probability
posted by Anonymous .
1) A secret admirer has been leaving you roses at the rate of 4/day. What is the probability that, on a given day, you will receive (a) exactly one rose (b) at least one rose?
2) Every student has a 1 in 9 chance of winning a certain prestigious scholarship. What is the probability that, in a group of 8 students, all of them win the scholarship? None of them wins it? At least one wins it?

1. Read the question. It will tell you the answer. Is four exactly one? Is it one or more?
2. All eight win: (1/9)^8 = 2.32*10^8
Nobody wins: (8/9)^8 = 0.3987
Respond to this Question
Similar Questions

english
is the connotation of "rose" positive? why? 
probability
Find the probability that an insurance company will receive more than one warranty claim per day for at least eight of the next 10 days. 
statistics
the average student sends about 200 text messages a day with the standard deviation of 25 texts.(show graph) a.what is the probability that a student sends more than 250 messsages a day? 
Mathematics (probability)
A bag contains 3 red and 5 white toys. Rose picked two toys one after the other. Draw a probability tree. Find the probability that Rose gets two red toys. You can use Microsoft Word to draw a probability tree. 
English
I urgently need someone to check this summary of O. Wilde's The nightingale and the rose. Thank you very much in advance. 1) Oscar Wilde's work titled "The Nightingale and the Rose" is a fairytale. Wilde begins the fairytale with a … 
statistic
A student must pass through 12 sets of traffic lights on his way to university. Suppose that each of the lights is green 39.5% of the time, yellow 5.9% of the time, and red 54.6% of the time. Suppose also that the traffic lights function … 
Math probability
In a city, every day is either cloudy or sunny (not both). If it's sunny on any given day, then the probability that the next day will be sunny is 3/4. If it's cloudy on any given day, then the probability that the next day will be … 
statistics
7. The following statements are true for a binomial distribution except: (a) Binomial is a continuous probability distribution. (b) There are n number of trials. (c) There are two possible outcomes for each trial: Success (S) and Failure … 
STATISTICS
A salesperson contacts eight potential customers per day. From past experience, we know that the probability of a potential customer making a purchase is .05. b.) What is the probability the salesperson will make exactly two sales … 
STATS PROBABILITY
AFTER A TRIP TO THE MARKET, GINA PUTS TOGETHER BOUQUETS BY DRAWING AT RANDOM FROM HER PILE OF FLOWERS WHICH CONTAIN THE FOLLOWING, LAVENDER ROSES 12, RED ROSES 12, WHITE LILIES 6, YELLOW CARNATIONS 18, RED TULIPS 24 AND 12 WHITE TULIPS. …