Hey guys, I am currently stuck on some math questions (Grade 12) and am wondering if I can get someone's help. My assignment is due very soon and I really need to finish these questions.
The Questions are from both the Trigonometry and Statistics unit. I would really appreciate if someone can help me out by showing me how to do the questions. I know there are tons of smart people out there on CP.
Statistics:
4 marks 1. "When reporting results to head office, Janice was told to make sure that the mean is 100 and the standard deviation is 10. When she calculated these statistical measures, she found the actual standard deviation to be 8.4 and the mean to be 106.5. Explain what Janice has to do before sending in her results to head office"
4 marks 2."Krina works in a call center assisting home-computer users. The average length of a call in her center is 605 seconds. Her last call took only 569 seconds. her manager offers a bonus for calls that are handled efficiently and quickly. If a call is hand;ed more quickly than 95% of calls, a $2 bonus is paid. What is the largest standard deviation for calls that would let Krina's latest call get the bonus? " I don't even know where to begin with this question.
4 marks 3.The probability of exactly 4 people out of 10 having a red ticket at a charity ball is approximately 0.2508. What is the probability, as a percentage, of a random person having a red ticket? (Hint:red or not red)
These are some of real tough questions for me and I will just leave it for Statistics for now.
Greatly appreciate your help
