Using the z-distribution, a sample of 609 nickels has to be weighed.
<h3>What is a z-distribution confidence interval?</h3>
The confidence interval is:
The margin of error is:
In which:
- is the sample mean.
- is the standard deviation for the population.
For this problem, the parameters are:
We solve for n to find the sample size, then:
n = 608.9
Rounding up, a sample of 609 nickels has to be weighed.
More can be learned about the z-distribution at brainly.com/question/25890103
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Answer: 3,4,5,6,52,72,86,105
Step-by-step explanation: when solving the range you find the difference between the highest and lowest values in the set. To find the range, first order the data from least to greatest. Then subtract the smallest value from the largest value in the set.
Answer:
12
Step-by-step explanation:
Let's first add the whole numbers:
2 + 4 = 6
The LCD of 1/2 and 2/3 is 3/6 and 4/6 . . .
3 + 4 = 7
(The denominators are equal in both fractions so they will remain the same)
= 7/6
Simplifying 7/6 . . .
7/6 = 1 1/6
6 + 1 = 7
7 + 1/6 = 7 1/6
<h3>7 1/6 ← answer</h3><h3 />
<u>Your final answer is 7 1/6.</u>
I hope this helps! :)
The ratio of sue's earnings to bob's is 2:1
2+1=3
24÷3=8
8×2=$16
so sue earned $16 and Bob earned $8