Answer:
P(X is greater than 30) = 0.06
Step-by-step explanation:
Given that:
Sample proportion (p) = 0.5
Sample size = 30
The Binomial can be approximated to normal with:
To find:
P(X> 30)
So far we are approximating a discrete Binomial distribution using the continuous normal distribution. 30 lies between 29.5 and 30.5
Normal distribution:
x = 30.5, 
= 25, 
= 3.536
Using the z test statistics;
z = 1.555
The p-value for P(X>30) = P(Z > 1.555)
The p-value for P(X>30) = 1 - P (Z< 1.555)
From the z tables;
P(X> 30) = 1 - 0.9400
Thus;
P(X is greater than 30) = 0.06
Answer:
Step-by-step explanation:
Weren't there more instructions? Please, share everything about each problem you post here.
Use the compound amount formula: A = P(1 + r/n)^(nt).
Here we have
A = $1500(1 + 0.023/2)^(2t), where t is the number of years.
<h3>−2x + 14 = 12</h3>
<em>Subtract</em><em> 14 </em><em>from both sides.</em>
<h3>−2x = 12 − 14</h3>
<em>Subtract </em><em>14</em><em> from </em><em>12 </em><em>to get </em><em>−2.</em>
<h3>−2x = −2</h3>
<em>Divide both sides by</em><em> −2.</em>
<h3>x= -2/-2</h3>
<em>Divide </em><em>−2</em><em> by </em><em>−2</em><em> to get 1.</em>
<h3>x = 1</h3>
<h2>Skandar</h2>
