100 / 20 = 5
5 * 7 = 35
So the dog ate 35% of it
Answer:
61.6 ft/s
Step-by-step explanation:
Sample size= n= 84
sample mean= x = 107 s
population standard deviation =σ= 11.7
As, population standard deviation is given so we use the estimate:
x(+/-) z(α/2)(σ/√n)
At 99% Confidence interval means significance level is α=1-0.99= 0.01
So,
α/2=0.005
Now, z at α/2=0.005
z= 2.576
Now, by putting values
107(+/-)((2.576)(11.7/√84))
( 107-((2.576)(11.7/√84)), 107+((2.576)(11.7/√84)) )
(103.7, 110.288)
Answer:
Step-by-step explanation:
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Answer:
sorry but i dont understand if i did then i would help u :(
Step-by-step explanation:
