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2 years ago

Help please. i need help badly please

Mathematics

1 answer:

patriot [66]2 years ago

5 0

Step-by-step explanation:

estimate the sums and round the numbers to the neares hundred

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You coach a basketball ball team of 12 players; 5 players must be on the floor at all times; Figuring that every player can play

makvit [3.9K]

The function "choose k from n", nCk, is defined as
nCk = n!/(k!*(n-k)!) . . . . . where "!" indicates the factorial

a) No position sensitivity.
The number of possibilities is the number of ways you can choose 5 players from a roster of 12.
12C5 = 12*11*10*9*8/(5*4*3*2*1) = 792
You can put 792 different teams on the floor.

b) 1 of 2 centers, 2 of 5 guards, 2 of 5 forwards.
The number of possibilities is the product of the number of ways, for each position, you can choose the required number of players from those capable of playing the position.
(2C1)*(5C2)*(5C2) = 2*10*10 = 200
You can put 200 different teams on the floor.

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3 years ago

The National Association of Realtors reported that 26% of home buyers in the state of Florida are foreigners. A random sample of

Paladinen [302]

Answer:

Hypothesis

$H_0: \pi=0.26\\\\H_a: \pi\neq 0.26$

P-value = 0.078

Conclusion: The null hypothesis is rejected. There is enough evidence to claim that the proportion of foreigners home buyers is different from 26%.

Step-by-step explanation:

We will perform a hypothesis test on a proportion.

The null hypothesis states that 26% of home buyers are foreigners.

The alternative hypothesis states that the proportion is different than 26%.

$H_0: \pi=0.26\\\\H_a: \pi\neq 0.26$

The significance level is α=0.10.

The sample proportion is:

$p=x/N=20/110=0.182$

The standard error is:

$\sigma_p=\sqrt{\frac{\pi(1-\pi)}{n} }=\sqrt{\frac{0.26*0.74}{110}} =\sqrt{\frac{0.1924}{110} } =\sqrt{0.00175} \\\\\sigma_p=0.042$

Then, we can calculate the z-statistic as:

$z=\frac{p-\pi+0.5/N}{\sigma_p} =\frac{0.182-0.26+0.004}{0.042}=- \frac{0.074}{0.042}= -1.762$

The P-value can be calculated as:

$P-value=2*P(z$

The P-value is smaller than the significance level, so the effect is significant.

The null hypothesis is rejected. There is enough evidence to claim that the proportion of foreigners home buyers is different from 26%.

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4 years ago

If 9% of a number is 75, find 3% of that number.

andrezito [222]

Answer:

its 3

Step-by-step explanation:

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3 years ago

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If points S, O, and N are collinear, how many lines do they determine?

Gekata [30.6K]

It is only one line because a<span> set of points is collinear if they lie on a single straight line. This is very common to be applied in mathematics</span>

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3 years ago

What is the polynomial of 5x3-4x2+7x

olga nikolaevna [1]

Answer:

Step-by-step explanation:

7+7x

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3 years ago