It is known that the distributions life spans of iPhanes and Android phones are both skewed to the right. Apple iPhones (P) have a life span distribution with a mean of 15 months and a standard deviation of 4.2 months. The distribution of life spans of Android phones (A) has a mean of 13.4 months and a standard deviation of 3.7 months Suppose we select an SRS of 35 iPhones and a second sample of 40 Android phones. What is the probability that the sample mean lifespan for the Android is greater than the sample mean lifespan for the iPhone? O a 0.029 Ob 0.041 Oc 0.959 0.971 0.050

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It is known that the distributions life spans of iPhones and Android phones are both skewed
to the right. Apple iPhones (P) have a life span distribution with a mean of 15 months and
a standard deviation of 4.2 months. The distribution of life spans of Android phones (A) has
a mean of 13.4 months and a standard deviation of 3.7 months. Suppose we select an SRS of
35 iPhones and a second sample of 40 Android phones. What is the probability that the sample
mean lifespan for the Android is greater than the sample mean lifespan for the iPhone?
O a
0.029
O b
Oc
0.041
0.959
0.971
0.050
Transcribed Image Text:It is known that the distributions life spans of iPhones and Android phones are both skewed to the right. Apple iPhones (P) have a life span distribution with a mean of 15 months and a standard deviation of 4.2 months. The distribution of life spans of Android phones (A) has a mean of 13.4 months and a standard deviation of 3.7 months. Suppose we select an SRS of 35 iPhones and a second sample of 40 Android phones. What is the probability that the sample mean lifespan for the Android is greater than the sample mean lifespan for the iPhone? O a 0.029 O b Oc 0.041 0.959 0.971 0.050
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