Find the percentile rank of students obtaining the scores:

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 Mean number of the percents 4.38+4.62+4.88+5.02+5.33+6.30

A: Mean is the measure of central tendency. mean of the observations is sum of observations divided by…

Q: Q7: The concentration of nicotine... The concentration of nicotine was measured in a random sample…

A: Given Information : The concentration of nicotine was measured in a random of 40 cigars . The data…

Q: Students scored the following grades on a statistics test: 80, 80, 82, 84, 85, 86, 88, 90, 91, 92,…

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Q: In planing for his children to go back to school Susan buys several items at a discount. Five items…

A: Given information: Five items at $1.29 each, three at $1.49 each, six at $1.79 and nine at $0.99.…

Q: Find the critical value, tc, for c = 0.95 and n = 15.   Question 23 options:   2.145…

A: The objective of this question is to find the critical value (tc) for a given confidence level (c)…

Q: Find the first quartile for the scores on the Mathematics portion of the SAT.

A: Given that. X~N( μ=528, ?=117) μ=528 , ?=117

Q: n the brackets, how did you know to use the 21 and 20 percentiles?

A: The number of observations, The data set…

Q: Find the values of Qj, Q3, Dz and P4, from the following data: Marks No. of Students more than 70 7…

A: Given that  We have to find the first quartile Q1, third Quartile Q3, third decile D3, 40th…

Q: Calculate First and Third Quartiles for the data: 210, 179, 224, 317, 189, 185, 191, 217, 225, 188,…

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Q: Given: Test scores are 59 95 82 78 66 82 65 78 66 66 79 82 66 82. Find the PERCENTILE for the test…

A: We have to percentile for 79 ..

Q: Find the variance of the set of sample data: 55,53,76,52,91,98

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Q: find 1st percentile for given data 12,15,36,35,45,56,58,96,68,98,9,75,25,15,49

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Q: Many athletes (and their parents) worry about the risk of concussions when playing sports. A…

A: First let us sort the head circumferences (in inches) for the players on the team; No. Head…

Q: You have a sample of 10 (sorted) scores:   -15.5 -13.4 -12.7 -12.2 -11.1 -10.8 -9.1 -8.9 -7.9 -7.1…

A: -15.5-13.4-12.7-12.2-11.1-10.8-9.1-8.9-7.9-7.1Sample of size(n)=10

Q: What z value is associated with the fewest 59%? Select one: a. -0.23 b. 0.22 c. 2.22 d. 0.27 e.…

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Q: On a hockey team, there are 14 players. The captain of the team scored on the team, and less than…

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

Q: The scores of the sample of 11 senior high school students were recorded as follows: 70, 83, 74, 75,…

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Q: In the ordered data : 20 , a , 25,30,40 , b , 50 if the mean is 34 , and the first quartile is 24 ,…

A: Given data;  ordered data : 20 , a ,25,30,40 , b ,50  mean  = 34 , first quartile(Q1) = 2 Number of…

Q: Identify by name three important groups of percentiles.

A: In this case, we need to identify the three important groups of percentiles.

Q: Which region or regions showed difference in the average money spent during visit by region.

A: The Tukey HSD results show that there is a significant difference in the average money spent during…

Q: Find the mean (average) for the following set of numbers: x=11,5,13,2,7,5,7,16,14,6

A: We have given that the set of numbers : x = 11, 5, 13, 2, 7, 5, 7, 16, 14, 6   Mean ( Average ):  It…

Q: Find the percentile for the data value. Data set: 3, 11, 7, 22, 3, 23, 13; data value: 7

A: Data set is 3, 11, 7, 22, 3, 23, 13

Q: Calculate First and Third Quartiles for the data: 210, 179, 224, 317, 189, 185, 191, 217, 225, 188,…

A: For the provided data, the first and third quartiles are;

Q: A professor grades students on four tests, a term paper, and a final examination. Each test   counts…

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Q: What is the percentile rank of a bag that contains 1025 chocolate​ chips?

A: The mean is 1252 and the standard deviation is 129.

Q: The following values represent the heights of 12 students (in inches) taking a math class. 72, 63,…

A: In the data set, the number of students hights are given (n) is 13.

Q: Find the percentile for the data value. Data set:…

A: Given: Data Set:  Data set: 121,133,125,119,127,129,119,117,124,121,125,135,117,121,123,118;

Q: The mean marks for a statistics exam were worked out for three classes. Class 1 had 12 students with…

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Q: Given the data set {50, 5, 12, 13, 15,18, 22, 6} Determine the 90th percentile.

A: We have given the data. And we have to find 90th percentile = ? In order to compute the 90th…

Q: Find the mean, median, and mode for the scores in the following frequency distribution table x f 1…

A: Let us write the frequency table in ascending order. x f 1 5 2 2 3 2 4 2 5 2 6 1…

Q: For the data set, {8, 3, 1, 11, 8, 7}, Q1 3.0 %3D Q3 8.0 ニ IQR = | 8.25

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Q: find the value between z score -2.9 and 1.5287

A: To find: Find the value between z score -2.9 and 1.5287

Q: q11- Median is which percentile of the data? Select one: a. 25th. b. 50th. c. 75th. d. 80t

A: b. 50th

Q: Find the first and third quartiles for a week's temperatures from last year's summer, expressed in…

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Q: 29 randomly selected students were asked the number of movies they watched the previous week. The…

A: Frequency distribution is a table that display the observations and the frequencies of each of the…

Q: A student scored 75% in a quiz worth 75 points, 85% in a quiz worth 50 points, and 80% in a quiz…

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Q: A measure of tire wear is the percentage of tire groove lost by the tire since new. A senior JJ…

A: From the provided information,n = 15The data values are as follow:…

Q: You have a sample of 10 (sorted) scores: -15.5 -13.4 -12.7 -12.2 -12 -10 -9.1 -8.9 -7.9 -7.1…

A: From the provided information,Number of observations (n) = 10

Q: Find the mean (average) for the following set of numbers: x=10,24,29,19,17,1,6,14,8,6

A: From the given information we want to find the mean of the given data.

Q: Calculate the 75% percentiles, 25% percentiles, and the IQR for the following data:   9, 12, 20,…

A: Given : Observation 9 12 20 5 14 7 16 13