Do Chi-square tests manually. Please specify 5 steps for both questions (1 point for each step / 5 points for each question). Q1) A child gets 20 heads and 10 tails in 30 trials of tossing a coin. Does this follow the simple probability of tossing a coin (1/2 head and 1/2 tail)? Q2) In a randomly selected sample, 30 individuals are obese and 70 individuals are non-obese. When we check their smoking status, 24 of obese individuals and 26 of non-obese individuals are current smokers, while others are non-smokers (6 in obese and 44 in non-obese groups). Does current smoking status vary by obese status in this sample (n=100)