Suppose that 20% of the fields in a given agricultural area are infested with the sweet potato whitefly. One hundred fields in this area are randomly selected, and 45 are found to be infested with whitefly. (a) Assuming that the experiment satisfies the conditions of the binomial experiment, do the data indicate that the proportion of infested fields is greater than expected? Use the p-value approach, and test using a 5% significance level. State the null and alternative hypotheses. O Ho: p = 0.2 versus H: p 0.2 O Ho: p = 0.2 versus Ha: p = 0.2 O Ho: p 0.2An experimenter has prepared a drug-dose level that he claims will induce sleep for at least 80% of people suffering from insomnia. After examining the dosage we feel that his claims regarding the effectiveness of his dosage are inflated. In an attempt to disprove his claim, we administer his prescribed dosage to 70 insomniacs and observe that 52 of them have had sleep induced by the drug dose. Is there enough evidence to refute his claim at the 5% level of significance? State the null and alternative hypotheses. O Ho: p = 0.80 versus Ha : p > 0.80 O Ho: p 0.80 O Ho: p = 0.80 versus Ha : p State your conclusion. O Ho is not rejected. There is sufficient evidence to refute the experimenter's claim. O Ho is rejected. There is insufficient evidence to refute the experimenter's claim. O Ho is rejected. There is sufficient evidence to refute the experimenter's claim. O Ho is not rejected. There is insufficient evidence to refute the experimenter's claim. You may need to use the appropriate appendix table or technology to answer this