What is the ratio of salty snacks to sweet snacks in the vending machine

Not sure about this, help me

Klio2033 [76]

Step-by-step explanation:

wnich grade you are in

please answer fast

6 0

3 years ago

Compute a 99% confidence interval for the mean weight of toxic substance per gram of mold culture. State the assumption you make

kow [346]

Complete Question

The complete question is shown on the first uploaded image

Answer:

The 99% confidence interval is $2.4309 < \mu < 4.9328$

Step-by-step explanation:

From the question we are told that

The data is 3, 2,5, 3, 2, 6, 5,4.5, 3, 3, and 4

The sample size is n = 11

Generally the sample mean is mathematically represented as

$\= x = \frac{\sum x_i}{n}$

=> $\= x = \frac{3+ 2+5+ \cdots +4 }{11}$

=> $\= x = 3.6818$

Generally the sample standard deviation is mathematically represented as

$\sigma = \sqrt{\frac{\sum [ x_i - \= x ] }{n} }$

=> $\sigma = \sqrt{\frac{[ 3 - 3.6818 ]^2 +[ 2 - 3.6818 ]^2 + \cdots + [ 4 - 3.6818 ]^2 }{11} }$

=> $\sigma = 1.3091$

Given that the confidence interval is 99% then the level of significance is mathematically represented as

$\alpha= (100 - 99) \%$

=> $\alpha= 0.01$

Given that the sample size is small we will making use of t distribution table

Generally from the t distribution table the critical value of at a degree of freedom of is

$t_{\frac{\alpha }{2} , 10 } =3.16927267$

Generally the margin of error is mathematically represented as

$E = 3.16927267 * \frac{1.3091 }{\sqrt{11} }$

$E = 1.251$

Generally 99% confidence interval is mathematically represented as

$3.6818 -1.251 < p < 3.6818 + 1.251$

=> $2.4309 < \mu < 4.9328$

8 0

3 years ago

A color called "passion purple" is made by mixing 5oz of red paint with 9 oz of blue paint. What percent of passion purple is bl

andrezito [222]

The answer to this is 64%.

7 0

4 years ago

How many different triangles can you make if you are given the measurements for two angles and the length of a shared side?

Ainat [17]

Answer:

1

Step-by-step explanation:

5 0

3 years ago

Ln 2 - ln (3x + 2) =1

Westkost [7]

When you add 2 logs together, you get the log of the product.
When you subtract 2 logs, you get the log of the quotient.

Like this:

Ln(2) - Ln(3x+2) is the Ln(2/3x+2) .

So now you have Ln(2/3x+2) = 1

Raise 'e' to the power of
each side of the equation: (2/3x+2) = e¹

Multiply each side by (3x+2): 2 = (e) (3x+2)

Divide each side by 'e': 2/e = 3x + 2

Subtract 2 from each side: (2/e) - 2 = 3x

Divide each side by 3: x = [ (2/e) - 2 ] / 3

= approx. -0.421... (rounded)

I checked this by writing it into the original equation in place of 'x'.
That took my about 5 tries, but it finally checked OK.

Please. DON't use my answer unless you understand
where it came from.

7 0

3 years ago