Josiah Allen

Josiah Allen

University of Alabama at Birmingham

Statistics teacher | Verified Expert

I earned my degree in Statistics from the University of Alabama at Birmingham, where I developed a strong foundation in data analysis and quantitative reasoning. I have a passion for teaching and helping students understand complex statistical concepts. With my academic background and teaching experience, I am equipped to provide clear explanations and effective guidance in Statistics and related subjects. I am committed to helping students succeed and reach their academic goals.


  • How do you find the mean, median and mode of 1, 2, 3, 4, 5, 6, 7, 8, 9?
  • With a fair dice what is the probability of rolling a 1?
  • Let #X# be a binomial random variable with #p=0.6# and #n=10#. What is # P(X ≤ 2) #?
  • According to the following results, what is the probability that a person taking this drug will experience a rise in blood pressure?
  • What is the probability distribution of rolling a single die?
  • X. : 1. 3. 6. 7 P(X) : 0.35. Y. 0.15. 0.2 Find the value of y ? Find the mean (expected value ) ? Find the standard deviation ?
  • Let the random variable X denote the number of girls in a five-child family. If the probability of a female birth is 0.5, what are the probabilities of having 0, 1, 2, 3, 4, and 5 girls?
  • One day your teacher surprised you with a 22-question multiple-choice quiz. Each question has 4 possible answers, only one of which is correct. What is the probability that you will guess at most 3 correctly?
  • When considering a competitive market for apartments in a city. What would be the effect on the equilibrium price and output after the following changes (other things being held constant):?
  • Tabitha and Paul are in a video game room that consists of 10 games. If they only have enough money to play 6 games, how many ways can they play each of the 6 games once?
  • What are the mean, median, and mode of the following numbers?: 42, 19, 36, 9, 42, 17, 3, 6, 9, 42, 11, 22, 16, and 14
  • What is the z-score of sample X, if #n = 54, mu= 12, St. Dev. =30, and mu_X =11#?
  • What is the z-score of sample X, if #n = 54, mu= 37, St. Dev. =30, and mu_X =42#?
  • In a local college, 20% of the math majors are women. Ten math majors are chosen at random. What is the probability that exactly 2 are women?
  • A bag contains 20 marbles: 4 red, 6 green, 5 white and 5 black. One marble is drawn. What is P(not picking a white)?
  • A test consists of 910 true or false questions. If the student guesses on each question, what is the standard deviation of the number of correct answers?
  • How do I know whether to use the Z-table or T-table?
  • How do you find the range and interquartile range for 2, 4, 8, 3, 2?
  • How many lines are determined by 8 points, no more than 3 of which are collinear? How many triangles are determined by the same points if no more than 4 are coplanar?
  • How can I create a histogram in Excel?