Can someone help me? I don’t understand.

4.75

Step-by-step explanation:

ABC is a 30-60-90 triangle. AB is the short leg that we are looking for. AC is the longer leg and it is 9.5. The short leg is half the length of the long leg, so AB = 4.75

4.75

Step-by-step explanation:

ABC is a 30-60-90 triangle. AB is the short part that we are looking for. AC is a longer part and it is 9.5. The short part is half the length of the long leg, so AB = 4.75

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;