IQ is normally distributed with a mean of 100 and a standard deviation of 15. Suppose one individual is randomly chosen. Let X = IQ of an individual. A: Find the probability that the person has an IQ greater than 120.(Round your answer to four decimal places.) B: Mensa is an organization whose members have the top 2% of all IQs. Find the minimum IQ needed to qualify for the Mensa organization. Write the probability statement. P(X > x) =_______ and What is the minimum IQ? (Round your answer to the nearest whole number.) C: The middle 40% of IQs fall between what two values? Write the probability statement. P(x1 < X < x2) =____ and State the two values. (Round your answers to the nearest whole number.) x1 = x2 =
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
IQ is
A: Find the probability that the person has an IQ greater than 120.(Round your answer to four decimal places.)
B: Mensa is an organization whose members have the top 2% of all IQs. Find the minimum IQ needed to qualify for the Mensa organization. Write the probability statement. P(X > x) =_______ and What is the minimum IQ? (Round your answer to the nearest whole number.)
C: The middle 40% of IQs fall between what two values? Write the probability statement. P(x1 < X < x2) =____ and State the two values. (Round your answers to the nearest whole number.)
| x1 | = | |
| x2 | = |
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