1. Data on educational attainment from a random sample of Census 1973 and 1998 is shown below. Each cell value corresponds to the column percentage. For example, in 1973, 61.18% of males and 67.35% of the total population had less than primary education.

Education	Male	Female	Total
Not in Universe	12.81	14.97	13.81
Less than Primary	61.18	74.53	67.35
Primary	21.97	8.98	15.96
Secondary	2.34	1.02	1.73
University	1.66	0.49	1.12
Unknown	0.04	0.01	0.03
Note: Cell values show column percentages Sample size 200 from Census 1973

Education	Male	Female	Total
Not in Universe	14.55	15.15	14.84
Less than Primary	53.94	67.21	60.30
Primary	26.24	14.85	20.78
Secondary	2.68	1.48	2.11
University	2.38	1.18	1.80
Unknown	0.20	0.13	0.17
Note: Cell values show column percentages Sample size 200 from Census 1998

Set up hypotheses to test whether the proportion pof the population with Primary education changed between 1973 and 1998.

Check if it is reasonable to model the difference in Primary educated citizens using a normal distribution

Interpret the p-value and determine the outcome of the hypothesis test