Answer:
The claim that he rate of inaccurate orders is equal to 10% is supported by statistical evidnece at 5% level
Step-by-step explanation:
Given that in a study of the accuracy of fast food drive-through orders, one restaurant had 34 orders that were not accurate among 371 orders observed.
Sample proportion 
(Two tailed test at 5% significance level)
p difference = 
Std error if H0 is true = 
Test statistic Z = p diff/std error
=0.539
p value = 0.5899
Since p > 0.05 accept null hypothesis
The claim that he rate of inaccurate orders is equal to 10% is supported by statistical evidnece at 5% level
Answer:
74%
Step-by-step explanation:
We have been given that the Average cost of a long distance call in the USA was 31 cents per minute in 1978 and 8 cents in 2008.
We will use percent decrease formula to solve our given problem.
Therefore, there is an approximate 74% decrease in cost per minute for the long distance call from 1978 to 2008.
Answer:
Step-by-step explanation:
a = adult cost
c = child cost
a = c + $3
200a + 100c =$2100
^ each # of tickets sold
200(c+3) + 100c =$2100
200c + 600 + 100 c = 2100 combine like terms
300c + 600 = 2100 need variable only on one side of equal sign so you subtract 600 from each side of the = sign
300c = 1500 now divide by 300 on both sides to isolate variable
c = $5
Answer:
Step-by-step explanation:
HELO
Hey there! :)
Answer:
56.7 kg.
Step-by-step explanation:
Use the density formula to solve for the mass:
D = m/V.
Rearrange in terms of mass, or 'm':
DV = m.
Solve for the volume:
0.06 × 0.9 × 1.5 = 0.081 m³.
Plug this into the equation along with the density:
700 × 0.081 = 56.7 kg.
