30 50 90 100 110 120 QUESTION 5 If the same number of students in the upper 25% and the lower 25% choose the correct answer to a multiple-choice question, what is the index of difficulty for the question? O a. 0 O b.0.5 O. 1 d. cannot determine from the information given

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A: The given table is -

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A: PCA is the method to reduce the dimension of given datasets into smaller dimension datasets in such…

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A: total number of students= 150 and, no of girls=87

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A:

Q: 9 10 11 12 13 14 15 16 17 18 19 20 data 8 Based on the boxplot above, identify the 5 number summary

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A:

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A: For the solution follow the next steps.

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Q: QUESTION 6 4c) For the following scores, find the mode 43, 32, .64, 21, 29, 51, .89, .64

A: Given data, 0.43 0.32 0.64 0.21 0.29 0.51 0.89 0.64.

Q: + 10 11 12 13 16 15 14 data 17 18 19 Based on the boxplot above, identify the 5 number summary

A: Given data

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A:

Q: 12 13 14 15 16 17 18 19 20 data Based on the boxplot above, identify the 5 number summary

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Q: 1.11 3? 5.62 7.09 Look at the relative frequency table above. What is P(X = 3)?

A: We know that,  ∑p = 1 p + 0.11 + 0.62+0.09 = 1 p = 1 - 0.82 p = 0.18

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A: Suppose there is a series a1,a2,a3,..., then arithmetic mean for the series is defined as, AM=…

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A: Fill in the blanks as shown it is just substraction and addition.

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A: The frequency table for the given data is shown below:

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A: Given : n=36

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A:

Q: n a student survey, sixty part-time students were asked how many courses they were taking this term.…

A: Relative frequency = frequency / total frequency

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A: Given What number is missing from the​ table?(find the missing frequency)   Year in College…

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A: Note: As per my policy i can answer only one question. kindly repost the remaining questions 1)…

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Q: Find the mode of the following set of scores. 14 11 15 9 11 15 11 7 13 12

A: Ans- Find the mode of the following set of scores. 14 ,11, 15 ,9 ,11,15, 11, 7, 13, 12

Q: The following data set outlines the scores students had on an Algebra test. 40 40 41 41 41 41 42 43…

A: What is frequency ?  In statistics , the frequency of an event is the number of times an observation…

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A: AS PER THE GUIDELINES  I AM SOLVING 1ST QUESTION ONLY (BOTH PARTS ) FOR 2nd PLEASE ASK AS SEPARATE…

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A: Given Information: Calculations:

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Q: 17 18 19 14 15 16 data 10 11 12 13 20 Based on the boxplot above, identify the 5 number summary

A:

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Q: 9 10 11 12 13 14 15 16 17 data 7 8 Based on the boxplot above, identify the 5 number summary

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Q: ... 96 99 81 47 71 78 72 34 50 66 94 85 77 82 99 99 67 68 The grades of a sample of 9 students on a…

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Q: In a national survey conducted by the Centers for Disease Control in order to determine health-risk…

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Q: 2. Consider the foot length and foot width of six female grade 4 students in Morning Star Montessori…

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Q: Lower Upper cf rf crf 10 14 9 0.18 0.18 15 19 7 16 0.14 0.32 20 24 10 26 0.2 0.52 25 29 7 33 0.14…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…