To get an average of 70 on his test Paul needs to score at least 66 on his third test
Answer:
the answer is 20% so good luck
Answer:
Null hypothesis is rejected. Standard deviation is > 8 miles per hour
Step-by-step explanation:
σ [Population standard deviation] = 8 , s [sample standard deviation] = s
n [no of items] = 8
H0 [Null] : σ = 8 ; H1 [Alternate - Right Tail] : σ > 8
χ2 = (n - 1) . s^2 / σ^2
= 49 x (10.5)^2 / 82 = 5402.25 / 64
χ2 = 84.410
df [degree of freedom] = n -1 = 50 - 1 = 49
P value (χ^2 49 > 84.410) = 0.00125
p = 0.0013
p < α ie 0.05
So, H0 is rejected
Hence we state that standard deviation is > 8 miles per hpur
Let
x-------> the whole number
y------> the decimal number
we know that
------> equation 1
assume the value of x and then calculate the value of y
Let
x=280
solve for y in the equation 1
substitute the value of x
therefore
<u>the expression is equal to</u>
280*0.001=0.28
