The mean amount of money that a family of four will spend at Kings Island, including the food and souvenirs, is $130 with a standard deviation of $12. Assume that this distribution is normal.
- Find the probability that a particular family of four selected at random spends between $150 and $200?
- What is the probability that the family spends less than $140?
- What is the probability that the family spends more than $170?
- What is the probability that the family spends between $130 and $190? (Be able to draw a graph to illustrate your results)
- Find the cost that represents the 50th percentile.
- Find the cost that represents the 90th percentile.
- 5% of the families spend below what value?
- The top 5% of the families spend above what value?
- Between what two values will the middle 50% of the families spend?
- What percent of the families spend at least $120?