solved:In 31 days, a gas station gas sales mean is $38 and has a s

  

In 31 days, a gas station gas sales mean is $38 and has a standard… In 31 days,a gas station gas sales mean is $38 and has a standard deviation of $10. There were 955 sales transactions at its gas pumps in in 31 days(a) How many sales transactions in those 31 days were $50 or less?(b) If a sales transaction is $75 or higher at the gas station, a car wash certificate is given to the customer. How many certificates were given in those 31 days?(c) How much is the gas stations total gas sales revenue for the 31 days?MathStatistics and Probability STATISTIS 145