The graph below shows journey of Kevin and Ephantus, Kevin travelled from tow Mo O while Ephantus travelled from Q 10 M.
Q 350:
300
KEVIN
EPHANTUS
250
200)
DISTANCE IN KM
150)
100)
50
M
10am
11am
9am
1pm
12pm
bam
7am
Bam
TIME
How many kilometres does the car travel in 40 minutes?
A 150 km
B. 100 km
C. 200 km
D. 250 km

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;