4z + 3 when z = 2 PLEASE HELP

the answer is 11

Step-by-step explanation:

4 times 2 is 8 plus 3= 11

So you are going to put it in like this

4(2) + 3

Now multiply 4 times 2 and you get

8 + 3

Now add 8 to 3 and you get

11

Hope this helps!

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;