probability
posted by jj reddick .
Mr. Spark has problems starting his two cars during the winter. He decided to record the number of times each car starts during a 30day period. He recorded the following information. His Hyundai started 18 times. His Subaru started 20 times. Both cars started 40% of the time.
What is the probability that, on any particular morning during a 30day period,
a.) at least one car started?
b.)neither car started?
Respond to this Question
Similar Questions

probability
2.The daily production from a car factory=3 different modelsA,B,C which are in two different coloursR and S. Daily the factory produces 1600 model A cars,800 of model B and 600 of model C. Overall,40% of the cars are of colour R,60% … 
physics
Cars A and B are racing each other along a straight path in following manner: Car A has head start and is a distance dA beyond starting line at t=0. The starting line is at x=o. Car A travels at constant speed vA. Car B starts at starting … 
physics
Cars A and B are racing each other along a straight path in following manner: Car A has head start and is a distance dA beyond starting line at t=0. The starting line is at x=o. Car A travels at constant speed vA. Car B starts at starting … 
statistics
According to the Smart magazine, 70% of smokers started smoking before the age of 18. Suppose 10 smokers are randomly selected and the number of smokers who started to smoke before the age of 18 is recorded. a) explain why this is … 
physics
Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance Da beyond the starting line at t=0. The starting line is at x=0. Car A travels at a constant speed Va. … 
Algebra Grade 7
Mr and Mrs Chen have three children. suppose the chance of having wither a boy or girl is 50%. what is the probability of having two boys and one girl? 
physics
Cars A and B are racing each other along the same straight road in the following manner: Car A has a head start and is a distance DA beyond the starting line at t=0. The starting line is at x=0. Car A travels at a constant speed vA. … 
Physics
Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car … 
math urgent!
You flip a coin 20 times and get tails 15 times. You flip the coin 80 more times. What do you expect to happen to the experimental probability of getting tails as you increase the number of trials? 
math
A standard number cube with the numbers 1 through 6 is rolled. Find the probability of rolling a number greater than 4. A number cube is rolled 360 times and the results are recorded as follows: 41 ones, 54 twos, 62 threes, 75 fours, …