Answer:
$ 200.205
Step-by-step explanation:
For the first 10 1/2 hours, she earns $9.50 × 10 1/2 = $99.75
To get the no of hours she worked after that: 20 1/4 - 10 1/2 = 9 3/4 hrs
In 9 3/4 hrs, she earns $10.30 × 9 3/4 = $ 100.425
Total amount of money earned = $99.75 + $ 100.425 = $ 200.205
Answer:
Step-by-step explanation:
Answer: B. 46 + w = 231
Explanation: There needs to be 231 eggs used so the equations total has to be 231. Then there's a portion that is white, w, and the 46 brown eggs. Meaning that 46 + w = 231
Answer: lower bound = 0.7404; upper bound = 0.8596
Step-by-step explanation:
The proportion p for this population:
p = ![\frac{240}{300}](https://tex.z-dn.net/?f=%5Cfrac%7B240%7D%7B300%7D)
p = 0.8
Confidence interval for proportion is calculated as:
p ± z-score.![\sqrt{\frac{p(1-p)}{n} }](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7Bp%281-p%29%7D%7Bn%7D%20%7D)
Z-score for a 99% confidence interval is: z = 2.58
Calculating:
0.8 ± 2.58.![\sqrt{\frac{0.8(0.2)}{300} }](https://tex.z-dn.net/?f=%5Csqrt%7B%5Cfrac%7B0.8%280.2%29%7D%7B300%7D%20%7D)
0.8 ± 2.58.![\sqrt{0.00053}](https://tex.z-dn.net/?f=%5Csqrt%7B0.00053%7D)
0.8 ± 2.58(0.0231)
0.8 ± 0.0596
This means that the lower limit of this interval is 0.7404 and upper bound is 0.8596
Answer:
-4.2
Step-by-step explanation: