Use computer software packages, such as minitab or excel, to solve this problem. the owner of showtime movie theaters, inc., would like to predict weekly gross revenue as a function of advertising expenditures. historical data for a sample of eight weeks follow. weekly television newspaper gross revenue advertising advertising ($1,000s) ($1,000s) ($1,000s) 97 5.0 1.5 90 2.0 2.0 95 4.0 1.5 92 2.5 2.5 105 3.0 3.3 94 3.5 2.3 94 2.5 4.2 97 3.0 2.5 a. develop an estimated regression equation with the amount of television advertising as the independent variable (to 1 decimal).

A-12.3 an american spy is deep undercover in the hostile country of phonemia. in order not to waste scarce resources, any time he wants to send a message back home, he removes all the punctuation from his message and converts all the letters to uppercase. so, for example, to send the message, “abort the plan! meet at the dark cabin.” he would transmit given such a string, s, of n uppercase letters, describe an efficient way of breaking it into a sequence of valid english words. you may assume that you have a function, valid(s), which can take a character string, s, and return true if and only if s is a valid english word. what is the running time of your algorithm, assuming each call to the function, valid, runs in o(1) time?