98 isnt a prime, which means that it is a composite number
Answer:
a)= 2
b) 6.324
c) P= 0.1217
Step-by-step explanation:
a) The mean of the sampling distribution of X`1- X`2 denoted by ux`-x` = u1-u2 is equal to the difference between population means i.e = 2 ( given in the question)
b) The standard deviation of the sampling distribution of X`1- X`2 ( standard error of X`1- X`2) denoted by σ_X`1- X`2 is given by
σ_X`1- X`2 = √σ²/n1 +σ²/n2
Var ( X`1- X`2) = Var X`1 + Var X`2 = σ²/n1 +σ²/n2
so
σ_X`1- X`2 =√20 +20 = 6.324
if the populations are normal the sampling distribution X`1- X`2 , regardless of sample sizes , will be normal with mean u1-u2 and variance σ²/n1 +σ²/n2.
Where as Z is normally distributed with mean zero and unit variance.
If we take X`1- X`2= 0 and u1-u2= 2 and standard deviation of the sampling distribution = 6.324 then
Z= 0-2/ 6.342= -0.31625
P(-0.31625<z<0)= 0.1217
The probability would be 0.1217
-10 and 2
-10 x 2 = -20
-10 + 2 = -8
The gravity is 1.5m\s^2
Further explanation:
The weight of any object is given by the product of mass and gravity of the object
Let
m denote the mass of object
g be the gravity
and
w be the weight
Then the statement can be mathematically written as:
Given
m=300kg
w=450N
Putting the values of m and w into the formula
The gravity is 1.5m\s^2
Keywords: Mass, Gravity
Learn more about gravity at:
#LearnwithBrainly
Label the width: 4ft
Label the length: 12ft (4ft for each segment).
Perimeter=12+12+4+4=32ft
