Typically seven out of every 100 babies bom in the River Creek hospital have a birth defect, most of
1 answer:
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Answer:
Standard Deviation = 3.22
Variance = 10.36
Step-by-step explanation:
x P(x) x × P(x) x² x² × P(x)
19 0.20 3.8 361 72.2
10 0.20 2 100 20
11 0.30 3.3 121 36.3
12 0.20 2.4 144 28.8
13 0.10 1.3 169 16.9
____________________________________________
12.8 174.2 => Total
<em><u>Mean Formula</u></em>
<em><u>Variance Formula</u></em>
<em><u>Standard Deviation Formula</u></em>
We have that
<span>A (0, 2) B (4, 6) C (10, 12) D (18, 20)
</span>
using a graph tool
see the attached figure
the answer is
C) line
<span>A (0, 2) B (4, 6) C (10, 12) D (18, 20)
</span>
using a graph tool
see the attached figure
the answer is
C) line
Answer:
The 95% confidence interval is
A 95% level of confidence mean that there is 95% chance that the true population mean will be in this interval
Step-by-step explanation:
From the question we are told that
The sample size is
The mean is
The standard deviation is
Given that the confidence level is 95% then the level of significance is mathematically represented as
=>
=>
Next we obtain the critical value of from the normal distribution table , the value is
Generally the margin of error is mathematically represented as
substituting values
The 95% level of confidence interval is mathematically represented as
substituting values
The 95% level of confidence mean that there is 95% chance that the true population mean will be in this interval