The second survey is more believable because there is randomness in the second rather than the first survey. Since the second company surveyed in all interest levels while the first company only surveyed their best customers. Random sampling like what the second company did helps produce representative samples by removing voluntary response bias and undercover age bias.
30(-2/5)²(5/8) = 30*(4/25)*(5/8) = 30*4/(5*8) = 3
The attached graph represents a histogram that has a range of 55
<h3>How to create the histogram?</h3>
The range is given as:
Range = 55
The range is calculated as:
Range = Maximum - Minimum
So, we have:
Maximum - Minimum = 55
Rewrite as:
Maximum = Minimum + 55
Let the minimum be 10.
So, we have:
Maximum = 10 + 55
Evaluate
Maximum = 65
The following dataset can be used to create the histogram
Score Frequency
10 2
15 5
45 3
65 1
This is so because it has a range of 55
See attachment for the histogram
Read more about histogram at:
brainly.com/question/14421716
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Answer:
the answer is 0,3
Step-by-step explanation: