Find cos(B) A.) 7/3 B.) 3/7 C.) 3/58 D.) 7/58

stat: sample of 780 adults in the U.S.A., it was found that 80 of those had a pinworm infestation. You want to find the 99% conf

Anettt [7]

Answer: 554

Step-by-step explanation:

If prior population proportion is known, then the formula to find the sample size is given by :-

$n=p(1-p)(\dfrac{z_{\alpha/2}}{E})^2$

As per given description, we have

p= 0.1

E=0.025

Critical z-value for 95% confidence : $z_{\alpha/2}=1.96$

Then,

$n=0.1(1-0.1)(\dfrac{1.96}{0.025})^2=553.1904\approx554$

Hence, the minimum sample size required = 554.

7 0

3 years ago

(c) Find (dy)/(dx) given y = ((1 + 2x)/(1 + x)) ^ 2

hichkok12 [17]

Delete this answer please.

6 0

2 years ago

Find the measure of angle x in the figure below: A triangle is shown. At the top vertex of the triangle is a horizontal line ali

tester [92]

Y = 180 - 52 - 59 = 69 degrees . . . . . . . . (angles on a straight line are supplementary, i.e. add up to 180 degrees)

x = 180 - 69 - 63 = 48 degrees . . . . . . . . (sum of interior angles of a triangle is 180 degrees)

Therefore, m/_x = 48 degrees.

4 0

3 years ago

Read 2 more answers

Im really bad with graphs, pls help

Gnoma [55]

Answer:

B

Step-by-step explanation:

8 0

2 years ago

A. 3s<br> B. s^2<br> C. s + 1<br> D. 2s + 1

Anna11 [10]