Given that the mean is $9.5 and the standard deviation is $1.30, the standard error will be given by:
σ/√n
where
σ-standard deviation
n=sample size
thus, we shal have:
1.30/√20
=0.2906
Next we find the margin error
0.2906*2=0.581
thus the confidence interval will be:
(9.5+0.581, 9.5-0.581)
=(10.081,8.919)
Answer:
The line has a slope of zero which means the line is a horizontal line.
Step-by-step explanation:
Given that:
The two points are (-3,2) and (4,2)
Slope of a line is given by the formula,

Here,

Putting these values in formula;

Hence,
The line has a slope of zero which means the line is a horizontal line.
Answer:

Step-by-step explanation:
Given



Required
Determine the change received
First, we need to calculate the total amount spent


This implies that Natalie pays a total of $41.18
Next, we calculate the change as thus:



<em>Hence, the change is $8.82</em>
How do I solve n x 43.50 = 435
To solve this given expression, there various ways. We can utilize simply
by recognizing this as an algebraic equation.
The values then become
1. 43. 50 x n = 435
2. 43.50n = 435
3. N = 435 / 43.50
4. N = 10
Thus, n is 10.