Mathematics

Question

The average number of minutes Martina spent on homework for a week in November was 32 minutes, with a mean absolute deviation of 3 minutes. With this information, which statement is true?

A. On average, Martina spent between 29 and 35 minutes on her homework.

B. 
Martina spent between 29 and 35 minutes each day on her homework.

C. 
Martina's mean time spent on homework was 35 minutes.

D. Martina's mean time spent on homework was 29 minutes.

2 Answer

  • I just did this and got it right...
    the REAL answer to your question is
    A
    why? bc the person above or below me didnt put on average 
  • Answer:

    A. On average, Martina spent between 29 and 35 minutes on her homework.

    Step-by-step explanation:

    Assuming that the minutes Martina spent on her homework for a week in November was normally distributed, then the 68.1% of the days she studied, she spent between 29 and 35 minutes on her homework, that is, the range (mean - standard deviation, mean + standard deviation) represents the 68.1% of the cases.

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