Figures x and y above show how eight identical triangular pieces of cardboard were used to form a square and a rectangle, respectively. what is the ratio of the perimeter of x to the perimeter of y? (a) 2: 3(b) 2√: 22: 2(c) 22√: 322: 3(d) 1: 1(e) 2√: 1

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;