Written Assignment 2 -NO LATE ASSIGNMENTS ACCEPTED!! -PLEASE STAPLE PAGES OR POI
ID: 3056933 • Letter: W
Question
Written Assignment 2 -NO LATE ASSIGNMENTS ACCEPTED!! -PLEASE STAPLE PAGES OR POINTS MAY BE TAKEN OFF. WE GRADE THESE QUESTION BY QUESTION TO KEEP GRADING FAIR, NOT PAPER BY PAPER, SO NOT STAPLING CREATES A PROBLEM. -PLEASE ANSWER QUESTIONS IN ORDER AND CIRCLE OR Box FINAL ANSWERS -LEAVE ANSWERS OUT TO FOUR DECIMAL PLACES -EACH PART OF EACH QUESTION IS wORTH 2 POINTS FOR A TOTAL OF 48 POINTS. 1. A student knows they need to get 8 questions out of 10 correct on a final quiz in order to keep an A in the class. How many different combinations of 8 questions could they answer correctly out of the 10? 2. Use R to denote brown eyes, L to denote Blue eyes, and B to denote blonde hair. Based on prior information, we know that roughly 32% of people have blue eyes and 33% of people have brown eyes 45% of people have blue eyes and blonde hair, whereas only 7% of people have brown eyes and blonde hair, we also know that 50% of people have brown eyes or blonde hair a. What percentage of people are blonde? b. What percentage of people do NOT have blue eyes or blonde hair? c. Are R and L mutually exclusive events? Why or why not? d. Are R and B mutually exclusive events? Why or why not? e. Are R and L. independent? Explain, using probabilities. f. Are L and B independent? Explain, using probabilities g. If we know someone has Brown eyes, what is the probability that they are also blonde? od 3. Similarly to 2, we know that 12% ofpeople have green eyes. Suppose we take a sample of25 p ople. a. How many adults are expected to have green oyes in the sample of 257 b. What is the standard deviation? c. What is the probability that exactly 2 people in the sample will have green eyes? d. What is the probability that more than 2 of people in the sample will have green eyes?Explanation / Answer
Ans 1
Combination(10,8) = 45
PS : We are directed to solve only the first question when multiple questions are posted or the first 4 parts when multiple parts of the same question are posted.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.