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Natalija [7]
3 years ago
15

Preliminary data analyses indicate that you can reasonably apply the z-interval procedure. Find a 90% confidence interval for th

e mean number of tongue flicks per 20 minutes for all juvenile common lizards. Assume a population standard deviation of 190.0. Note: The sum of the data is 8279.

Mathematics
1 answer:
murzikaleks [220]3 years ago
7 0

Answer:

The CI of the 'true mean= [455, 609]

Step-by-step explanation:

Please see attachment.

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400 ml squash is made by mixing 50 ml of cordial with water. what fraction of the drink is water?give your answer in its simples
Tasya [4]

squash = cordial + water

400 ml = 50 ml + x ml

350 ml = x ml

Therefore, 350 ml are water.

350 ml / 400 ml = 0.875 = \frac{350}{400} = \frac{35}{40} = \frac{7}{8}

So the answer is 7 / 8

5 0
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What is 24 divided by 2 plus 8
grin007 [14]
24/2 equals 12

12 + 8 = 20
7 0
3 years ago
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Mrs.smith has 5 times many markers as colored pencils. The total number of markers and colored pencils is 54. How many markers d
Slav-nsk [51]

Answer:

270 Markers

Step-by-step explanation:

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6 0
2 years ago
Weber's Mail Manufacturing is a company that produces chain mail. Their most popular product is saw-cut metal links that hobbyis
mariarad [96]

Answer:

Their expenses and sales will both equal at 200 ounces.

Step-by-step explanation:

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Break even point in ounce = Fixed cost / Contribution per ounce

Where;

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Contribution per ounce = Selling price per ounce - Cost per ounce = $4 - $1 = $3

Substituting the values into equation (1), we have:

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8 0
3 years ago
X² – 2xy + y², x² + 2xy + y², 4x² – xy + y², x² – y²​
lorasvet [3.4K]

Answer:

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Step-by-step explanation:

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2 years ago
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