Answer:
- Range = 1.2 , variance = 10.153, standard deviation = 3.18611.
- No.
Step-by-step explanation:
The foot lengths in inches for 11 randomly selected people taken in 1988. are
First, we need to arrange the given data in ascending order.
1. To find the range<u>,</u> we need to determine the maximum value and the minimum value in the given sample, and to subtract them. The maximum value is 9.7 and the minimum value is 8.5. Therefore,
The variance is given by
where
In this case, . Therefore,
Hence, the variance is
Now, we can calculate the standard deviation.
2. No, this statistics are not representative of the current population of all people, since they are measured for the 1988. population.
Answer:
C
Step-by-step explanation:
If you divide the amount of children by 3 you get 82 then times in by 2 you get 264 which is the number of answers
Answer:X=31
Step-by-step explanation: Have a brilliant day! - Lily ^_^
Answer:
(x − 5) (2x + 3)
Step-by-step explanation:
2x² − 7x − 15
Factor using AC method.
2 × -15 = -30
Factors of -30 that add up to -7 are -10 and 3.
Divide by 2 and reduce: -10/2 = -5/1, 3/2
The factors are x − 5 and 2x + 3.
(x − 5) (2x + 3)
Cost price per bottle of juice = $1.10
Selling price per bottle of juice = $2.50
Profit per bottle of juice = $2.50 - $1.10 = $ 1.40
Let B be the number of bottles needed to sell in one day in order to equal its daily costs.
$1200 = $1.40B
857.14285714285714 = B
858 = B (round off to the nearest bottle)
The company must sell 858 bottles of juice in one day in order to equal its daily cost.
Hope this helps! =)