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Turbo-Brush is a new, high-speed electric toothbrush designed to remove persistent  plaque

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Turbo-Brush is a new, high-speed electric toothbrush designed to remove persistent 
plaque. The marketing research department has just completed a primary research study 
with 400 respondents and obtained the following data measuring purchase intent for the 
new product:
X f
Definitely would buy 5 85
Probably would buy 4 100
Might or might not buy 3 140 
Probably would not buy 2 50
Definitely would not buy 1 25
1. Determine the mean level of purchase intent. Describe the mean with both 
numerical and verbal cues. 
2. Determine the standard deviation. Explain what this number means. Given its size, 
is that good or bad? Explain.
3. What would you recommend to the marketing manager based on these two key 
figures?