\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Courses
About
Login
Register
C
(
)
⌫
π
e
7
8
9
\(\div\)
\(\sqrt{\,}\)
\(a^{b}\)
4
5
6
\(\times\)
\(\frac{a}{b}\)
ln
1
2
3
-
cos
cos⁻¹
0
.
=
+
sin
sin⁻¹
←
→
!
tan
tan⁻¹
A student sends party invitations to 4 friends via text message, and each friend has a 70\(\pourcent\) chance of accepting, independently of the others. The random variable \(X\) represents the number of friends who accept. Find the probability that all 4 friends accept (round to three decimal places).
\(P(\text{"only successes"}) \approx\)
7
8
9
+
4
5
6
-
1
2
3
*
C
0
.
÷
Exit