For number 1 we need Pr(X > x) = 0.02
<span>which is pr(X<x) = 0.98 </span>
<span>We will determine z such that pr(Z<z) = 0.98 </span>
<span>and in place of the table, I will use Microsoft Excel </span>
<span>=norminv(0.98,0,1) </span>
<span>which gives the number z satisfying Pr(Z<z) = 0.98 </span>
<span>Result is 2.053748176 </span>
<span>so </span>
<span>x - 100 </span>
<span>▬▬▬..=...2.053748176 </span>
<span>15 </span>
<span>so </span>
<span>x = 2.053748176(15) + 100 = 130.8 </span>
Answer:
80% :)
Step-by-step explanation:
If 20 = 100% (so here we use 20 as the total coz its ALL)
16 = ? (cross-multiply)
16 * 100 = 1600
1600/20 = 80%
so you were right, unless the question was asking how many times he missed or smthing. but your answer is okay
Answer:
x(2x+3)
Step-by-step explanation: