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 third quartile score is at most 59, then how many students passed the exam?

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: Approximately 10% of students have a composite score below what level

A: If X is the composite score of the students, then we need to search for a x, such that P[X≤x]=0.1.

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

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: 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:

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A: Given : There are 14 players Captain of the team scored 35 goals last year, which is more than 10…

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 five exams, Rachel has a mean score of 80 points. Her lowest score was 50.  If this score is…

A:

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 9940 students. How many students scored lower…

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

Q: The median salary of the 1,264 teachers in a large public school district is $39,350. If the 66th…

A:

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: We made a survey with the number of people in a household and the number of times they get sick…

A: Solution: Let x be the number of people in a household  y be the number of times they get sick in a…

Q: A recent study of young executives showed that 30 percent run, 20 percent bike and 12 percent do…

A: Note: Hi there! Thank you for posting the questions. As there are several independent questions,…

Q: You survey 100 people and find that 75 of them would prefer to work at home to some extent. When…

A: Given: You survey 100 people and find that 75 of them would prefer to work at home to some extent.…

Q: Travis took the ACT (μ=19.50,σ=7) and recieved a percentile of 67. What was his z score? What was…

A: you had not provided distribution of sat score so we can not find answer of c.

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

A:

Q: A proportion .40 of the tagged birds were recovered. 150 were tagged in all. How many were…

A:

Q: A sample of 125 light bulbs contained 3 defective bulbs. How many defective bulbs would you expect…

A: To calculate the number defective bulbs in the batch of 3000 light bulbs. A sample contains 125…

Q: Two doctors asked 6 of their patients, who were smokers, how many years they had smoked. In…

A: Given, Two doctors asked 6 of their patients, who were smokers, how many years they had smoked. In…

Q: At Roxbury Community College, 7 out of every 10 students take introduction to Statistics. If there…

A: given data  N = 2500 students total in college  7 out of every 10 students take introduction to…

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

A: Given: Median = $66,650, 90th percentile = $178,500.

Q: In a class of 10 students, James got 3rd position from the lowest. What is his percentile rank?

A: Given data: In a class of 10 students, James got 3rd position from the lowest. To find: What is his…

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: Find the first quartile (Q1), second quartile (Q2), and third quartile (Q3). If Baby A weighs 7.98…

A: The following are weights (in pounds) of newborn babies in a certain hospital in a period of 1 week:…

Q: what percentage of the men worked?

A: men women total work 15 23 80 not work 23 28 51 total 38 93 131 what percentage of the…

Q: How many scores are in the population?

A: here given, SS = 328 variance = σ2 = 8

Q: A sample of 125 light bulbs contained 3 defective bulbs. How many defective bulbs would you expect…

A: Given infromation:A sample of 125 light bulbs contained 3 defective…

Q: In a recent survey of 180 people who drink coffee or tea, it was found that 137 drink coffee and 74…

A:

Q: After six biology tests, Ruben has a mean score of 74. What score does Ruben need on the next test…

A: The mean score of Ruben after six biology tests is 74.

Q: of the population have high school scores less than 77?

A:

Q: Twelve percent of a group of 900 motors are found to be overloaded. many are not overloaded? 792 110…

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Q: An airline food service found that a recent flight of 120 passengers ordered dinner as depicted in…

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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: 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: 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 78. What score does Ruben need on the next test…

A: Note that, the required mean is 80. The total number of tests after the next test is 7.

Q: A survey of 1104 adults nationwide asked, what irks you most about the actions of other motorists?…

A: Percentage is the ratio of people responded tailgators to the total people surved.

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: 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: According to the U.S. Department of Labor, as of May 2009 the median annual salary for a physical…

A: Assume X be the random variable representing the annual salary of a physical therapist (in dollars).…

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: A student answered 78 out of 100 homework questions correctly on the first try. What percent of…

A: Solution-: A student answered 78 out of 100 homework questions correctly on the first try. What…

Q: Rene scored at the 84th percentile on a test given to 12,600 students. How many students scored…

A: Given Rene scored at the 84th percentile a test given to 12,600 students.   How many students scored…

Q: On a multiple choice test with 9 questions, each question has four possible answers, one of which is…

A: It is given that there are 9 questions and each question having four possible, one of which is…