(01.04 MC)Simplify the following expression: (−1)(−7)(4)

12
28
−12
−28

The expression (-1)(-7)(4) simplifies to 28.

Step-by-step explanation:

Use PEMDAS and go from left to right.

Multiplication is the sole step applied here, so go from left to right.

-1 * -7 * 4

Two negatives make a positive.

7 * 4

Multiply 7 by 4 normally.

28 is the final answer.

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;