can you help me out please

Problem: I The weekly income of a sample of 60 par time employees of a fast-food restaurant chaing wa organized into the following frequency distribution. (10 marks) Weekly Incomes Number of employees $100 up to $ 150 15 150 up to 200 9 200 up to 250 20 250 up to 300 18 300 up to 350 350 up to 400 Compute the standard deviation b) Compute the variance C) Compute the range d) Compute the mean, mode and median Problem II: Ato Furtuna and Wro Almaz are newly married couples; they wanted to have 3 children marks) i) List the sample space out comes ii) Find the probability that a) All the three children will have same gender b) Exactly two of the three children will be boys c) Exactly one of the three children will be boy d) None of the three children will be a boy e) At most one girly. Direction II : Choose the best answer from the given alternative and put your choice on the space provided. (2 marks each) 1. One of the following is not among the essential elements of a statistics? A. Statistics are numerically expressed B. Statistics are aggregate of facts C. Statistics collections are haphazard D. Statistics are affected by multiplicity of causes 2. Which statistical element must be come first? A. Analysis B. Interpretation C. Organization D. None 3. A sample has to encompass A. Representativeness B. Insufficient C. Heterogenty A and C