G Air traffic affects the migratory flights of a species of small goose called the Pacific Brant. When an aircraft flies over a flock of birds, it is called overflight. To estimate the proportion of overflights that affect Pacific Brant’s migratory flights, Wayne wants to collect a random sample of overflights. Wayne wants to estimate the actual proportion of Pacific Brant’s migratory flights that are affected by overflights. To calculate the required sample size, what value of p* should we use in the formula below to calculate a 90% confidence interval within 6.58 percentage points? Give exact answer as a decimal.