Suppose we have two samples: sample 1 of size (n) 50 and sample 2 of size (n) 100. We wish to estimate the proportion of 60 months old children that have been fully vaccinated based on the National Immunisation program in the City of Whitehorse, Victoria. Sample 1 estimate (p) is 5/50 and sample 2 estimate of 10/100. Can we base this hypothesis test on the normal distribution? Question 11 options: a) Yes, we can use the normal distribution since the sample size is more than 30 observations. b) Yes, we can use the normal distribution since n(1-p) and n(1-p) are greater than 5 for both samples. c) No, we cannot use the normal distribution since np and n(1-p) are not greater than 5 in both samples. d) No, we cannot use the normal distribution since np and n(1-p) are not greater than 5 in sample 1