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Sophie [7]
2 years ago
6

Recall information from the previous task. One study of 91 bald eagle eggs found that the eggs had a mean length of 73.6 millime

ters and standard deviation of 2.9 millimeters.
One bald eagle egg was 74.9 millimeters long. The Z-score for this egg was 0.45.

Which statements correctly interpret the Z-score?

Choose two correct answers.


The length of this egg was 0.45 standard deviations above the mean length.

This egg was 0.45 millimeters longer than the mean.

This egg was longer than 45 percent of the eggs in the study.

This egg was longer than the mean by 0.45 standard deviations, or 1.3 millimeters.

The length of this egg was 0.45 times the mean.​
Mathematics
2 answers:
Nitella [24]2 years ago
8 0

Answer:

The person above is right and deserves brainliest.

The length of this egg was 0.45 standard deviations above the mean length.

This egg was longer than the mean by 0.45 standard deviations, or 1.3 millimeters.

(1 & 4)

ED2021

son4ous [18]2 years ago
4 0

Answer:

It’s 1 and 4

Step-by-step explanation:

I did the edge assignment

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QUICK!<br> A. –27<br> B. –3<br> C. 3<br> D. 27
Alex

Answer:

C. 3

Step-by-step explanation:

-9 * -1/3

= -9/ -3

A negative divided by a negative is a positive

9/3

3

7 0
3 years ago
A deck of cards with four suits; hearts, diamonds, spades, and clubs. you pick one card, put it back and thennpick another card.
Llana [10]

1. First, let us find the probability that the first card is a diamond.

Now, since we are given that there are four suits and there are, assumably, an equal number of cards in each suit, we can say that the probability of choosing a diamond card is 1/4. We can also write this out as such, where D = Diamond:

Pr(D) = no. of diamond cards / total number of cards

There are 52 cards in a deck, and 13 cards of each suit, thus:

Pr(D) = 13/52 = 1/4

2. Now we need to calculate the probability of not choosing a diamond as the second card.

In many cases, when given a problem that requires you to find the probability of something not happening, it may be easier to set it out as such:

Pr(A') = 1 - Pr(A)

ie. Pr(A not happening, or not A) = 1 - Pr(A happening, or A)

This works because the total probability is always 1 (100%), and it makes sense that to find the probability of A not happening, we take the total probability and subtract the probability of A actually happening.

Thus, given that we have already calculated that the probability of choosing a Diamond is 1/4, we can now set this out as such:

Pr(D') = 1 - Pr(D)

Pr(D') = 1 - 1/4

Pr(D') = 3/4

3. Now we come to the final step. To find the probability of something and then something else happening, we must multiply the two probabilities together. Thus, given that Pr(D) = 1/4 and Pr(D') = 3/4, we get:

Pr(D)*Pr(D') = (1/4)*(3/4)

= 3/16

Thus, the probability of choosing a diamond as the first card and then not choosing a diamond as the second card is 3/16.

7 0
3 years ago
Snow is falling at a rate of 2.5 inches per hour.At this rate, how long will it take 8 inches of snow to fall?
jeyben [28]

Answer:

It will take 3.2 hours for 8 inches of snow to fall.

Step-by-step explanation:

You can solve this be going "backwards".

You have 2.5 inches of snow falling per hour for x hours until you get 8 inches of snow, which can be represented like this:

2.5x=8  From here you being to solve by isolating x on one side of the equation. You would divide both sides by 2.5 to do this

2.5x=8

/2.5    /2.5

8 divided by 2.5 is 3.2 and you then get

x=3.2

It takes 3.2 hours for 8 inches of snow to fall

8 0
3 years ago
How can you find the area of a circle if you only know the circumference?
AnnyKZ [126]
Https://youtu.be/3y1U0sntOsI
7 0
3 years ago
What is the equivalent expression of y-0.32y
Dahasolnce [82]
Y - 0.32y = (1 - 0.32)y = 0.68y
5 0
3 years ago
Read 2 more answers
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