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Solnce55 [7]
3 years ago
10

A survey by the American Veterinary Medical Association found that out of 120 families surveyed, 18 owned a bird. Fifteen years

ago, a similar study found that only 5 families out of 100 surveyed had a bird. Are the validity conditions for a two-sample z-test/interval adequately met
Mathematics
1 answer:
sveticcg [70]3 years ago
5 0

Answer:

Step-by-step explanation:

The assumptions include:

The samples from each population must be independent of one another: this was adequately met.

The populations from which the samples are taken must be normally distributed: this was not talked about

The population standard deviations must be known: not known

or the sample sizes must be large (i.e. n1≥30 and n2≥30: true

The validity conditions for a two-sample z-test/interval were not all adequately met

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9x^2 - 16x + 60 = 0
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Answer:

My answer is in the file.

Step-by-step explanation:

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2 years ago
Plssssss helpp :'Dd<br> If JL = 5x + 1 and MK = 8x - 32, find JL and NK.<br><br> JL =<br><br> NK =
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Answer:

  • 56 units, 28 units

Step-by-step explanation:

<u>Rectangle has equal diagonals:</u>

  • JL = MK

<u>Substitute and solve for x:</u>

  • 5x + 1 = 8x - 32
  • 8x - 5x = 1 + 32
  • 3x = 33
  • x = 11

<u>Find the length of the diagonals:</u>

  • JL = MK = 5*11 + 1 = 56 units

<u>Diagonals of the rectangle bisect each other:</u>

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3 years ago
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3 years ago
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What is the angle of rotation from / to /? Assume that the center of rotation is the origin. A. 90° counterclockwise B. 180° cou
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D.360 Countercloscwise
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3 years ago
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After dinner 1-3 of the corn bread is left suppose 2 friends want to share it equally what fraction names how much of the whole
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Answer:

Each friend will get  \frac{1}{18} of whole pan of corn bread

Step-by-step explanation:

As given,

Corn bread left = \frac{1}{3}

Total number of friends = 2

So the left bread will divide into 2 parts

So, each person will get = \frac{1}{2} ( \frac{1}{3} ) = \frac{1}{6} of the left bread

Now,

Left bread = \frac{1}{3} of whole bread

And

Each person get  =  \frac{1}{6} of the left bread

                            = \frac{1}{6} ×\frac{1}{3} of whole bread

                            = \frac{1}{18}of whole bread

∴ we get

Each friend will get  \frac{1}{18} of whole pan of corn bread

8 0
3 years ago
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