Here ya go answer down below
Answer:
Yes, we reject the auto maker's claim.
Step-by-step explanation:
H0 : μ ≥ 20
H1 : μ < 20
Sample mean, xbar = 18 ;
Sample size, n = 36
Standard deviation, s = 5
At α = 0.01
The test statistic :
(xbar - μ) ÷ s /sqrt(n)
(18 - 20) ÷ 5/sqrt(36)
-2 /0.8333333
= - 2.4
Pvalue from test statistic : Pvalue = 0.00819
Pvalue < α
0.00819 < 0.01
Hence, we reject the Null
Answer:
C) (x-3)(x+3)
Note:
Just a tip there is an app called Desmos where you can put in equations like this and it will graph them for you.
Answer:
$520
Step-by-step explanation:
20%
=0.2
0.2*650
=130
650-130
=520
hey mate here is you answer..! ;)
Answer:
x = 3/2
Step-by-step explanation:
38x = 10x + 42
=>38x - 10x = 42
=>28x = 42
=>x = 3/2
