# Madeline Alexander

Statistics teacher | Experienced educator in USA

With a background in Statistics from New York Law School, I bring a unique perspective to tutoring. My passion lies in unraveling the complexities of data analysis and making statistics accessible to all learners. Whether it's probability theory or regression analysis, I'm here to guide students through every step. With a commitment to clarity and patience, I foster an environment where questions are encouraged and understanding is paramount. Let's embark on this statistical journey together and unlock the power of numbers.

## Questions

If you roll a die three times, how many different sequences are possible?

Can someone help me answer this question?

If you regress random variable Y against random variable X, would the results be the same if you regressed X against Y?

Friday night Joe decided to order a 1-topping pizza. He had a choice of thin or thick crust and a choice of five toppings. How many different pizzas could he choose from?

How do you find the probability of picking a diamond from a standard deck of cards which has 13 cards in each of four suits: spades, hearts, diamonds, and clubs, in a simplified fraction?

Does the number of degrees of freedom of a regression refer to the number of variables?

Given a normal distribution with u=20 and the standard deviation =2.5, how do you find the value of x that has (a) 25% of the distribution's area to the left and (b) 45% of the distributions area to the right?

How do you calculate the slope and intercept of a regression line?

In how many ways can the letters in “Mississippi” be arranged?

To win a particular lottery game a player chooses 5 numbers from 0 to 63. If all five numbers that the player selected match the winning numbers in any order, then the player wins. What is the probability that the winning numbers are 7, 0, 29, 45, and 60?

What is the purpose of blocking in some experiments?

If #P(A) = .7, P(B) = .5#, and #P(B|A)=.4#, what is #P(A# and #B)#?

What is the difference between the sample mean and the population mean?

What If a set of grades on a statistics examination are approximately normally distributed with the mean of 74 and a standard deviation of 7.9? When:

How do you find the mean of the random variable #x#?

What is the relationship between R-Squared and the correlation coefficient of a model?

A smoothie shop offers drinks with 5 types of whole fruit, 4 types of juice, and 3 flavors or yogurt. How many smoothie combinations are possible?

- What is the standard deviation of is #sigma(X)=(sigma(Y))/2#, what is #sigma(X-Y)#?
- What is the standard deviation of just one number?
- Verify that f(x)=x/8 can serve as the probability density function of a continuous random variable which can take on any value in the interval from 0 to 4 ?