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alexira [117]
3 years ago
14

PLEASE HELP PICTURE IS SHOWN

Mathematics
1 answer:
Gnom [1K]3 years ago
4 0
D) Cannot be determined. There is not enough info shown to have a definitive answer.
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An ornithologist has 4 bird feeders at separate locations. She wonders if birds are equally likely to visit each of the feeders.
Marianna [84]

Answer:

the x² test statistic 13.71

Option a) 13.71 is the correct answer.

Step-by-step explanation:

Given the data in the question;

Feeder                     1      2      3       4

Observed visits; o_i  60   90   92    58

data sample = 300

Expected e_i = 300 / 4 = 75

the x² test statistic = ?

X^2_{stat = ∑[ (o_i - e_i)²/e_i]

X^2_{stat = [ (60 - 75)² / 75 ] + [ (90 - 75)² / 75 ] + [ (92 - 75)² / 75 ] + [ (58 - 75)² / 75 ]

X^2_{stat = [ 3 ] + [ 3 ] + [ 3.8533 ] + [ 3.8533 ]

X^2_{stat = 13.7066 ≈ 13.71

Therefore, the x² test statistic 13.71

Option a) 13.71 is the correct answer.

7 0
2 years ago
Which expressions show how 8 • 54 can be rewritten using the distributive property? Choose all answers that are correct.
irga5000 [103]
Answer choice B is using the distributive property.
6 0
3 years ago
If the venue needs to sell 86 tickets to break even, then how much money have they invested in the concert
lutik1710 [3]

Answer:

Step-by-step explanation:

5 0
3 years ago
A group of adults plus one child attend a movie at a movie theater. Tickets cost $9 for adults and $4 for children. The total co
egoroff_w [7]

Answer:

There is <u>8</u> adults and <u>1 </u>child

Step-by-step explanation:

<u>$78 - $6 = $72</u>

<u>$72 divided by 9 = 8</u>

you would add nine <u>8</u> times and add 6 to it then it would be $78
Hope this helps you! :)

6 0
2 years ago
The first table shows the teams with the four best records halfway through the season. The second table shows the full season re
Allisa [31]

Answer:

Step-by-step eThe first table shows the teams with the four best records halfway through the season. The second table shows the full season records for the same four teams. Which team had the best record during the second half of the season?

Record for the First Half of the Season Record for the Season

Teams Wins Loss Teams Wins Loss

1 26 14 1 59 21

2 27 13 2 27 13

3 25 15 3 25 15

4 24 16 4 24 16

Expert Answer

xplanation:

8 0
3 years ago
Read 2 more answers
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