If a home security system has a 99% reliability rate and nine homes have it installed, what is the probability that eight or fewer of the alarms are triggered in the event of a burglary

If a home security system has a 99% reliability rate and nine homes have it installed, what is the probability that eight or fewer of the alarms are triggered in the event of a burglary

this question is on page 19 in the comparing and scaling section and is question number 1a

A bag contains 3 red marbles and 4 green marbles. A blind folded student selects 2 marbles. Find the probability that both marbles they will be of i) the same colour ii)a different colour These...

Options are A.8/15 B.2/15 C.7/15 D.4/15

There are three bags. One bag has 3 marbles in it; 2 of the marbles are yellow in the first bag. In the second bag, there are 5 marbles, and 1 of those marbles are yellow. In the third bag, there...

a spinner labeled with odd numbers from 3-7 is spun two times. what is the probability that you spin a 5 followed by a 7 if you spin the spinner 360 times

from a deck of 52 cards

Bert has a well -shuffled standard deck of 52 cards, from which he draws one card; Ernie has a 12 -sided die, which he rolls at the same time Bert draws a card. Compute the probability...

A math class consists of 25 students, 14 female and 11 mal e. Three students are selected at random to participate in a probability experiment. Compute the probability that a. a male...

In grade 9. there are 25 students, 4 of them are using glasses. If we choose 5 students to join the volleyball team, what is the probability that 2 students in volleyball team use eyeglasses?&nbs...

A bag contains 3 red marbles and 4 green marbles. A blind folded student selects 2 marbles. Find the probability that both marbles they will be of i) the same colour ii)a different...

The first letter must be a K or a W The first letter must be a K or a W and no digit repeated

What are the chances that at least one of the balls is black?

Suppose that 21% of people own dogs. If you pick two people at random, what is the probability that they both own a dog?

Need help solving problem. A quiz show uses a basket conta 12 balls numbered 1 through 12 for selectiong prizes. One ball is selected at random. How many outcomes are possibl?

Using conditional probability without replacement I find that the chance of getting 5 white balls (69 uniquely labeled balls in total) correct is 1/1348621560. The problem is when I use binomial coefficients...

Based on probability

A board game uses the deck of 20 cards. Two cards are selected at random from this deck. Calculate the probability that both cards selected have a lion, both with and without replacement

Memory= 1Gb, 2Gb, 4Gb, 8Gb, 16Gb, 32Gb Color= Purple, Black, White

can't understand the meaning of it will be replaced by two marbles o