Find probability if a coin is tossed 3 times.
P(0 heads)
What is P=1/8
100
Jim has a stack of 8 baseball cards, 5 basketball cards, and 6 soccer cards. If he selects a card at random from the stack, what is the probability that it is a baseball or a card?
What is P=14/19
100
Find the number of probability.(selecting two of eight employees to attend a business seminar)
What is P=28
100
The useful life of a radial tire is normally distributed with a mean of 30000 miles and a standard deviation of 5000 miles. The company makes 10000 tires a month. About how many tires will last more than 40000 miles?
What is 250
100
Find the variance and standard deviation of the set of data to the nearest tenth.
{321, 322, 323, 324, 325, 326, 327, 328, 329, 330}
What is 8.3, 2.9
200
Four cards are drawn from standard deck of cards. Each cards id replaced the next one is drawn. Find probability if you drawn at most one jack.
What is P=27648/28561
200
There are 7 girls and 6 boys on the junior class homecoming committee. A subcommittee of 4 people is being chosen at random to decide the theme for the class float. What is the probability that the subcommittee will have at least 2 girls.
What is P=112/143(about 0.78)
200
Find the number of probability(placing an algebra book, a geometry book, a chemistry book, an English book, and a health book on a shelf)
What is P=120
200
Mrs. Sung gave a test in her trigonometry class. The scores were normally distributed with a mean of 85 and a standard of 3. What is the probability that a student chosen at random scored between 79 and 91?
What is 95%
200
Find the variance and standard deviation of the set of data to the nearest tenth.
{2.4, 5.6, 1.9, 7.1, 4.3, 2.7, 4.6, 1.8, 2.4}
What is 3.1, 1.7
300
Find probability if a die is rolled 4 times.
P(at least three 5s)
What is P=23/648
300
The enrollment at Southburg High School is 1400. Suppose 550 students take French, 700 take algebra, and 400 take both French and algebra. What is the probability that a student selected at random takes French or algebra?
What is P=17/28
300
How many different arrangements of the letters of the Hawaiian word "aloha" are possible?
What is 60
300
A recent study showed that the systolic blood pressure of high school students ages 14-17 is normally distributed with a mean of 120 and a standard deviation of 12. Suppose a high school has 800 students. About what percent of the students have blood pressures below 108?
What is 16%
300
The set of data below shows the rebounding totals for the 2003 Los Angeles Sparks.
{141, 231, 220, 126, 175, 55, 29, 68, 19, 32, 19, 21, 6, 23, 1}
Find the mean, median, and mode of the data to the nearest ninth.
What is 77.7; 32; 19
400
Vicky guesses at all 10 true/false questions on her test. Find probability if she gets at least half correct.
What is P=319/512
400
One tile with each letter of the alphabet is placed in a bag, and one is drawn at random. What is the probability of selecting a vowel or a letter from the word 'equation'?
What is P=4/13
400
Find the number of probability.(selecting three of fifteen flavors of ice cream at the grocery store)
What is P=455
400
The shelf life of a particular dairy product is normally distributed with a mean of 12 days and a standard deviation of 3 days. About what percent of the products last less than 3 days?
What is 0.5%
400
A camera store placed an ad in the newspaper showing five digital cameras of sale. The ad says, ”Our digital cameras average $695.” The prices of the digital cameras are$1200, $999, $1499, $985, $695 $1100, $1300, and $695. Find the mean, median, and mode of the prices.
What is $1047.88, $1049.50, $695
500
If a thumbtack is dropped, the probability of it landing point-up is 0.4. If 12 tacks are dropped, find probability.
P(at most 4 points up)
What is P is about 0.44.
500
In the Math Club, 7 of the 20 girls are seniors, and 4 of the 14 boys are seniors. What is the probability of randomly selecting a boy or a senior to represent the Math Club at a statewide math contest?
What is P=21/34
500
How many ways can a hand of five cards consisting of four cards from one suit and one card from another suit be drawn from a standard deck of cards?
What is P=111540
500
A company manufactures 1000 CDs per hour that are supposed to be 120 millimeters in diameter. These CDs are made for drives 122 millimeters wide. The sizes of CDs made by this company are normally distributed with a standard deviation of 1 millimeter. In one hour, how many CDs would you expect to be between 119 and 122 millimeters?
What is 815
500
John got scores of 92, 85, and 84 on three successive tests. What score must be get on a fourth test in order to have an average of 90?