Answer:
The claim is not true
Step-by-step explanation:
We are given that A local retailer claims that the mean waiting time is less than 8 minutes.
A random sample of 20 waiting times has a mean of 6.3 minutes with a standard deviation of 2.1 minutes.
s = 2.1
n = 20
Since n <30 and population standard deviation is unknown
So,we will use t test
So,
t=-3.62
α = 0.01
Degree of freedom = df=n-1=20-1=19
t calculated < t critical
So, we failed to reject null hypothesis
Hence the claim is not true
Answer:
Small flags = 108
large flags= 47
Step-by-step explanation:
Step one:
given
let the number of small lag be x
and big flags be y
so
3.5x+6.5y= 683.5----------1
x+y=155------------------------2
Step two:
from eqn 2 x= 155-y
put x= 155-y in eqn 1
3.5(155-y)+6.5y= 683.5
542.5-3.5y+6.5y=683.5
collect like terms
3y=141
divide by 3
y= 141/3
y=47
Step three:
put y= 47 in eqn 2
x+47=155
x= 155-47
x=108
Answer:
answers are A and C
Step-by-step explanation:
they both will equal 49w
Please Brainliest will be much appreciated
Answer:
less than because levi is one of the most skilled
