Inferential Statistics: Sampling Distribution of the Mean & the Central Limit Theorem

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Question: can someone please answer this correctly and show their work thanks.
1. The distribution of the amount of money students spend on books for a term is slightly right-skewed, with a mean of $400 and a standard deviation of $80.a) If a student is selected at random, what is the probability that this student spends more than $425 on books?b) In a simple random sample of 100 undergraduate students, what is the expected mean amount spent on books?c) If a simple random sample of 100 undergraduates is selected, what is the probability that these students spend more than $425 on books?
 
2. During the last student elections, 45% of students voted for the democratic student party. A simple random sample of students is to be selected. If 12 students are selected, what is the distribution of students in the sample who voted for the democratic student party? If 12 students are selected, what is the probability than more than 7 students in the sample voted for the democratic student party? If 120 students are selected, what is the approximate distribution of th...

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