LLLIIINNNKKK Which expression represents "3 times the sum 7 & m??? A. 3x7+m

B. 3xm+7

C. (3xm)+7

D. 3x(7+m)

Its D

Step-by-step explanation:

The brackets show tht 3 is multiplied with 7 AND M.

Stranger things fan huh?

Same here ;)

Its D

Step-by-step explanation:

The brackets show tht 3 is multiplied with 7 and M.

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;

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