A recent survey by the American automobile association showed that a family of two adults and two children on vacation in the United States will pay an average of 247 per day for food and lodging with a standard deviation of 60 per day. Assuming the data are normally distributed, if the family had a z-score of 1.5, what was their daily expense for food and lodging

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b

go and ask your mom to you

the answer is d

step-by-step explanation: