Answer:
The answer is she sold 20 labradorite crytals and 3 galena crystals.
Step-by-step explanation:
First you times 20 x 20 and get 400 and then times 13 x 3 and get 39 and 400 plus 39 equals $439.
The answer is 1 3/5.
Hope this helps!
Have a NICE DAY!
Answer:
316.0
Step-by-step explanation:
In the US, the given number is in standard form.
__
In the UK, "standard form" is what we refer to as "scientific notation" in the US. The number in standard form there is ...
3.160×10²
Given:
n = 150, sample size
Denote the sample proportion by q (normally written as
![\hat{p}](https://tex.z-dn.net/?f=%5Chat%7Bp%7D)
).
That is,
q = 60/150 = 0.4, sample proportion.
At the 96% confidence level, the z* multiplier is about 2.082, and the confidence interval for the population proportion is
![q \pm z^{*}[ \frac{q(1-q)}{ \sqrt{n} } ]](https://tex.z-dn.net/?f=q%20%5Cpm%20z%5E%7B%2A%7D%5B%20%5Cfrac%7Bq%281-q%29%7D%7B%20%5Csqrt%7Bn%7D%20%7D%20%5D)
That is,
0.4 +/- 2.082* √[(0.4*0.6)/150]
= 0.4 +/- 0.0833
= (0.3167, 0.4833)
= (31.7%, 48.3%)
Answer: The 96% confidence interval is about (32% to 48%)