question: mark achieved 48 marks on the last test. Calculate his percentile. What mark would give the 80th percentile? marks: 22, 26, 30, 34, 38, 40, 43, 46, 48, 48, 49, 52, 56, 56, 66, 72, 72, 79, 81, 88 please show all steps.

Q: Find the percentage of data points that lie between -2.31 and 1.85.

A: Assuming the data follows standard normal distribution with mean 0 and standard Deviation 1Finding…

Q: Find the standard deviation of this number set: {2, 4, 9} showing all of the steps involved as shown…

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Q: find 40 th percentile   10,15,18,16,19,20,24,15,26,20,22,25,28,17

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Q: find out 3rd decile  65,85,75,30,20,42,94,34,75,15

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Q: Find the 1rst quartile and 3rd quartile of the following numbers  41,43,46,47,48,50,51,52,53,54,55

A: The given numbers already in the increasing order: 41,43,46,47,48,50,51,52,53,54,55 Median = middle…

Q: An environmentalist wants to find out the fraction of oil tankers that have spills each month. Step…

A: The question is about proportion.Given :Randomly selected no. of tankers ( n ) = 432No. of tankers…

Q: what percent od 60 is 15

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Q: Sally just received her SAT results. Her SAT mathematics score was 600 and is in the 74th…

A: The score is 600 and it is the 74th percentile.

Q: elaine gets quiz grades of 77,85, and 66. she gets a 61 on her final exam. find the weighted mean if…

A: It is given that the quiz grades are 77, 85, and  66. The final grade is 61.

Q: Mrs. Cruz is a Math teacher; she gives a 60 item test for remedial class. The scores of 20 students…

A: Deciles divide the ordered data into 10 equal parts.   There are 20 values in the data. So, n = 20.…

Q: Calculate the 3rd quartile, 9th decile and 46th percentile c the distribution

A: The partition is the measure which divide the data set into equal number of parts. Some of the…

Q: The temperature for the last 5 days were: 75⁰F, 66⁰F, 80⁰F, 68⁰F and 73⁰F. What was the mean…

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Q: We have 39 balls in the box, you choose 5 random balls. What is the percentage that 4 of them are…

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Q: What is the weighted mean of the numbers 10%, 30%, 60%, 70, 86 and 94

A: The formula of weighted mean is given by…

Q: -Solve for D5 and P10 of the given set of grouped data. 78, 112, 136, 224, 368, 389, 456, 540, 566,…

A: Given Data: 78, 112, 136, 224, 368, 389, 456, 540, 566, 629, 675, 711, 730, 804, 817   a) D5…

Q: Alex is 80th in his class of 320 students. What is his percentile rank in class?

A: Data given p=80, n=320

Q: Find the z-score that separates the largest 5% of scores from the rest.  Round your result to 3…

A: Obtain the z-score that separates the largest 5% of scores from the rest. The z-score that separates…

Q: lease do not give solution in image format thanku) The FBI wants to determine the effectiveness of…

A: Answer  Given  sample size [n] =1753   Favorable cases [x] =683

Q: Exam scores for 28 students are shown below. calculate the percentile for a student whose exam,…

A: Given data of exam scores for 28 students;(in ascending order)…

Q: he percentage of bags weighing between 8.9 and 9.46 ounces is The percentage of bags weighing…

A: According to our guidelines we will solve only first three sub-parts of a question and rest will be…

Q: Give the scores: 88, 64, 77, 94, 67, 59, 99, 87, 94, 71,75 Find the score at the 72nd percentile or…

A: Given data is88,64,77,94,67,59,99,87,94,71,75sample size(n)=11

Q: Find the mean: 4,5,7,9

A: The data set is: 4,5,7,9

Q: Find the median: 25, 18, 17, 29, 40 Median=

A: Given data set: 25, 18, 17, 29, 40

Q: Noah scored 25 points in a game. Mai's score was 35 points. The mean score for Noah, Mai, and Clare…

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Q: find 4th percentilefor given data  12,25,32,6,42,16,18,19,15,23,24,28,29,45,6,23

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Q: median from 2, 3, 3, 2, 3, 4, 5, 4, 5

A: Median : First arrange given data in ascending order.   Median = n+12th ordered value, if n is…

Q: find 25th percentile   101,103,106,108,115,117,119,125,137,149

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Q: Find the mode of these test scores: Test scores 100,75,80,90,80, 100,92,88,80,84,81

A: Test scores 100,75,80,90,80, 100,92,88,80,84,81

Q: Do Now: Find the mean of the following test scores: 100, 98, 86, 95, 81

A: Given ,score is 100,98,86,95,81sample size (n)=5

Q: competed in an ironman race, J

A: Here it is given that - 3500 people competed in an ironman race, John finished 805th,

Q: (14-25)/51 %23

A: Recall: A straight line has an angle of 180°.

Q: You did a survey of students on campus to see if they used the light rail or not. 41 student said…

A: percentage problem

Q: Many students work part-time. This past week, a group of student hours worked as 4, 28, 7, 15, 12…

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Q: 20% of the girls in class have blonde hair. 16 girls do not have blonde hair. How many total…

A: NOTE- AS we are allowed to answer one question in one session so, i have answere dfirst one for you…

Q: SOLVE FOR THE FOLLOWING with complete solution:  1, 2, 2,  3, 4, 4, 5, 6, 7, 8, 8, 9, 11, 13, 15,…

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Q: 78th percentile   105,108,120,115,112,116,115,118,119,120,111,125,135,114

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Q: find 40th percentile 14,16,18,19,20,24,25,26,28,29,30,32,35,36,38,39

A: Givan Arranging Observations in the ascending order, We get :…

Q: There were 34 females that weighed over 250 pounds. What percent of females aged 20 to 29 weighed…

A: Given data,  N~(161.61,48.95)  i.e., μ=161.61σ=48.95   If n=34 P(X>250)=?

Q: You want to find out the top three food items sold in your school cafeteria. Select the best way to…

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