Answer:
a) Robert, Juan, linda
b) Joel
c) Susan, Jan
d) 165.4
173.4
134.5
156
147.3
170.2
Step-by-step explanation:
The standardized normal distribution N (0,1) that expresion stands for normal distribution with mean 0 and standard deviation 1, therefore all positive values are above 0 and all negativa values are below 0
The sample n is 6 then we should use t-student distribution, we calculate t statistic as follow
t = (x-μ)/εε where standard error is εε = σ/√6 εε = 9.795 since σ =24
Robert
0.96 * 9.795 = x - 156 ⇒ x = 165.4
1.78 * 9.795 = x - 156 x = 173.4
-2.2 * 9.795 = x - 156 x = 134.5
0 * 9.795 = x- 156 x= 156
-0.89* 9.795 = x -156 x = 147.3
1.45 * 0.9795 = x -156 x = 170.2
To express a number as a percentage, you need to write it as a ratio with denominator 100.
We know that ratios have different forms they can be written into, for example, all the following are equivalent:
So, since 43 students out of 860 are sick, the ratio of sick students is
and we want to express this as a ratio with denominator 100, so we have
So, if we solve for x, we have
So, 5% of students is sick.
(3, - 2)
given y = - 2, then
- 2x + 4 = - 2 ( solve for x )
subtract 4 from both sides
- 2x = - 6 ( divide both sides by - 2 )
x = 
= 3
*Hint: You must combine like terms and solve.
3c - 7d - 2c + 5d - c + 8d + 4c - 6d
7c - 3c + 13d - 13d
4c
Answer: I think its $176.40
Step-by-step explanation:
The area would be 21
Feet would be = 50.4 (21 x 2.4)
Then it would cost $176.40 (50.4 x $3.50)
I might be wrong, I'm not entirely sure.
