying relative frequency distribution was constructed. a. Construct the corresponding frequency distribution. How many of these people designated that the computer and mathematical industry was their job interest? b. Construct a pie chart. 87. A hair stylist records the hair color of her 25 most recent appointments, classifying the color as blonde, brown, black, or red. Her data set is displayed next. a. Construct a frequency and relative frequency distribution of the hair color of the stylist's customers. b. Construct a pie chart. Which hair color is the most common among the stylist's customers? c. Create a bar chart to display the frequency distribution. How many customers had black hair?