Abear biologist is planning a survey of female kodiak grizzly bears to estimate the percent that are pregnant. examining a bear for pregnancy is risky business (duh) and the researcher doesn't want to survey too many or too few bears (just right). how many bears must be surveyed to be 99% confident that the measured pregnancy rate (proportion pregnant) is within no more than 5 percentage points of the true value? based on an initial survey of 16 bears she expects a pregnancy rate of 32%.

 Hence the value of n should be 580.

Step-by-step explanation:

Consider the provided information.

It is given that e = 0.05

p = 32% = 0.32

The confidence interval is 99%

for 99% CI critical Z = 2.580

We can calculate the sample size  by using the formula.

Substitute the respective values

Hence the value of n should be 580.

2 and 1.

step-by-step explanation:

plug in each answer. 0 doesn't work, 1 does. so does 2. 4 doesn't:

0 = 1 is not true.

2 = 2 is true.

4 = 4 is true.

8 = 16 is not true.

hope this !

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.