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omeli [17]
3 years ago
15

Help I got until 4:05

Biology
1 answer:
Umnica [9.8K]3 years ago
5 0
Mitochondria ? I think so
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Read 2 more answers
A distribution of class scores on a test is approximately normal with a mean of 75 and a
Anna [14]

Answer:

O A. No, 10.6% of the class scored above her test score

Explanation:

Using the standard normal distribution (Z score) to solve this problem. The formula is as follows:

Z = x - μ/σ

Where;

σ = standard deviation

μ = mean score

x = Edna's score

According to the information given in this question:

σ = 8

μ = 75%

x = 85%

Z = 85 - 75/8

Z = 10/8

Z = 1.25

Using the table of normal distribution probabilities, we check for Z score of 1.2 under 5 = 0.8944

This means that Edna's percentage score is 89.44%. Hence, (100 - 89.44) = 10.56% is above Edna's score in the class

Approximately, 10.6% of the class scored above Edna's test score, meaning that she is not among the top 10% of her class.

5 0
3 years ago
PLZ HELP!! WILL MARK!
AlekseyPX
Cetaceans are evolved from mammals ! Cetaceans are thought to have evolved during the Eocene or earlier, sharing a closest common ancestor with hippopotamuses.

They are descendents of Mammals !! And that four legged is hippo !!

So I think and sure of Mammals ....To be the answer !!
4 0
4 years ago
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