Answer: 21
Step-by-step explanation: 84/4 = 21
Answer:
(
−
∞
,
∞
)
Step-by-step explanation:
Answer:
Step-by-step explanation:
Complete Question:
Chapter 6, Section 1-D, Exercise 009 Is a Normal Distribution Appropriate? In each case below, is the sample size large enough so that the sample proportions follow a normal distribution?
a) n=600 p=0.2
b) n=20, p=0.4
if np=10 and npq=10 then the data follows normal distribution
a) np= 120,
q= 1-0.2= 0.8
npq= 600 ×0.2×0.4 = 48
Normal distribution is appropriate and sample size is large enough
b) np= 8
q= 1-0.4= 0.6
npq= 20 × 0.4×0.6= 4.8
sample size is not large enough so normal distribution is not appropriate.
Answer:
A) Negative Correlation. B) C. C) B
Step-by-step explanation:
<h2>A:</h2>
As the line of best fit is travelling downwards, it is a negative correlation, if the line of best fit is travelling upwards, it is a positive correlation, if the points on the graph are all over the place, there is no correlation.
<h2>B:</h2>
As there are only three types of correlation, the strongest is always the positive.
<h2>C:</h2>
The answer is B because there is no correlation and that means that there shouldn't be a line of best fit.
Answer:
10
Step-by-step explanation:
let the number be n then half the number is 
n , so
n + 69 = 74 ( subtract 69 from both sides )
n = 5 ( multiply both sides by 2 to clear the fraction )
n = 10
Thus the number is 10
