$52 for 4 hours of shoveling snow and $71.50 for 5.5 hours of shoveling snow. how long would she have to shovel snow to earn $39

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Identify the type of observational study described. a statistical analyst obtains data about ankle injuries by examining a hospital's records from the past 3 years. cross-sectional retrospective prospective

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi