Adri's Brazilian Coffee, Inc. is considering the possibility of opening a gourmet coffee shop in Tempe, Arizona. Previous research has indicated that its shops will be successful in cities of this size if the mean annual family income is above $70,000. It is also assumed that the standard deviation of income is $5,000 in Tempe, Arizona. A random sample of 36 people was obtained and the mean income was $72,300. What is the probability of finding an annual family income above or equal to $ 72,300?