Stats Help for College-level Students

The Chi-Square Test

Statistical test that explains if deviations from the standard are due to random errors.

Contains information on the starting salaries for 50 college graduates from the University of South Florida.

Contains information on the starting salaries for 50 college graduates from the University of South Florida. Assume the data was collected from a mailed out questionnaire. Find: mean, median,range, standard deviation, Q1, and Q3. Draw a box plot. Create a frequency table,histogram with 6 classes, construct a 96% confidence int ...continues

Trials and probability

Steps: 2) Find p-hat(R), the proportion of days on which it rained given that it rained the pervious day. 3) Find p-hat (NR) the proportion of days on which it rained given that it did not rain the previous day. 4) Construct confidence intervals for both p-hat(R) and P-Hat(NR) (you can chose level of confidence) ...continues

Binomial Distribution

merican air flight 2705 from N.Y. to San Francisco has seats for 340 passengers. An average of 7% of the people with reservations do not show up so American Air overbooks by accepting 355 reservations for the 340 seats. We can analyze this system by using a binomial distribution with N=355 and P=0.93 (the probability that a boo ...continues

Least square regression

1.The following data represent the number of calories per serving and the number of grams of sugar per serving for a random sample of high -fiber cerals. Here are the data to test this claim. Calories, x 200 210 170 190 200 180 210 210 210 190 190 200 Sugar, y 18 23 17 ...continues

Calculating standard error and least square regression.

A doctor wanted to determine whether there is a relation between a male's age and his HDL (so called good) cholesterol. He randomly selected 17 of his patients and determined their cholesterol. a. Determine the least-squares regression equation from the sample data. b. Compute the standard error of y' c. Compute t ...continues

Calculating the probability from a given situation using combinations.

A class is given a list of 20 study problems from which 10 will be part of an upcoming exam. If a given student knows how to solve 15 of the problems, find the probablility that the student will be able to answer, a. All 10 questions on the exam b. Exactly 8 questions on the exam c. At least 9 questions on the exam

Statistic help required

Could anyone tell me how I go about doing the following: i)Plot the data I have attached the related data!

How to determine if it is a p^ problem or a normal distribution

I need an overview of how probability works, how to determine if it is a p^ problem or a normal distribution

Dependent probability

Problem 1. A class is given a list of 20 study problems from which 10 will be part of an upcoming exam. If a given student knows how to solve 15 of the problems, find the probability that the student will be able to answer, a. all 10 questions on the exam? b. exactly eight questions on the exam? c. at least nine questio ...continues