Questions tagged 'Probability'
16 questions
Feb 12, 2025
I really need some help with this statistics probability question?
I need assistance with a statistics probability question. A GE lightbulb is designed to last for 1,200 hours. However, the actual average lifespan of these lightbulbs is only 1,185 hours, with a stand...
Feb 03, 2025
How would you solve this stat problem without the calculator?
Hi, my teacher only teaches us how to solve problems using a calculator, but I want to learn how to solve this one by hand. I used the normal cumulative distribution function (CDF) for this question:...
Jan 27, 2025
Me ! 1. the average cost per ounce for glass cleaner is 7.7 cents with a standard deviation of 2.5 cents. what is the z-score of glass
The average cost per ounce for glass cleaner is 7.7 cents, with a standard deviation of 2.5 cents. What is the z-score for glass cleaner with a cost of 10.1 cents per ounce? a. 0.96 b. 1.31 c. 1.94 d....
Hemophilia is a sex-linked, recessive trait. Which of the following describes the probability of hemophilia in the offspring of a
Hemophilia is a sex-linked, recessive trait. Which of the following statements accurately describes the probability of hemophilia in the offspring of a couple where one parent is a carrier of the hemo...
Help me please !, Which of the following describes a compound event?
Which of the following options describes a compound event? A. Getting tails on a coin toss and rolling a prime number on a die B. Rolling an odd number on a die C. Getting an even number on a spin D....
help with probability?
I need assistance with a probability problem related to a motorist's route that includes two intersections with traffic lights. The probability that the motorist must stop at the first signal is 0.4,...
Nov 21, 2024
In a company there are 7 executives: 4 women and 3 men.
A company has 7 executives: 4 women and 3 men. Three executives are to be selected to attend a management seminar. Calculate the probabilities for the following scenarios: a. All 3 selected executives...
Nov 10, 2024
How accurate are Vegas odds in sports betting?
How accurate are the odds set by Las Vegas in sports betting? Specifically, I am interested in understanding how these odds are calculated and how they reflect the actual probabilities of different ou...
Nov 03, 2024
Probability algebra 2 question?
The police department is monitoring distracted drivers and accidents. They have discovered that if a driver is distracted, there is a 30% chance of being involved in an accident. Conversely, if a driv...
A die is rolled 360 times. Find the standard deviation for the number of 3s that will be rolled.?
A die is rolled 360 times. What is the standard deviation of the number of times a 3 will be rolled?