Find the sum.
8 + -1 + -5

A. 2
B. 14
C. -2
D. 16

The answer is A. 2

a

Step-by-step explanation:

-1 0 1 2 3 4 5 6 7 8 9

1. 2. 3. 4 5 6 7 8 therefore its 7

-5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9

1. 2. 3. 4. 5 6 7 so the answer is a 2

Awseres A.2 this is bc 8+-1 is fancy for 8-1=7and 7-5=2

Step-by-step explanation:

the answer will be

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;