The graph of a quadratic function is shown. the general form of quadratic equations is y = ax + bx + c. what
do you know about the values of a, b and c just by looking at the graph?
o
a. a > 0, b = 0,c=-4
o
b. a < 0,b= 1, c = 4
o
o
c. a< 0,= 0,c = -4
d. a > 0, b = 4, c = -4

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;