3. 8.49 For each situation below, determine (1) if the variable is discrete or continuous, and (2) if the information involves decision making under certainty or risk. 1. A friend in real estate tells you there is a 50-50 chance that the price per square foot for new houses will increase 9% during the next 6 months. 2. Your manager informs the staff there is a 25% chance that sales will decrease between 50 and 55 units next month. 3. Jane got paid yesterday, and $400 was taken out in income taxes. 4. There is a 20% chance of rain and a 30% chance of snow today.