X - the number

$x^2=4x+12 \\
x^2-4x-12=0 \\
x^2-6x+2x-12=0 \\
x(x-6)+2(x-6)=0 \\
(x+2)(x-6)=0 \\
x+2=0 \ \lor \ x-6=0 \\
x=-2 \ \lor \ x=6$

The number is negative, so x=-2.

The number is -2.

3 0

4 years ago

You are testing the claim that the proportion of men who own cats is significantly different than the proportion of women who ow

Nadya [2.5K]

Answer:

Test statistic =1.30

Step-by-step explanation:

Given that you are testing the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats.

Men Women Difference

Sample size n 60 120

Proportion p_1, p_2 0.45 0.35 0.10

60 120 180

0.45 0.35 0.383333333

27 42 69

p = 0.3833

Std error for proportion difference = $\bar p (1-\bar p)(\frac{1}{n_1}+\frac{1}{n_2})\\=0.3833(0.6167)(\frac{1}{60}+\frac{1}{120})\\=0.0769$

Test statistic = $\frac{p_1-p_2}{\bar p (1-\bar p)(\frac{1}{n_1}+\frac{1}{n_2}) }$

= $1.3008$

=1.30

4 0

3 years ago

Select the answer that shows the correct use of numbers.

Arte-miy333 [17]

Answer:

The answer is C

5 0

3 years ago