Can someone help me solve this?

p + q = (-2) (1)

p - q = 8 (2)

on simplifying both equati

8 + q = (-2)-q

q + q = (-2) -8

2q = (-10)

q = (-10)/2

q = (-5)

putting the value of q = (-5) in the equation

p + (-5) = (-2)

p = (-2)+5

p = 3

hence, p = 3 , q = (-5)

could you reply to this with the question so i can ?

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;