Can anyone help me with this question?

3. Study shows that the teenagers spend on average $ 45. 5 per month on fast food. with a standard deviation of $5. 5. If their monthty Ware approximately normally distributed determine. a} The probability that their monthty spending is between $43.5 and $45.5 [3 marks] b} The spending that separates the top 34% of the spending from the bottom of the 55% of the spending. Round answer to one decimal place. [3 marks] o} It 35 teenagers are randomly selected, what is the probability that the mean of their monthly spending is greater than $45.5? [3 marks]