For Exercise 6.1, see page 289; for 6.2 and 6.3, see page 293; for 6.4, see page 294; for 6.5, see page 295; for 6.6 and 6.7, see page 297; and for 6.8, see page 298.

Question 6.1

6.1 Number of apps on a smartphone.

AppsFire is a service that shares the names of the apps on an iOS device with everyone else using the service. This, in a sense, creates an iOS device app recommendation system. Recently, the service drew a sample of 1000 AppsFire users and reported a median of 108 apps per device.2 State the population that this survey describes, the statistic, and some likely values from the population distribution.

6.1

Population: all AppsFire users. Statistic: . Likely values: answers will vary.