AB contains the points A(-3, 3) and B(1, 4). Z contains the points Y(-4, 7) and (-2, y). AB and Z are perpendicular. Find
the value of the y-coordinate of point Z.
A y=-1
B. y=1
C. y = 8
D. y = 15

answer: 193

explanation:

200-7 = 193

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;