4.44 Nearsighted: It is believed that nearsightedness affects about 8% of all children. In a random sample of 194 children, 21 are nearsighted.(a) Construct hypotheses appropriate for the following question: do these data provide evidence that the 8% value is inaccurate?
(. )Ho: p = .08 Ha: p > .08
(. )Ho: p = .08 Ha: p ≠ .08
(. )Ho: p = .08 Ha: p < .08
(b) What proportion of children in this sample are nearsighted? __________ (round to four decimal places)(c) Given that the standard error of the sample proportion is 0.0195 and the point estimate follows a nearly normal distribution, calculate the test statistic (use the Z-statistic).Z = _____________ (please round to two decimal places)