Answer:
Paedtricians claim isn't true.
Step-by-step explanation:
The hypothesis :
H0 : σ = 7
H0 : σ > 7
The test statistic ; χ² :
χ² = [(n - 1) * s²] ÷ σ²
n = 25 ; s = 4.3, σ = 7
χ² = [(25 - 1) * 4.3²] ÷ 7²
χ² = [(24 * 4.3²] ÷ 49
χ² = 443.76 / 49
χ² = 9.056
At α = 0.01 ; critical value = 42.980
Since critical value > test statistic, we fail to reject the null, H0.
Answer:
The square root of 2 over 2
Step-by-step explanation:
Rewrite then factor as a difference of cubes:
1 - 64<em>x</em>³ = 1³ - (4<em>x</em>)³
= (1 - 4<em>x</em>) (1² + 4<em>x</em> + (4<em>x</em>)²)
= (1 - 4<em>x</em>) (1 + 4<em>x</em> + 16<em>x</em>²)
Answer:
Step-by-step explanation:
Alright, lets get started.
The total surface area of rectangular pyramid will be the area of all four faces and area of base.
The faces are triangular, so area will be = 
Area of face = 
Another face area = 
Each face has its similar another face. So total area of faces will be = 
Area of base = 
So total surface area = 
square feet
Hence the total surface area is 596 square feet. : Answer
Hope it will help :)
Answer:
2.6457513111
Step-by-step explanation:
when seven is put into the square root it doesn't come out perfectly even instead it comes out as a decimal
