Answer:
2
Step-by-step explanation:
Answer:
Lowest Price - Store B
Middle Price - Store C
Highest Price - Store A
Step-by-step explanation:
Store A Price - $22.50
25 x 0.1 = 2.5
25 - 2.5 = 22.5
Store B Price - $21.60
27 x 0.2 = 5.4
27 - 5.4 = 21.6
Store C Price - $22.1
26 x 0.15 = 3.9
26 - 3.9 = 22.1
The answer is D. 877 + 228 + 34 + 104
The new mean and standard deviation is 26 and 15, when each score in data set is multiplied by 5 and then 7 is added.
According to the question,
Original mean is 10 and original standard deviation is 5 . In order to find to new mean and standard deviation when each score in data set is multiplied by 5 and then 7 is added.
First "change of scale" when every score in a data set is multiplied by a constant, its mean and standard deviation is multiplied by a same constant.
Mean: 10*3 = 30
Standard deviation: 5*3 = 15
Secondly "change of origin" when every score in a data set by a constant, its mean get added or subtracted by the same constant and standard deviation remains constant.
Applying change of origin in the above mean and standard deviation
Mean: 30 - 4 = 26
Standard deviation: Remains same = 15
Hence, the new mean and standard deviation is 26 and 15, when each score in data set is multiplied by 5 and then 7 is added.
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