Question 1205906
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Go to web-site https://stattrek.com/online-calculator/binomial.aspx


and use free of charge online calculator there, intended for common use.



This calculator has nice, simple and convenient interface, which serves for all listed options 
in your post, so even a beginner student can easily solve this assignment in parts  a),  b)  and  c).



Regarding part  d),  use the formula for binomial distribution

    
    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;expected value = n*p = 12*0.57 = 6.84.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<U>ANSWER</U>