In a psychological experiment, individuals are permitted to react to a stimulus in one of two ways, say, A or B. The experimenter wishes to estimate the proportion p of persons exhibiting reaction A. How many persons should be included in the experiment to be 90% confident that the error of estimation is within 0.07 if the experimenter knows that p is about 0.3? Round your answer to the next integer. n =

therefore the value to be concluded is:

 n = 632

Step-by-step explanation:

According to the exercise, we have a scientist study two types of reactions, and we search through the integer n, an answer to the number of people to include in the experiment, with 90% confidence of error of 0.07 when the experimenter knows that p is 0.3, what would be the value?

for this we obtain the following data

E = 0.03, p = 0.3

a = 0.1, Z (0.05) = 1.645 (see standard normal table)

we can deduce the following equation

n = (Z / E) ^ 2 * p * (1-p)

we replace the corresponding data

n = (1.645 / 0.03) ^ 2 * 0.3 * 0.7

we get the following result

n = 631.4058

therefore the value to be concluded is:

 n = 632

a. 74 degrees

step-by-step explanation:

because the lines through the side and the box in the corners shows that these are congruent triangles and since they are mirrored the 37 degrees is also mirrored so the answer is 37 * 2 which is 74.