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3 years ago

What is the probability that the family has two dogs and two cats

Mathematics

2 answers:

Sonbull [250]3 years ago

8 0

Answer:

1:4

Step-by-step explanation:

kow [346]3 years ago

6 0

Answer:

The answer is 1:4

Step-by-step explanation:

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How do you turn 20/10 in to a mixed fraction

Galina-37 [17]

Divide 20 by 10 you get 2 wholes with no remainder so your answer is 2

8 0

2 years ago

(a) Find the size of each of two samples (assume that they are of equal size) needed to estimate the difference between the prop

zalisa [80]

Answer:

(a) The sample sizes are 6787.

(b) The sample sizes are 6666.

Step-by-step explanation:

(a)

The information provided is:

Confidence level = 98%

MOE = 0.02

n₁ = n₂ = n

$\hat p_{1} = \hat p_{2} = \hat p = 0.50\ (\text{Assume})$

Compute the sample sizes as follows:

$MOE=z_{\alpha/2}\times\sqrt{\frac{2\times\hat p(1-\hat p)}{n}$

$n=\frac{2\times\hat p(1-\hat p)\times (z_{\alpha/2})^{2}}{MOE^{2}}$

$=\frac{2\times0.50(1-0.50)\times (2.33)^{2}}{0.02^{2}}\\\\=6786.125\\\\\approx 6787$

Thus, the sample sizes are 6787.

(b)

Now it is provided that:

$\hat p_{1}=0.45\\\hat p_{2}=0.58$

Compute the sample size as follows:

$MOE=z_{\alpha/2}\times\sqrt{\frac{\hat p_{1}(1-\hat p_{1})+\hat p_{2}(1-\hat p_{2})}{n}$

$n=\frac{(z_{\alpha/2})^{2}\times [\hat p_{1}(1-\hat p_{1})+\hat p_{2}(1-\hat p_{2})]}{MOE^{2}}$

$=\frac{2.33^{2}\times [0.45(1-0.45)+0.58(1-0.58)]}{0.02^{2}}\\\\=6665.331975\\\\\approx 6666$

Thus, the sample sizes are 6666.

7 0

2 years ago

What is an equivalent expression of -1/2(-2x+4y

Mice21 [21]

Answer:

x−2y

Step-by-step explanation:

you meant to put a parenthesis at the end right?

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2 years ago

The procluct of q and y digided by the sum of 8 and X

ikadub [295]

Answer: do you have any of the values?

Step-by-step explanation:

4 0

3 years ago

1 hundreds +5 tens +12 ones

charle [14.2K]

<span>1 hundreds + 5 tens + 12 ones

= 100 + 50 + 12

= 162</span>

8 0

2 years ago

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What is the probability that the family has two dogs and two cats​

What is the probability that the family has two dogs and two cats