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:
48-60= (-48)+60 is a possible answer.
this question can have multiple answers in multiple ways
Answer:
46
Step-by-step explanation:
all triangles add up to 180 degrees
add up the degrees that are given
83+51=134
SUBTRACT 134 from 180 which would be 46
add up all the degrees and they should add up to 180 to double check your work!
Answer:
B
Step-by-step explanation:
if there are 6 flowers in each vase and there are 2 vases that means there is 12 flowers. 12 divided by 3 =4