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
Answer:
Geela would need 9 yellow parts
Explanation:
Originally, the Geela needed more yellow than red and the difference was 4 parts.
6-2=4 parts
4 parts + 5 parts of yellow = 9 yellow parts.
Answer:
<u>9.66 x 10⁴ minutes</u>
Step-by-step explanation:
To convert seconds into minutes, simply divide by 60.
=> 5.8 x 10⁶ / 60
=> 580 x 10⁴ / 60
=> 29 x 10⁴ / 3
=> <u>9.66 x 10⁴ minutes</u>
B=3
Hope this helps.
Correct me if I’m wrong.
Answer:
20
Step-by-step explanation:
Basically, Yout take 60 and divide it by the number 3 and you get 20. Doing the inverse operation (opposite).