Pls answer both question properly.. Fastest answer will be marked Brainliest
Answers
Given :-
The mean of 10 observations was calculated as 45.
It was detected on rechecking that the value of 40 was wrongly copied as 10.
To Find :-
What is the correct mean.
Formula Used :-
\clubsuit♣ Mean Formula :
\begin{gathered}\footnotesize\mapsto \sf\boxed{\bold{\pink{Mean =\: \dfrac{Sum\: of\: Observations}{Total\: Number\: of\: Observations}}}}\\\end{gathered}
↦
Mean=
TotalNumberofObservations
SumofObservations
Solution :-
First, we have to find the sum of observations :
Given :
Mean = 45
Total Number of observations = 10
According to the question by using the formula we get,
\implies \sf 45 =\: \dfrac{Sum\: of\: Observations}{10}⟹45=
10
SumofObservations
By doing cross multiplication we get,
\implies \sf Sum\: of\: Observations =\: 45(10)⟹SumofObservations=45(10)
\implies \sf Sum\: of\: Observations =\: 45 \times 10⟹SumofObservations=45×10
\implies \sf\bold{\purple{Sum\: of\: Observations =\: 450}}⟹SumofObservations=450
Now,
\bigstar★ It was detected on rechecking that the value of 40 was wrongly copied as 10.
Hence, the sum of observations will be :
\implies \sf Sum\: of\: Observations =\: 450 - 10 + 40⟹SumofObservations=450−10+40
\implies \sf Sum\: of\: Observations =\: 450 + 30⟹SumofObservations=450+30
\implies \sf \bold{\green{Sum\: of\: observations =\: 480}}⟹Sumofobservations=480
Now, we have to find the correct mean :
Given :
Answer:
1.No, the biodiversity is not as high in a city park as it is in a farm or rainforest because, in an urban city park, only the species with the most general habitat and resource requirements have generally remained in the urban park.
2.Zoological parks or zoo and wildlife sanctuaries are both areas constructed for the conservation of animals. While wildlife sanctuaries are natural habitats of the animals, in zoos they are kept in captivity. Even with the differences, the main aim of both zoos and wildlife sanctuaries is to protect animals. Their norms and regulations might vary but their purpose is the same.
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