The table shows the distribution of scores or 40 students on a Mathematics test. 10-12 13-15 6. Score 16-18 13 19-21 9 22-24 8 25-27 Frequency 4 (a) (b) Estimate the mean score obtained on the test. Estimate the probability that a student selected at random would score at most 15 marks on the test. (c) Using the scale of 1 cm to represent 1 unit on the frequency axis and 2 cm to represent 5 units on the score's axis, use graph paper to draw a frequency polygon to represent the distribution of scores shown in the table.

The following frequency distribution represents the scores on a math test. Find the class midpoint of scores for the interval 40-59. Number of Students 2 4 Scores 0-19 20-39 40-59 60-79 80-99 OA 49.0 OB. 49.5 OC. 48.5 OD. 50.5 655 C

I tried the two last choice both of them are wrong.

Use the Histogram tool to develop a frequency distribution and histogram for the number of months as a customer of the bank in the data below. Compute the relative and cumulative relative frequencies and use a line chart to construct an ogive.   Complete the frequency distribution for the months as a​ customer, and compute the relative and cumulative relative frequencies. ​(Type integers or decimals rounded to three decimal places as​ needed.) Bins Frequency Relative Frequency Cumulative Relative Frequency 10 enter your response here   enter your response here   enter your response here   20 enter your response here   enter your response here   enter your response here   30 enter your response here   enter your response here   enter your response here   40 enter your response here   enter your response here   enter your response here   50 enter your response here   enter your response here   enter your…