Answer:
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
