The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.21 minutes and a standard deviation of 1.90. Find the probability that a randomly selected individual will take less than 5 minutes to select a shoe purchase. Is this outcome unusual?
Probability is 0.045, which is unusual as it is less than 5% |
Probability is 0.954, which is usual as it is greater than 5% |
Probability is 0.045, which is usual as it is not less than 5% |
Probability is 0.954, which is unusual as it is greater than 5% |
The length of time a person takes to decide which shoes to purchase is normally distributed...
Question 12 pts The length of time a person takes to decide which shoes to purchase is normally distributed with a mean of 8.21 minutes and a standard deviation of 1.90. Find the probability that a randomly selected individual will take less than 6 minutes to select a shoe purchase. Is this outcome unusual? Group of answer choices Probability is 0.88, which is usual as it is greater than 5% Probability is 0.12, which is usual as it is not...
The time it takes a randomly selected rat to complete a maze is normally distributed with mean 1.5 minutes and standard deviation 0.35 minutes. (a) Find the probability that a randomly selected rat spends longer than 1.6 minutes to complete it. (b) We randomly take a sample of 100 rats. Find the probability that the average completion time for the sampled rats is smaller than 1.6 minutes. (c) We randomly take a sample of 4 rats. Find the probability that...
The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 21 minutes and a standard deviation of 7 minutes. Find the probability that a randomly selected athlete uses a stairclimber for (a) less than 16 minutes, (b) between 21 and 28 minutes, and (c) more than 30 minutes. (a) The probability that a randomly selected athlete uses a stairclimber for less than 16 minutes is Round to four decimal places as needed.)...
(4) The time required to complete a final exam in a particular college course is normally distributed with a mean of 75 minutes and a standard deviation of 15 minutes. Answer the following questions: (a) (for a randomly selected student) What is the probability of completing the exam in 1 hour or less? (4) (b) What is the probability a randomly selected student will complete the exam in more than 60 minutes but less than 75 minutes? (4b) (c) Assume...
1. The time needed to complete a final examination in a particular college course is normally distributed with a mean of 83 minutes and a standard deviation of 13 minutes. Answer the following questions. a. What is the probability of completing the exam in one hour or less (to 4 decimals)? b. What is the probability that a student will complete the exam in more than 60 minutes but less than 75 minutes (to 4 decimals)? 2. According to the...
bution The time required to fill a prescription at a local pharmacy is at is normally distributed with a mean of 10 minutes and a standard deviation of 2 minutes. a. What is the probability that a randomly selected customer experiences a wait-time of less than 5 minutes? b. Find the wait time that defines the upper 1 percent. bution The time required to fill a prescription at a local pharmacy is at is normally distributed with a mean of...
The time it takes for seed of a certain variety to germinate is normally distributed with a mean of 120 hours and a standard deviation of 20 hours. What is the probability that a randomly selected seed takes more than 130 hours to germinate? A.) 0.49 B.) 0.6915 C.) 0.3085 D.) .025 E.) 0.508 F.) 0 G.) 0.5
The amounts of time per workout an athlete uses a stairclimber are normally distributed, with a mean of 21 minutes and a standard deviation of 6 minutes. Find the probability that a randomly selected athlete uses a stairclimber for (a) less than 16 minutes, (b) between 21 and 28 minutes, and (c) more than 30 minutes.
The time it takes a person to wash the dishes is uniformly distributed between 7 minutes and 12 minutes. What is the probablity that a randomly selected event of washing dishes will take a person between 8 and 10 minutes? Round your answer accurate to two decimal places.
The average time it takes a group of young people to complete a The Children of Alcoholic Screening Test (CAST) is 48 minutes. The standard deviation is 7 minutes. Assume the variable is normally distributed. Find the probability that if 31 randomly selected youngsters complete the test, the mean time it takes the group to complete the test will be less than 28.4 minutes.