Question: Hi, I'm blocking at this exercise, can someone please help me solve it or explain what needs to be done, thank you! An appliance company

Hi, I'm blocking at this exercise, can someone please help me solve it or explain what needs to be done, thank you!

An appliance company offers insurance for breakage. Insurance costs $ 60 per contract. If the customer cancels their contract, the cost to the company is $ 300 ($ 360 fee - $ 60 received from the customer). According to statistics, the probability that a customer cancels their contract is 0.10. Y represents the company's total gain, when it insures 9 customers who bought new appliances.

Determine the standard deviation of Y.

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