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Complete the two-way frequency table below, which shows the relationship between adults' gender and whether these adults buy a truck or a car for their first new vehicle. From a sample of 94 adults, the following data are collected:
 

              Truck   Car   Total

Female    9         36

Male        18       31

Total                             94



What is the probability (rounded to the nearest whole percent) that an adult will buy a car, given that she is a female? Are the events being female and buying a car independent

 

A 38%; they are dependent

B 80%; they are independent

C 54%; they are independent

D 80%; they are dependent

hay24  Apr 12, 2018
 #1
avatar+549 
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              Truck   Car   Total

Female    9         36     45

Male        18       31     49

Total        27       67     94

 

 

winkwinkwink

lynx7  Apr 12, 2018
 #2
avatar+374 
+3

(36/45)*100=80%

D 80%; they are dependent

 

smileysmileysmiley

qualitystreet  Apr 12, 2018
edited by qualitystreet  Apr 12, 2018

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