Which expression can be used to determine the length of segment zy?

Option 2:  

Step-by-step explanation:

We can see that XYZ is forming right angled triangle in the given figure

where XY is Perpendicular.

XZ is Base.

YZ is Hypotenuse .

Length of XY is 3 units (refer figure)

Length of XZ is 8 units (refer figure)

Now to calculate length of ZY we will use Pythagoras theorem i.e.

By applying this theorem :

⇒

Thus Option 2 is the correct expression to determine length of ZY i.e.

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;

1.30

step-by-step explanation: