Mathematics, 03.02.2021 23:50 isaiah1027
Select the correct answer.
There are 42 boys and girls participating in an essay-writing competition. Of the competitors, 21 are in seventh grade, 14 are in eighth grade, and 7 are in ninth grade. What is the probability of an eighth grader winning the competition? Which simulation(s) can be used to represent this situation?
A.
The probability is . Simulate this situation by rolling a 6-sided die, with odd numbers representing seventh graders and even numbers representing eighth graders.
B.
The probability is . Simulate this situation by picking a card from a deck of cards, with hearts representing seventh graders, diamonds representing eighth graders, and spades representing ninth graders.
C.
The probability is . Simulate this situation by spinning a spinner with six equal sections, with one section representing ninth graders, two sections representing eighth graders, and three sections representing seventh graders.
D.
The probability is . Simulate this situation by using a number generator with numbers from 1 to 6, with 1 through 3 representing seventh graders, 4 and 5 representing eighth graders, and 6 representing ninth graders.
Answers: 1
Mathematics, 21.06.2019 13:00
Harryβs soccer team plays 2 nonconference games for every 3 games that they play against conference opponents. if y represents the number of nonconference games and x represents the number of conference games, which equation best models this proportional relationship? a)y=2/3 x b)y=3/2 x c)y = 2x d)y = 6x
Answers: 1
Mathematics, 21.06.2019 17:10
The number of chocolate chips in an 18-ounce bag of chocolate chip cookies is approximately normally distributed with a mean of 1252 chips and standard deviation 129 chips. (a) what is the probability that a randomly selected bag contains between 1100 and 1500 chocolate chips, inclusive? (b) what is the probability that a randomly selected bag contains fewer than 1125 chocolate chips? (c) what proportion of bags contains more than 1225 chocolate chips? (d) what is the percentile rank of a bag that contains 1425 chocolate chips?
Answers: 1
Mathematics, 21.06.2019 22:20
As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is
Answers: 2
Select the correct answer.
There are 42 boys and girls participating in an essay-writing competitio...
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