Question:
Suppose an advertising agency is conducting a survey concerning the effectiveness of commercials during the Super Bowl. If 30% of people watch the Super Bowl, and if the agency contacts 150 people what is the probability that at least 35% people that watched the game?
Suppose that an individual stock's return is normally distributed with a mean of 10% and a standard deviation of 8%. What is the probability that the stock's return will be at least 16%?
In the past, the value of houses a local realtor has sold is normally distributed with a mean of $252,000 with a standard deviation of $55,000. How much does a house have to sell for so that the house is in the top 2% of highest selling houses for the realtor?
The amount of gas a local gas station sells is random. The following describes the distribution of gasoline sales in a given day. There is a probability of 0.1 that the station will sell 1100 gallons of gas; there is a probability of 0.29 that the station will sell 1400 gallons of gas; there is a probability of 0.21 that the station will sell 1600 gallons of gas; otherwise, the station sells 2200 gallons of gas. What is the expected number of gallons the station sells in a day?
In the past, the value of houses a local realtor has sold is normally distributed with a mean of $252,000 with a standard deviation of $55,000. How much does a house have to sell for so that the house is in the top 2% of highest selling houses for the realtor?