# Gabriel Allred

Statistics teacher | Verified Expert

With a Statistics major from The University of Texas Health Science Center at San Antonio, my passion lies in demystifying numbers and fostering a deep understanding of mathematical concepts. As an experienced tutor, I excel in breaking down complex statistical theories into digestible bits, empowering students to conquer any data-related challenge. My approach focuses on personalized guidance, tailored to individual learning styles, ensuring every student reaches their full potential. Let's embark on a journey of statistical mastery together.

## Questions

What is a simple event in probability? What is a complementary event?

What does Welch's t-test measure?

How to solve this?There are three events A,B,C one of which must and only one can happen.The odds are 7 to 3 against A and 6 to 4 against B,find the odds against C

A piggy bank contains a certain number of coins, of which 53 are dimes and 19 are nickels. The remainder of the coins in the bank are quarters. If the probability of randomly selecting a quarter is #1/4#, how many quarters does the bank contain?

When do you add probabilities?

What is the mathematical formula for calculating the variance of a discrete random variable?

The experimental probability of randomly choosing a red ball from a bag filled with red and blue is #75%.# if there are 4 blue balls in the bag, how many red balls are there?

What is the variance of a probability distribution function of the form: #f(x)=ke^(-2x)#?

How do you find the average of one number?

What is the probability of flipping a coin and getting a heads, given that the probability of getting a tails is the same, and there is no chance that the coin lands on its side?

- What is the range for the following set of measurements?
- How do I take a simple random sample, using a TI-84?
- A fair die is rolled 3 times. A 4 is considered "success", while all other outcomes are "failures". What is the probability of 2 successes?
- Is the number of children in family continuous or discrete?
- How do you make a bell curve using Excel?
- If we were to toss a single die (singular for dice) 1000 times, how many 6s could we expect over the long run? What is the standard deviation?
- Alan, Betty and Carol are applying for three different jobs in a company. The probability that Alan gets his job is 0.5; the probability that Betty gets her job is 0.75; the probability that Carol gets her job is 0.3. Can anyone solve this?
- A fair spinner has 8 equal sections with a number on each section. Five of them are even numbers. Three are odd numbers. What is the probability that I spin an even number?
- How do overlapping events differ from mutually exclusive events?
- How do I find the probability density function of a random variable X?