In which of the following cases may the taxpayer claim head of household filing status? a. the taxpayer is single and maintains a household that is the principal place of abode of her infant son. b. the taxpayer is single, maintains a household for herself, and maintains a separate household that is the principal place of abode of her dependent widowed mother. c. the taxpayer was married from january to october and lived with his spouse from january to may. from june 1 to december 31, the taxpayer maintained a household that was the principal place of abode of his married son and daughter-in-law, whom the taxpayer can claim as dependents. d. same as (c) except the taxpayer lived with his ex-spouse until august and maintained the household from september 1 to the end of the year.

2standard deviation a particular telephone number is used to receive both voice calls and fax messages. suppose that 25% of the incoming calls involve fax messages, and consider a sample of 25 incoming calls. (a) what is the expected number of calls among the 25 that involve a fax message?

Jennifer purchased a house in a brand new development in the outskirts of town. when her house was built, the nearest fire department was nearly 20 miles away. as her neighborhood developed, the density of the community called for a new fire department 1.5 miles away. what effect will the new fire station have on her homeowners insurance premium? a. a new fire department will be more demanding on local taxes. her annual premium will go up. b. the location of a fire department has no bearing on the value of her house. her annual premium will stay the same. c. the new fire department will reduce the risk of financial loss in her home. her annual premium should decrease. d. with a fire department so close (less than 5 miles), financial risk on jennifer’s home practically disappears. she will not need to pay insurance anymore.

Why is it easier for new entrants to get involved in radical innovations when compared to incumbent firms? a. unlike incumbent firms, new entrants do not have to face the high entry barriers, initially. b. new entrants are embedded in an innovation ecosystem, while incumbent firms are not. c. unlike incumbent firms, new entrants do not have formal organizational structures and processes. d. incumbent firms do not have the advantages of network effects that new entrants have.