A principal is trying to select two 7th students to represent school in music competition. The...
A principal is trying to select two 7th students to represent school in music competition. The school has 400 7th graders and 250 of them participate in music classes. What is the probability that both students have not studied music in 7th grade?
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A principal is trying to select two 7th students to represent
school in music competition. The...
The school of music has two printers that students can use to print their work. The...
The school of music has two printers that students can use to print their work. The probability that a printer fails on any single day is 0.005. Failures occur independently. Any failed printers are repaired at the end of each day, so each day can be considered an independent trial. What is the probability that at least one printer fails on a day?
U.S. schools face an ongoing challenge: as students get closer to high school graduation, their enthusiasm...
U.S. schools face an ongoing challenge: as students get closer to high school graduation, their enthusiasm for school falls. A Gallup poll in June 2017 has discovered that fifth graders are most engaged with school, while 11th graders are least. The latest Gallup poll showed that only 32% of 11th graders are engaged in school. Assume this value represents the population proportion. Suppose we randomly sample 150 11th graders in the U.S. and ask them their engagement in school. ?...
Suppose you have two eleventh grade american history classes at a particular high school. One is...
Suppose you have two eleventh grade american history classes at a particular high school. One is taught by Mr. Knight and one is taught by Ms. Princess. Mr. Knight's class has 30 students in it and Ms. Princesses has 26 students. A common exam was given to both classes, Mr. Knight's class had a median score of 80 and Ms. Princesses class has a median score of 70. What can you say about the median score of the classes when...
(1 point) An elementary school is oftering 3 language classes: one in Spanish, one in French,...
(1 point) An elementary school is oftering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 98 students in the school. There are 35 in the Spanish class, 27 in the French class, and 25 in the German class. There are 13 students that in both Spanish and French, 6 are in both Spanish and German, and 7 are in both French and German. In addition, there are...
(1 point) An elementary school is offering 3 language classes: one in Spanish, one in French,...
(1 point) An elementary school is offering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 109 students in the school. There are 37 in the Spanish class, 39 in the French class, and 27 in the German class. There are 17 students that in both Spanish and French, 7 are in both Spanish and German, and 9 are in both French and German. In addition, there are...
A school district has a population of 2000 students. A researcher intends to select a small...
A school district has a population of 2000 students. A researcher intends to select a small sample of these students for a study on physical activity. Using a simple random sampling technique, what is the probability that any of the students in the school is selected into the sample?
17. Eleventh-and twelfth-grade students at Fairlawn High School were asked whether or not they have their...
17. Eleventh-and twelfth-grade students at Fairlawn High School were asked whether or not they have their own car. The results of the survey are recorded in the following two-way frequency table. Eleventh Grade (E)| -eearte) : NO car Twelfth Grade ( 228 32 Suppose a student is randomly chosen from a list of eleventh-and twelfth-grade students at the high school. What is the probability that the student chosen will be in twelfith grade or have a car? Use probability and...
1. An elementary school is offering 3 language classes: one in Spanish, one in French, and...
1. An elementary school is offering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 104 students in the school. There are 43 in the Spanish class, 34 in the French class, and 24 in the German class. There are 17 students that in both Spanish and French, 6 are in both Spanish and German, and 9 are in both French and German. In addition, there are 4...
In the senior year of a high school graduating class of 80 students, 34 studied mathematics,...
In the senior year of a high school graduating class of 80 students, 34 studied mathematics, 58 studied psychology, 44 studied history, 16 studied both mathematics and history, 23 studied both mathematics and psychology, 7 studied history but neither mathematics nor psychology, 8 studied all three subjects, and 4 did not take any of the three. If a student who studied mathematics is selected, what is the probability that the student has also studied psychology? [The answer should be a...
I. At a certain school, 60% of the students wear neither a ring nor a necklace,...
I. At a certain school, 60% of the students wear neither a ring nor a necklace, 20% wear a ring, 30% wear a necklace. Compute the probability that a randomly selected student wears (a) a ring or a necklace; (b) a ring and a necklace 2. A school offers three language classes: Spanish (S), French (F), and German (G). There are 100 students total, of which 28 take S. 26 take F, 16 take G, 12 take both S and...
(1 point) An elementary school is oftering 3 language classes: one in Spanish, one in French, and one in German. These classes are open to any of the 98 students in the school. There are 35 in the Spanish class, 27 in the French class, and 25 in the German class. There are 13 students that in both Spanish and French, 6 are in both Spanish and German, and 7 are in both French and German. In addition, there are...
17. Eleventh-and twelfth-grade students at Fairlawn High School were asked whether or not they have their own car. The results of the survey are recorded in the following two-way frequency table. Eleventh Grade (E)| -eearte) : NO car Twelfth Grade ( 228 32 Suppose a student is randomly chosen from a list of eleventh-and twelfth-grade students at the high school. What is the probability that the student chosen will be in twelfith grade or have a car? Use probability and...
In the senior year of a high school graduating class of 80 students, 34 studied mathematics, 58 studied psychology, 44 studied history, 16 studied both mathematics and history, 23 studied both mathematics and psychology, 7 studied history but neither mathematics nor psychology, 8 studied all three subjects, and 4 did not take any of the three. If a student who studied mathematics is selected, what is the probability that the student has also studied psychology? [The answer should be a...
I. At a certain school, 60% of the students wear neither a ring nor a necklace, 20% wear a ring, 30% wear a necklace. Compute the probability that a randomly selected student wears (a) a ring or a necklace; (b) a ring and a necklace 2. A school offers three language classes: Spanish (S), French (F), and German (G). There are 100 students total, of which 28 take S. 26 take F, 16 take G, 12 take both S and...
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