A biologist has hypothesis that high concentrations of actinomycin D inhibit RNA synthesis in cells and thereby inhibit the production of protein. As experiment conducted to test this theory compared the RNA synthesis in cells treated with two concentrations of actinomycin D:0.6 and 0.7 micrograms per liter. cells treated with the lower concentration 0.6 of actinomycin D yield that 55 out of 70 developed normally whereas only 23out of 70 appeared to developed normally for the higher concentration 07. perform a formal hypothesis test to justify that

a. the rate of normal RNA synthesis is 10% lower for cells exposed to the higher concentration of actinomycin D.