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Hunter Aldridge

Hunter Aldridge

Seminole State College of Florida
Statistics

Statistics teacher | Tutor for 5 years

I earned my Statistics degree from Seminole State College of Florida. Equipped with a deep understanding of data analysis and interpretation, I'm here to guide you through the world of numbers. From probability theory to hypothesis testing, I'm committed to helping students grasp complex statistical concepts with clarity and confidence. Let's work together to unlock the mysteries of data and excel in your academic journey.

Questions

  • Is the F test used for testing the difference in two population variances always a one tailed test? Why or why not?
  • Suppose A and B are independent events. If #P(A) = .4# and #P(B) = .1#, what is #P(AnnB)#?
  • Consider a two-way table that summarizes age and ice cream preference. Of the children, 7 prefer vanilla, 12 prefer chocolate, and 3 prefer butter pecan. Of the adults, 10 prefer vanilla, 31 prefer chocolate, and 8 prefer butter pecan. What is the joint probability that a randomly selected person is a child who prefers chocolate?
  • What is the characteristic function of a normal distribution?
  • There is a normal distribution with min = 4, max = 16 and mean = 10. What is the standard deviation?
  • In the standard normal distribution, how do you find the values of z for the 75th, 80th, and 92nd percentiles?
  • If z is a standard normal random variable,what is the area between z = -1.20 and z = 1.40?
  • Assume that z-scores are normally distributed with a mean of 0 and a standard deviation of 1. If #P(-d < z < d)=0.4844#, how do you find #d#?
  • If a group of data has a mean of 9 and a standard deviation of 2.5, what is the interval that should contain at least 93.8% of the data?
  • A random sample of 40 part-time workers has a mean annual eamings of $3120 and a population standard deviation of $677. What is the 95% confidence interval for #mu#?
  • A bag contains 3 red, 5 yellow, and 7 purple marbles. What is the probability of drawing a purple marble followed by a red marble?
  • What is the mean, median, mode, and range of 5, 30, 35, 20, 5, 25, 20?
  • A spinner has equal sections numbered 1-8. If you spin the spinner once, what is the probability that you will not get a 5?
  • Of the 34 cars in a parking lot, 20 are green, 8 are gold, and the rest are black. What are the odds against the next car leaving the lot being black?
  • A standard number cube is tossed What is P(greater than 3 or odd)?
  • A fan of country music plans to make a custom CD with 11 of her 28 favorite songs. How many different combinations of 11 songs are possible?
  • What is the median of the data set 98, 71, 75, 90, 92, 88, 63, 71, 99, 10, 73, 68, 76, 89, 83?
  • What is the median of 102, 108, 112, 120, 143, 149, 1150?
  • In how many ways can 4 people be seated in a row of 12 chairs?
  • The mean weight of 32 math students is 98.3 lb. If the students could all stand on the scale together, what would their total weight be?