A test consists of 15 multiple choice questions. Each question has one correct answer out of 4 possible responses. Suppose a student guesses when answering each of the questions. Let the random variable X be the number of questions that the student answers correctly out of the 15 questions. (round to two decimal places if needed) This is a binomial case what are the p and q are? p is Blank 1. Calculate the answer by read surrounding text. , and q is Blank 2. Calculate the answer by read surrounding text. Find probability that they guessed exactly 4 out of the 15 questions correctly? Blank 3. Calculate the answer by read surrounding text. Find the expected value and standard deviation for the random variable x ? The expected value is Blank 4. Calculate the answer by read surrounding text. and standard deviation is Blank 5. Calculate the answer by read surrounding text.
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.
A test consists of 15 multiple choice questions.
Each question has one correct answer out of 4 possible responses.
Suppose a student guesses when answering each of the questions.
Let the random variable X be the number of questions that the student answers correctly out of the 15 questions. (round to two decimal places if needed)
- This is a binomial case what are the p and q are?
p is Blank 1. Calculate the answer by read surrounding text. , and q is Blank 2. Calculate the answer by read surrounding text.
- Find probability that they guessed exactly 4 out of the 15 questions correctly? Blank 3. Calculate the answer by read surrounding text.
- Find the
expected value and standard deviation for the random variable x ?
The expected value is Blank 4. Calculate the answer by read surrounding text. and standard deviation is Blank 5. Calculate the answer by read surrounding text.
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