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Essentials of Statistics Study Set 1
Quiz 6: Continuous Probability Distributions
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Question 61
Multiple Choice
Exhibit 6-3 Consider the continuous random variable X, which has a uniform distribution over the interval from 20 to 28. -Refer to Exhibit 6-3. The probability that X will take on a value of at least 26 is
Question 62
Multiple Choice
Exhibit 6-1 The assembly time for a product is uniformly distributed between 6 to 10 minutes. -Refer to Exhibit 6-1. The expected assembly time in minutes) is
Question 63
Multiple Choice
Exhibit 6-1 The assembly time for a product is uniformly distributed between 6 to 10 minutes. -Refer to Exhibit 6-1. The probability of assembling the product in less than 6 minutes is
Question 64
Multiple Choice
Z is a standard normal random variable. The P-1.5 ≤ Z ≤ 1.09) equals
Question 65
Multiple Choice
Given that Z is a standard normal random variable, what is the value of Z if the area between -Z and Z is 0.901?
Question 66
Multiple Choice
Exhibit 6-3 Consider the continuous random variable X, which has a uniform distribution over the interval from 20 to 28. -Refer to Exhibit 6-3. The probability density function has what value in the interval between 20 and 28?
Question 67
Multiple Choice
Given that Z is a standard normal random variable. What is the value of Z if the area to the left of Z is 0.9382?
Question 68
Multiple Choice
In a standard normal distribution the value of z
Question 69
Multiple Choice
Given that Z is a standard normal random variable, what is the value of Z if the area to the right of Z is 0.9834?
Question 70
Multiple Choice
Exhibit 6-1 The assembly time for a product is uniformly distributed between 6 to 10 minutes. -Refer to Exhibit 6-1. The probability of assembling the product in 7 minutes or more is
Question 71
Multiple Choice
Exhibit 6-1 The assembly time for a product is uniformly distributed between 6 to 10 minutes. -Refer to Exhibit 6-1. The probability density function has what value in the interval between 6 and 10?
Question 72
Multiple Choice
Exhibit 6-1 The assembly time for a product is uniformly distributed between 6 to 10 minutes. -Refer to Exhibit 6-1. The probability of assembling the product between 7 to 9 minutes is
Question 73
Multiple Choice
Exhibit 6-3 Consider the continuous random variable X, which has a uniform distribution over the interval from 20 to 28. -Refer to Exhibit 6-3. The probability that X will take on a value between 21 and 25 is
Question 74
Multiple Choice
Exhibit 6-2 The weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds. -Refer to Exhibit 6-2. What is the minimum weight of the middle 95% of the players?
Question 75
Multiple Choice
Given that Z is a standard normal random variable. What is the value of Z if the area to the right of Z is 0.1401?
Question 76
Multiple Choice
Exhibit 6-2 The weight of football players is normally distributed with a mean of 200 pounds and a standard deviation of 25 pounds. -Refer to Exhibit 6-2. What percent of players weigh between 180 and 220 pounds?