can you please help and if possible can you please send me a screenshot of the excel work so i can understand more.. thank you for your time

In 1955. Wechsler proposed to measure the IQ (Intelligence Quotient} of adults using two scales: verbal skills and non-verbal skills. We compare the overall score of the person tested with the distribution of scores obtained by a representative sample of the population of a given age. whose performances follow a normal distribution having for mean 100 and standard deviation 15. 1) What percentage of people that have an IQ below 30? 2) What is the probability of getting : i. an IQ between 100 and 110 ? ii. an IQ between 90 and 100 ? iii. an IQ between 105 and 110 ? 3) Below which lets are two-thirds of individuals? 4) What is the minimum IQ required to be part of the top 5% of individuals