Hello, I have a Maths Question I have tried and tried to get my head around these but no joy

Please can I learn from you any help would be greatly appreciated

I have uploaded the questions, ideally I need help with Question 2C and Question 3

I will provide a link to the Question3 in the question comments

Many Thanks in Advance

00:34 - Hi what information is missing please I have provided you a Dropbox link above with access to the questions that you asked for please let me know what you require and I will provide it many thanks

(C) (d) (f) (s) COpy and complete the following table using the datasets given above to work out the missing values. [4] Number of minutes to complete the test Industry standard In-house Minimum (Min) Lower quartile (Q1) 435 Median 441.5 Upper quartile (Q3) 452 .5 Maximum (Max) 441.85 11.7 Interquartile range (IQR) Range Size of dataset (n) 20 20 (i) Identify the two measures of location from the table in part (c). Use both of these measures to determine which of the two datasets has the higher location. [4] (ii) Identify the three measures of spread from the table in part (c). Which of the two datasets has the wider spread, as measured by each of these three measures? [4] (i) The researcher concludes that the in-house software package runs quicker than the industry standard software package. Is this a reasonable conclusion? Explain your answer briey. [2] (ii) Which stage of the statistical investigation is used in part (e) (i)? Briey justify your answer. [2] The researcher notices that the industry standard software package entry for the ninth test was a typing error. The correct value should have been 456. The revised mean and median for the industry standard software package data with the correct value for the ninth test are given in the following table. Industry standard software package With typing error With correct value Mean ] 470.05 ] 460.05 Median ] 461 ] 458.5 What is the eifect on the mean and on the median of including the typing error instead of the correct value? Explain why this happens. [2] Would having the correct value affect the researcher's conclusion in part (e) (i)? Explain your answer briey. [2] In this question, you are asked to comment on a student's incorrect attempt at answering the question detailed below. The question (i) Simplify the following expression as far as possible, showing all your working: 9y - 14 - 3y + 50. (ii) Solve the following equation, showing all your working: g (t - 4 ) = 12. The student's incorrect attempt: (i ) Given: 9y- 14- 3y+50 Group like terms: = 9y- 3y- 14+50 Collect like terms: = by + 36 SUBtract 36: - 36 = by Divide By 6: - b= y The solution is y = -b. (ii ) Given: 3 (t - 4 ) = 12 Clear the fraction: 3 (t - 32 ) = 96 Multiply By 3: 3t - 96 = 96 Add 96: 3t = 192 Divide By 3: t = 64 The solution is t = 64. (a) The student has made a mistake in both parts of their attempt. Identify these mistakes and explain, as if directly to the student, why, for each mistake, their reasoning is incorrect. [4] (b) Write out your own solution to each part of the question, explaining your working. [6]