Eight hundred student took a 90-point standardized examination. After the examination, the students were given their percentile scores, instead of their raw scores. The passing score is 60 points. If the score of Maria is the 87th percentile, then how many students scored  lower than or equal to Maria's score?

Q: In a school band of 24 students, 9 students play brass instruments. What percent of the members play…

A: The total students in the and is 24. The number of students that play brass instruments is 9.

Q: The failure rate for taking the bar exam in Philadelphia is 41%.  If 375 people take the bar exam,…

A: Given that, The failure rate for taking the bar exam in Philadelphia is 41%  i.e. probability, p =…

Q: Eight hundred student took a 90-point standardized examination. After the examination, the students…

A:

Q: Kevin scored at the 70th percentile on a test given to 9920 students. How many students scored lower…

A:

Q: In a large data set, the 49th percentile is 523 and the 71st percentile is 675.  About what…

A:

Q: Eight hundred student took a 90-point standardized examination. After the examination, the students…

A: Given information: Eight hundred student took a 90-point standardised examination Third quartile…

Q: In the freshmen class, 62% of the students take Math, 49% take Science, and 38% take both Science…

A: It is given that, P(Math) =62%=0.62 P(Science) =49%=0.49 P(Math and Science) =38%=0.38

Q: A middle school took all of its 6th-grade students on a field trip to see a ballet at a theater that…

A: Given that there are total 3840 seats. The students left 2496 seats vacant. This means the students…

Q: What percent of students had an IQ of at least 120​?

A: From the given histogram, the frequency table can be observed as shown below:

Q: About 25% of the population watches the evening television news coverage as well as the soap operas.…

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Q: At a local Dunkin’ Donuts, a survey showed that out of 1,090 customers eating lunch, 327 ordered…

A:

Q: seventeen percent of the plants in the greenhouse are broad leaf plants and the rest are grasses.…

A: Given, that there are broad leaf plants and grasses are in greenhouse, where 17% of the plants in…

Q: Helga scored in the 70th percentile rank on an exam. If 300 students took the exam, how many…

A: Given: percentile rank of Helga: 70th           total number of students who took exam: 300 students…

Q: One earthquake measures 3.5 on the Richter scale and another measures 2.5.  How do the two quakes…

A: Suppose A be the first place where the measure of the earthquake is 3.5 and B be the second place…

Q: The median of the five test scores is 82.  If four of the grades are 65, 93, 77, and 82, what can…

A: Given, Median of 5 scores=82 Four grades are 65,93,77,82 5th grade=?

Q: If 55% of the books have been signed out, what percent of the books have not been signed out?

A: Given that: According to the question, 55 % of the books have been signed out. Signed  out=55…

Q: . In Exton School, 60% of the boys play football and 36% of the boys play ice hockey. Given that40%…

A: Let us define the events as, A: Boys who play football.B: Boys who play ice hockey. From the given…

Q: On the Planet Zog, 50% of the population like watching sport, 60%of the population like listening to…

A:

Q: Kevin scored at the 70th percentile on a test given to 9940 students. How many students scored lower…

A: Given Kavin got 70 percentile. Total students are 9940.

Q: A group has 20 man and 22 women what is the percentage of the women in the group

A: Given that, Total number of people = 20+22= 42 Man = 20 Women= 22

Q: In 2015, the median family income in the United States was $66,650. (Source: U.S. Census Bureau) If…

A: Given information Median family income $66,650 Median income means 50th percentile

Q: Kevin scored at the 60th percentile on a test given to 9920 students.How many students scored lower…

A: Given Kevin score = 60th percentile No. Of students = 9920

Q: The test score at the 25th percentile is 108. What is the test score at the 75th percentile?

A: Solution

Q: Kevin scored at the 60th percentile on a test given to 9920 students. How many students scored lower…

A:

Q: n 2015, the median family income in the United States was $66,650. (Source: U.S. Census Bureau) If…

A: It is given that the median family income in the United States is $66,650.

Q: A student has scores of 72%, 74%, and 78% on three exams. What percent score does he need on the…

A: Here we solve the inequality for x . x= score for the fourth exam.

Q: Susan scored 82%, 75%, 77%, and 85% on the first four tests. What must she score on the fifth test…

A:

Q: Rene scored at the 84th percentile on a test given to a 12600 students . How many students scored…

A: Given percentile of Rene=84

Q: In 2015, the median family income in the United States was $66,650. (Source: U.S. Census Bureau) If…

A: Given information Median family income = $66650 90th percentile for 2015 four-person family income…

Q: On a placement examination, Rick scored lower than 1216 of the 12,870 students who took the exam.…

A: Consider the given: Total students = 12870Rick scored lower than 1216,So, Rick score is among top…

Q: There are 75 students enrolled in American History.  If 60 of the students enrolled are also…

A: Given that: There are 75 students enrolled in American History.  If 60 of the students enrolled are…

Q: There are 12 boys in a class of 30 students. What percentage of the class is boys?

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Q: 35 out of 125 students are in the marching band. What percent of students are in the marching band?

A: Given: 35 out of 125 students are in the marching band.

Q: Bob scored at the 65th percentile on a test given to 9960 students. How many students scored lower…

A: x = no. of data value less than x  * 100/total no. of data values

Q: All of the 1,020 students at a local high school must enroll in a foreign language course. If 269…

A: The detailed solution is given in the next step.

Q: On three examinations, Elena received scores of 82, 91, and 76. What score does Elena need on the…

A: let Elena needs score X for her average score 85 we know that the average value formula average…

Q: One half of the fifth grade class belong to an after school club and one third of those students…

A: Given After school club = 1/2 of total Math club = 1/3 of after school club

Q: What percent of students who took the test have a score greater than 1300? If 5000 students took the…

A:

Q: A school knows that 38% of its incoming students own a smart phone and a tablet. What percent of…

A: Let S be the set of students with smartphone and T be the set of students with tablet Percentage of…

Q: A recent survey reports that 22% of students take the bus to campus. If 660 students commute to…

A:

Q: In a sample of 169 students, 16 said they have donated blood. What percent of the students have…

A: Given that, In a sample of 169 students, 16 said they have donated blood.

Q: 2400 people attended a basketball game. 696 of the people attending supported the home team, while…

A:

Q: Kevin scored at the 60th percentile on a test given to 9920 students. How many students scored lower…

A: Since Kevin scored 60th percentile, it means that Kevin's score is in the top 60 % of amongst the…

Q: After six biology tests, Ruben has a mean score of 75. What score does Ruben need on the next test…

A: Let 'x' denote the score Ruben need to score on the next, i.e. seventh test so that his average…

Q: According to the U.S. Department of Labor, the median annual salary in 2003 for a physical therapist…

A:

Q: In a classroom, 12 students are wearing glasses, while six or not. What percent of the students are…

A: Given data: Number of student with glasses is p=12. Number of student without glasses is q=6.

Q: Katrina must take five exams in a math class. If her scores on the first four exams are 71, 69, 85,…

A: Given that Katrina scores on the first four exams are 71, 69, 85, and 83 and suppose she scores x…

Q: The median salary of the 1,073 teachers in a large public school district is 38,850 dollars. If the…

A: From the given information, Total number of teachers =1073 Median salary of a teacher = $ 38,850…

Q: After six biology tests, Ruben has a mean score of 72. What score does Ruben need on the next test…

A: