The proportion, po, of foraging bumblebees not exposed to pesticides who bring very little pollen back to their nest is 0.4. A recent study of oraging bumblebees investigated the effect of exposure to a widely use aeonicotinoid pesticide called imidacloprid on pollen foraging rates. (Neonicotinoid pesticides are commonly used in agriculture due to thei ow toxicity in mammals.) Let p denote the proportion of foraging bumblebees exposed to imidacloprid who bring very little pollen back t cheir nest. A sample of 60 bumblebees were exposed to a low (field realistic) dose of imidacloprid; 39 of these bumblebees brought back very little pollen co their nest. Use these data to perform a test of the hypotheses Họ : p = 0.4, Hị : p > 0.4, by working through the following subparts of this part of the question. i) Calculate the observed value of the test statistic for this test. ii) Using the approximate normal null distribution of this test statistic, identify the rejection region of a test of the stated hypotheses using a 1% significance level.

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