mat I get help with my practice exam question and explanation using excel

Katie likes to shop at VONS. For each trip to the retail store, Katie spends an average of 44 mins with a standard deviation of 10 mins. The length of time spent in the store is normally distributed. 1. Find the probability distribution that the shopper will be in the store for more than 30 minutes. 2. Find the probability distribution that the shopper will be in the store between 35 minutes and 40 minutes. 3. If 300 shoppers enter the store how many shoppers would you expect to be in the store for each time interval listed above (a.b). 4. Interpret the results from a-c