Question 1 (2 points) In the US, smartphone use is around 80% for all adult Americans (Source: https://www.pewresearch.org/internet/fact- sheet/mobile/#:~:text=mobile%20revolution%20below.-, Mobile%20phone%20owne rship%20over%20time,smartphone%20ownership%20conducted%20in%202011). Let 1 represent adult
Question 1 (2 points) In the US, smartphone use is around 80% for all adult Americans (Source: https://www.pewresearch.org/internet/fact- sheet/mobile/#:~:text=mobile%20revolution%20below.-, Mobile%20phone%20owne rship%20over%20time,smartphone%20ownership%20conducted%20in%202011). Let 1 represent adult US Americans owning a smart phone and 0 represent those who do not own a smartphone. Select the appropriate box model representing smartphone ownership by adults in the US. OA) [o0 0 0 0 0 0 0 1 1] (B) [0 1] [oo11111111] OD) [000 01 1 1 1 1 1] OF [ 0 01] Question 2 (2 points) Suppose that we have a population in which out of every ten U.S. households, three have no dogs, 4 have 1 dog, 2 have 2 dogs, and 1 has three dogs. The population can MacBook Pro $ % > & Pk O- 4 5 6 8 R Y U PQuestion 2 (2 points) Suppose that we have a population in which out of every ten U.S. households, three have no dogs, 4 have 1 dog, 2 have 2 dogs, and 1 has three dogs. The population can thus be represented by a box model [0, 0, 0, 1, 1, 1, 1, 2, 2, 3]. The average number, u, of dogs per household then is 1.1 dogs with a standard deviation, o, of 0.94. Suppose we took a sample of 200 U.S. households. Assume a normal distribution. For this sample sum, what will the expected value and standard error be? O A) EV=220, SE=13.2936 B) EV=200, SE=26.781 OC) EV=220, SE=3.6459 ( D) EV=100, SE=126.781 O E) EV=200, SE=3.6459
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