Answer:
Mean Absolute Deviation (MAD): 1.6
Answer:
A=5 units squared
Step-by-step explanation:
A=1/2(l*w)
A=1/2(5*2)
A=1/2(10)
A=5
Answer:
The answer (using BEDMAS) is 27
Step-by-step explanation:
The equation 9 x [(18+2) ÷ 5 - 1] is solved using BEDMAS or PEDMAS
First solve the smaller bracket
18 + 2 = 20
So then it becomes 9 x [20 ÷ 5 - 1]
Do the division inside the bracket next
20 ÷ 5 = 4
Then it becomes 9 x [4 - 1]
Do then subtraction within the bracket
4 - 1 = 3
Then it becomes 9 x 3
Finally solve 9 x 3 which equals 27
Answer:
The mean apple weight is different from 8oz
Step-by-step explanation:
Claim : An apple farm claims that the average weight of all their apples is 8oz.

n = 20
Standard deviation =s = 0.95
Since n < 30
So we will use t-test
x = 7.77

Substitute the values :


Since we are not given the significance level
So, we will take 5%
So,α = 0.05
Degree of freedom = df = n-1 = 20-1 = 19
So, using t table

Since t critical > t statistic
So, we accept the null hypothesis.
So, The mean apple weight is different from 8oz
The amount eroded at millimetre per hour is 0.002283
In order to determine the answer, take the following steps :
1. determine how many hours are in a year
there are 24 hours in a day
There are 365 days in a year
Number of hours in a year = number of days in a year x number of hours in a day
24 x 365 = 8760 hours
2. convert centimetre to millimetre
1 cm = 10mm
2cm x 10 = 20mm
3. Amount eroded per hour in millimetres = amount eroded per year / total number of hours in a year
20 / 8760 = 0.002283 millimetre / hour
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