PYTHON 7.1.6: Sandwich Sandwiches (codehs) In this exercise, write a function called sandwich which takes a 3 letter string. Your function should return the letters that are at the beginning and end of the string.

For example,

sandwich("pbj")
# => "pj"
sandwich("blt")
# => "bt"

Researchers measured the data speeds for a particular smartphone carrier at 50 airports. the highest speed measured was 78.1 mbps. the complete list of 50 data speeds has a mean of x overbarequals16.11 mbps and a standard deviation of sequals18.65 mbps. a. what is the difference between carrier's highest data speed and the mean of all 50 data speeds? b. how many standard deviations is that [the difference found in part (a)]? c. convert the carrier's highest data speed to a z score. d. if we consider data speeds that convert to z scores between minus2 and 2 to be neither significantly low nor significantly high, is the carrier's highest data speed significant? a. the difference is nothing mbps.

What machine listens for http requests to come in to a website’s domain? a. a router b. a browser c. a server d. a uniform resource locator

Leo is a recruitment executive for a large company. he has identified new labor resource requirements in both the marketing and production departments. what should be his first step in recruiting candidates for the positions? a. conduct background checks of candidates b. make job offers c. arrange interviews d. conduct reference checks e. place job ads on job sites