Question

adult Americans to determine how their lives have been affected by the use of wireless technology. 1609 randomly chosen residents of the USA, aged 18 and older, were contacted by telephone. The results were weighted to correct for unequal probability of selection. Based on this sample, it was estimated that 63% ofadult Americans have increased their communication with friends and family a lot. 13.(10 points). Dauring the period from March 21 to March 23,2014, the Gallop Co. conducted a survey of (A) Identify the sample (Circle exactly one answer). The sample is (1) 63% of adult Americans have increased their commiunication with friends and family a lot. () 1609 randomly chosen residents of the USA, aged 18 and older who were contacted by telephone. (II) All adult Americans. (IV) All adult Americans who have increased their communication with friends and family a lot (B) Identify the population. (Circle exactly one answer). The population is (1) 63% ofadult Americans have increased their communication with friends and family a lot. (1)1609 randomly chosen residents of the US.A, aged 18 and older who were contacted by telephone. (III) All adult Americans. (IV) All adult Americans who have increased their communication with friends and family a lot (C) Identify the statistic. (Circle exactly one answer). The statistic is: (1) 63% ofadult Americans have increased their communication with friends and family a lot. (I) 1609 randomly chosen residents of the USA, aged 18 and older who were contacted by telephone. (II) All adult Americans. (IV) All adult Americans who have increased their communication with friends and family a lot. 10

Answer 1

Answer 13

(A) Sample is the part of population that we use for the analysis. In this case, population is adult Americans and we took out 1609 residents of USA. So, sample is 1609 USA residents aged 18 and older and were contacted by telephone

option (II) is correct

(B) Population is the entire data set from which we select our sample data. In this case, we have chosen 1609 USA residents who were aged 18 and older and contacted by telephone out of all adult Americans.

So, population is adult Americans

option (III)

(C) statistic is the quantity which tells us about the sample data, i.e. it is the mathematical information about the sample data. We are provided that 63% of selected Americans in the sample data have increased their communication with friends and family a lot

So, statistic is 63%

Option (I)