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tenoi14
29.05.2020 •
Mathematics
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 =
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Ответ:
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
Ответ:
b = d -wn
Step-by-step explanation:
b = d -wn
Here, n is an independent variable and b is an dependent variable in an linear relation, and d and w are two constant values.
Hope it will find you well.