What is the simplified value of the expression below? 12.4 x (negative 6.3)

Answers are below this
–78.12
–1.97
1.97
78.12

i dony know

step-by-step explanation:

1. 34

2. 268

3. x=14.4

step-by-step explanation:

there is no question content here, but you for the free points! : d

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;