Hi, can someone please help me with these business statistics questions??

I'm so confused, please reply asap!

Thank you :)

Question 7 Not yet saved Australians aged between 16 to 64 years have been relying more on digital and social media in every aspect of their daily lives during last year. A researcher found that the average daily time spend by Australians aged between 16 to 64 years on the Internet is normally distributed with a mean of 3.95 hours and a standard deviation of 20.88 minutes. Marked out of 8.00 1. (1 mark) What is the probability that a randomly selected Australian between 16 to 64 years spends less than 4.12 hours per day using the Internet? (4dp) P Flag question 2. (2 marks) What is the probability that a randomly selected Australian between 16 to 64 years spends more than 3.90 hours per day using the Internet? (4dp) 3. (2 marks) What is the probability that a randomly selected Australian between 16 to 64 years spends between 3.78 and 4.26 hours per day using the Internet? (4dp) 4. (1 mark) If the hours spent using the Internet for an Australian between 16 to 64 years was on the 66th percentile, how many hours per day would s/he spend using the Internet? (2dp) hours 5. (2 marks) In a sample of 41 Australians between 16 to 64 years, how many of them would be expected to spend more than 3.90 hours per day using the Internet? (2 dp)Question 8 Indicate the variables types for the listed variables below and briefly explain (one or two sentences) why you think that. Not yet saved Marked out of 1. Number of siblings a person has 5.00 2. Name of each sibling P Flag