Question
Part A- Tessa keeps seven cards with the picture of a king and three cards with the picture of a queen on a table face
Part A- Tessa keeps seven cards with the picture of a king and three cards with the picture of a queen on a table face down, so the pictures are hidden. She mixes up the cards then turns over one card and finds the picture of a king on it. She removes this card from the table and turns over another card.
What is the probability that the card Tessa turns over has a picture of a king on it?
A. 1/7
B. 2/9
C. 6/10
D. 6/9
Part B- A coin was flipped 150 times. The results of the experiment are shown in the following table:
Heads Tails
90 60
Which of the followingbestdescribes the experimental probability of getting heads?
A. It is 10% higher than the theoretical probability.
B. It is 10% lower than the theoretical probability.
C.It is equal to the theoretical probability for this data.
D.The experimental probability cannot be concluded from the data in the table.
Part C- A teacher wants to know whether the students in the entire school prefer watching television or playing outdoor games after school. The teacher draws a random sample from the following groups:
- All school teachers
- All students on the football team
- All boys in each grade
- All students in each grade
Which of the following groupsbestrepresents the population from which the teacher should take a random sample to get thebestresults for her survey?
A. All school teachers
B. All students on the football team
C. All boys in each grade
D. All students in each grade
Part D- The number of marbles of different colors stored in a hat is listed below:
- 4 red marbles
- 10 green marbles
- 7 blue marbles
Without looking in the hat, Dan takes out a marble at random. He replaces the marble and then takes out another marble from the hat. What is the probability that Dan takes out a blue marble in both draws?
A. 2/21
B. 1/9
C. 1/2
D. 2/3
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