It is known that for = 0.1, z_/2= 1.645. Using this fact, solve the following problem. A sample of 99 comanies was taken to find out how many companies went bankrupt over the period of 10 years. The proportion of the companies which filed bankruptsy appeared to be 0.19 in the sample. What is the left boundary of 90% confidence interval to estimate the proportion of bankrupt companies over the period of 10 years? Assume that the conditions for the samling distribution to be approximately normal are satisfied.Round your answer to 4 decimals.