Which professionals would most likely use heavy equipment and specialized tools in their line of work?

electricians and civil drafters
repair workers and carpenters
stationary engineers and surveyors
interior designers and boiler operators

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends > a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

Gus needs to purée his soup while it's still in the pot. what is the best tool for him to use? a. potato masher b. immersion blender c. rotary mixer d. whisk

How has apple been able to sustain its competitive advantage in the smartphone industry? a. by reducing its network effects b. by targeting its new products and services toward laggards c. by driving the price for the end user to zero d. by regularly introducing incremental improvements in its products