Week 5 Assignment: Understanding Normal Distribution
Question
Given the plot of normal distributions A and B below, which of the following statements is true? Select all correct answers.
Question
Lexie averages 149 points per bowling game with a standard deviation of 14 points. Suppose Lexie’s points per bowling game are normally distributed. Let X= the number of points per bowling game. Then X∼N(149,14). If necessary, round to three decimal places.
Question
Suppose X∼N(12.5,1.5), and x=11. Find and interpret the z-score of the standardized normal random variable.
Question
Given the plot of normal distributions A and B below, which of the following statements is true? Select all correct answers.
Question
Given the plot of normal distributions A and B below, which of the following statements is true? Select all correct answers.
Question
Given the plot of normal distributions A and B below, which of the following statements is true? Select all correct answers.
Question
Rosetta averages 148 points per bowling game with a standard deviation of 14 points. Suppose Rosetta’s points per bowling game are normally distributed. Let X= the number of points per bowling game. Then X∼N(148,14).
If necessary, round to three decimal places.
Question
Suppose X∼N(16.5,0.5), and x=16. Find and interpret the z-score of the standardized normal random variable.
Solution
Question
Lexie averages 149 points per bowling game with a standard deviation of 14 points. Suppose Lexie’s points per bowling game are normally distributed. Let X= the number of points per bowling game. Then X∼N(149,14). If necessary, round to three decimal places.
Answer: Suppose Lexie scores 186 points in the game on Tuesday. The z-score when x = 186 is 2. 643. The mean is 149…
Question
Suppose X∼N(12.5,1.5), and x=11. Find and interpret the z-score of the standardized normal random variable.
Answer: The z-score when x=11 is negative -1 The mean is 2……………………………….please follow the link below to purchase the solution at $5
