1. The mean is calculated using:
(9.4 + 17 + 7.3 + 7 + 16.1 + 5.4 + 5.9 + 8.5 + 4.2 + 9.2)/ 10
= 9
2. The standard deviation is 4.31
3. The years are 1996, 1997, 1999-200
<span>c) 1996 and 1997
</span>
4. The median is 7.9
Step-by-step explanation:
what is the question you are just showing us the lesson and modle
Answer:
Step-by-step explanation:
Nora worked in her yard for 2 hours. She mowed for 45 minutes. We would convert the 45 minutes to hours.
60 minutes = 1 hour
45 minutes = 45/60 = 3/4 hours
She raked for 33 minutes. Converting 33 minutes to hours,
33 minutes = 33/60 = 11/20
She weeded the garden for the rest of the time.
Time spent on weeding the garden = total time spent in the garden - sum of the time spent on mowing and raking.
Time spent on weeding = 2 - (3/4+11/20) = 2 - 26/20
= 14/20 = 0.7 hours
The percentage of Nora's time working in her yard that was spent weeding the garden will become
0.7/2 × 100
= 35%
Answer:
50
Step-by-step explanation:
1. Plug in what you know, if t=5 and u=10 replace the variables for their corresponding numbers.
2. 5(10)=50