Answer:
8 and 9
Step-by-step explanation:
Total punch produced = 76 ounces
If 9 people took it.
Each would have = 76÷ 9
= 8 4/9 or 8.444
Which is between 8 and 9 as a whole number
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The standard deviation is 1.98. Option A is correct.
The standard deviation formula is given as
where:
- SS is the sum of squares = 200
- n is the sample size = 51
Substitute the given parameters into the formula to have:
Hence the standard deviation is 1.98
Learn more on standard deviation here: brainly.com/question/12402189
The distributed property is one of the most frequently used properties in math. In general, this term refers to the distribution property of multiplication. The distributive property lets you multiply a sum by multiplying each addend separately and then add the products.
Constant is something continuously occurring over a period of time.
Coefficient is a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
Term is either a single number or variable, or numbers and variable multiplied together. Terms are separated by + or - signs.
Identity Property of Municipality states that any time you multiply a number by 1, the results, or product, is that original number.
Identity Property if Addition is always zero.
Like terms are terms whose variables are the same. In other words, terms that are "like"
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Answer:
Step-by-step explanation:
Given that each of 165 newly manufactured items is examined and the number of scratches per item is recorded (the items are supposed to be free of scratches), yielding the following data
x freq x*f x^2*f
0 25 0 0
1 34 34 34
2 37 74 148
3 29 87 261
4 19 76 304
5 8 40 200
6 8 48 288
7 5 35 245
165 394 1480
Mean 2.387878788 8.96969697
Variance 3.267731864
We get E(x) = 2.388 and hence unbiased estimator of mu is 2.388
b) Variance = 3.268
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