Which ratio is equal to 3:5?
A.
12:25
B.
12:20
cal
15:20
OD.
12:15

B

Step-by-step explanation: If you multipley both 3 and 5 by the same number 4 you get the ratio 12:20

12:20

Step-by-step explanation:

3:5

12:20

there will be 35 boys in each team. : )

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;