How is adding polynomials different from subtracting like terms?

1 answer:

6 0

Adding and subtracting polynomials may sound complicated, but it's really not muchdifferent from adding and subtracting numbers. Any terms that have the same variables with the same exponents can be combined. Combine like terms, paying close attention to the signs.

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According to Brad, consumers claim to prefer the brand-name products better than the generics, but they can't even tell which is

max2010maxim [7]

Answer:

a. There is not enough evidence to support the claim that the proportion that correctly identifies the chip is significantly smaller than 50%.

b. Test statistic z=-1.001

Step-by-step explanation:

This is a hypothesis test for a proportion.

The claim is that the proportion that correctly identifies the chip is significantly smaller than 50%.

Then, the null and alternative hypothesis are:

$H_0: \pi=0.5\\\\H_a:\pi$

The significance level is 0.01.

The sample has a size n=199.

The sample proportion is p=0.462.

$p=X/n=92/199=0.462$

The standard error of the proportion is:

$\sigma_p=\sqrt{\dfrac{\pi(1-\pi)}{n}}=\sqrt{\dfrac{0.5*0.5}{199}}\\\\\\ \sigma_p=\sqrt{0.001256}=0.035$

Then, we can calculate the z-statistic as:

$z=\dfrac{p-\pi+0.5/n}{\sigma_p}=\dfrac{0.462-0.5+0.5/199}{0.035}=\dfrac{-0.035}{0.035}=-1.001$

This test is a left-tailed test, so the P-value for this test is calculated as:

$\text{P-value}=P(z$

As the P-value (0.16) is greater than the significance level (0.01), the effect is not significant.

The null hypothesis failed to be rejected.

There is not enough evidence to support the claim that the proportion that correctly identifies the chip is significantly smaller than 50%.

7 0

4 years ago

To obtain the graph of y = (x - 8)2, shift the graph of y = x2 units.

zvonat [6]

Answer:

Right, 8

Step-by-step explanation:

Edge

8 0

4 years ago

Read 2 more answers

What is 14 divided by 6

Licemer1 [7]

$14:6=\frac{14}{6}=\frac{14:2}{6:2}=\frac{7}{3}=\frac{6+1}{3}=\frac{6}{3}+\frac{1}{3}=2\frac{1}{3}\\\\\frac{1}{3}=0.\overline3\ therefore\ 14:6=2.\overline3$