# Josiah Allen

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.

## Questions

Given the set: # {2,-1,-3,x,-3,2} #, for what x would the mean of the set be 3?

A number is selected, at random, from the set {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. What is P(odd)?

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

How to find median and a mode of arranged and non-arranged data respectively?

What Word Describes The Set Of Data Below? 1,1,1,2,3,5,7,7,7,8,10,11,11,15 b.This Set Has 2 Mode(bimodal) C.This Set Has More than 2 modes(multimodal) *Write In A Sentence Of Why The Answer Is Correct.

A z score of +1.6 represents a value how many standard deviations above the mean?

You get a mosquito bite. Is this event dependent or independent of the mosquito landing on your arm?

If I have 5 crayons (red, orange, yellow, green, blue) and I randomly choose 4, what are the chances that I do NOT choose green?

There are 12 face cards in a standard deck of 52 cards. How many ways can you arrange a standard deck of 52 cards such that the first card is a face card?

Find the standard deviation for the data set. 35,36,36,38,41,42,45,48?

What is the z-score of sample X, if #n = 169, mu= 33, St. Dev. =39, and E[X] =37#?

What is the z score of 0.05?

What is the mean, the median, and mode of the set of values: 17, 19, 22, 9, 18, 13, 24, 6, 25?

What is a binomial distribution?

A credit card company randomly 9 generates temporary four digit passcodes for cardholders. Serena is expecting her credit card to arrive in the mail. What is the probability that her pass code will consist of four different odd digits?

How can you test the fairness of a pair of dice?

Given a set # {-1, x ,-4, -21} #, for what x would the mean of the set be 0?

How many 8-character passwords can be created from 26 lowercase letters and 10 digits, assuming that in every password there must be as many letters and numbers as?

You take a sample of 144 observations and have a value of x bar equal to 59. The population mean is 68 and the population standard deviation is 36. What is the z score of your sample mean?

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?