4) THE MEAN PRICE OF NEW TRUCKS AT A TRUCK

DEALERSHIP IS NORMALLY DISTRIBUTED WITH A

MEAN M= $138,500 AND ST. DEV = $8,300

IF A NEW TRUCK IS RANDOMLY SELECTED FIND

THE PROBABILITY THAT IT WILL COST

AMORE THAN $145,000

BNO MORE THAN $130,000

IF A SAMPLE OF 9 TRUCK IS TAKEN, FIND THE

PROBABILITY THAT THE MEAN WILL

COST LESS

TARD

$140,000