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13 Mar 2025, 20:55
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Dropdown 1: between 7 and 7.5
Dropdown 2: 30%
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
74% (02:17) correct
26%
(02:26)
wrong
based on 546
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As part of a study on the napping habits of adults, several scientists asked 40 individuals who nap frequently—20 men and 20 women—to record the duration of their naps for one month. These individuals were also asked to record the amount of sleep they get at night. For the purpose of the study, the accepted ideal nap length was set at 10 to 20 minutes per nap. This length has been shown to help combat fatigue and make one feel more alert. The chart above shows the average nap duration and average nighttime sleep length for each of the individuals.
For each statement, select the option from the drop-down menu that completes the statement as accurately as possible according to the information provided.
A. Of the women whose average nap length was in the accepted ideal range, the greatest number received an average of hours of nighttime sleep .
B. Of the men in the survey, of them napped, on average, for more than 30 minutes.
Attachment:
1 (4).jpg [ 59.96 KiB | Viewed 2859 times ]
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Dropdown 1: between 7 and 7.5
Dropdown 2: 30%
poojaarora1818
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13 Mar 2025, 21:36
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Solution :
1. Of the women whose average nap length was in the accepted ideal range, the greatest number received an average of hours of nighttime sleep between 7 and 7.5
As we can see the greatest average nap length is 10 to 20 minutes per nap falling between 7 and 7.5.
The no. of women whose average Duration of Nighttime Sleep is between 6.5 to 7 is 1
The no. of women whose average Duration of Nighttime Sleep is between 7 to 7.5 is 4
The no. of women whose average Duration of Nighttime Sleep is between 7.5 to 8 is 2
2. Of the men in the survey, 30% of them napped, on average, for more than 30 minutes.
total men napped more than 30 minutes/Total no. of men = 6/20 * 100 = 30%
1. Of the women whose average nap length was in the accepted ideal range, the greatest number received an average of hours of nighttime sleep between 7 and 7.5
As we can see the greatest average nap length is 10 to 20 minutes per nap falling between 7 and 7.5.
The no. of women whose average Duration of Nighttime Sleep is between 6.5 to 7 is 1
The no. of women whose average Duration of Nighttime Sleep is between 7 to 7.5 is 4
The no. of women whose average Duration of Nighttime Sleep is between 7.5 to 8 is 2
2. Of the men in the survey, 30% of them napped, on average, for more than 30 minutes.
total men napped more than 30 minutes/Total no. of men = 6/20 * 100 = 30%
Bismuth83
14 Mar 2025, 22:00
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1. With the knowledge that the answer choices are increments of half an hour and the accepted range is between 10 to 20 minutes, we are essentially looking for which box has the most amount of women.
This is clearly between 7 and 7.5 hours since it has 4 women.
2. All of the circles above the vertical for 30 minutes represents the number of men who had naps, on average, for more than 30 minutes.
This is 6 and since the total number was 20, the percentage will be \(\frac{6}{20} * 100\% = 30\%\).
3. Our answer will be: D1 - between 7 and 7.5 hours and D2 - 30%.
unnamed (2).jpg [ 109.04 KiB | Viewed 2270 times ]
unnamed (3).jpg [ 94.62 KiB | Viewed 2224 times ]
This is clearly between 7 and 7.5 hours since it has 4 women.
2. All of the circles above the vertical for 30 minutes represents the number of men who had naps, on average, for more than 30 minutes.
This is 6 and since the total number was 20, the percentage will be \(\frac{6}{20} * 100\% = 30\%\).
3. Our answer will be: D1 - between 7 and 7.5 hours and D2 - 30%.
Attachment:
unnamed (2).jpg [ 109.04 KiB | Viewed 2270 times ]
Attachment:
unnamed (3).jpg [ 94.62 KiB | Viewed 2224 times ]
