umber 6,7,9
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
![6. Use the frequency distribution to construct a probability distribution. Construct a
histogram, find the mean, variance and standard deviation.
The number of defects per batch of DVD's inspected:
Defects
1
4
Batches
105
98
115
64
13
8.
7. Using the probability distribution created in question 6, what is the probability that
there were at most 2 defects in a batch?
8. A surgical technique is performed on seven patients. You are told there is a 60%
chance of success. Find the probability that the surgery is successful for (a) exactly five
patients, (b) at least five patients, and (c) at most two patients.
9. Thirty-one percent of vacationers say the primary purpose of their vacation is outdoor
recreation. You randomly select 10 vacationers and ask each to name the primary
purpose of his or her vacation. Find the probability that the numbers who say outdoor
recreation is the primary purpose
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Q +
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![](/static/compass_v2/shared-icons/check-mark.png)
Provided data is:
The number of defects per batch of DVD’s inspected as:
Defects |
0 |
1 |
2 |
3 |
4 |
5 |
Batches |
105 |
98 |
115 |
64 |
13 |
8 |
Histogram of the data can be constructed using excel function as follows:
- Enter data into excel.
- Select data > Insert> All charts> Column charts. Click OK.
- Obtained output is:
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