In order to determine the public opinion for converting an industrial area into a public park a poll has been conducted. 32 out of 40 people support the park. (a) Based on this sample construct a 88% confidence interval for the support. b) If the true public support is 90%, how would you explain the result obtained from the confidence interval? Explain in relation to the confidence level. =) What sample size is needed to obtain an 88% confidence interval such that half the width is 0.047
