(d) Compute the standard deviation of the random variable x.The standard deviation is activities.(Round to one decimal place as needed.)(e) What is the probability that a randomly selected student has a parent involved in three activities?The probability is(Type an integer or a decimal. Do not round.)(f) What is the probability that a randomly selected student has a parent involved in three or four activities?The nenhahili inWent OpinionPWPCMIOT C...!::átv st9KIn the following probability distribution, the random variable x represents the number of activities a parent of a 6th- to 8th-grade student is involved in. Complete parts (a) through (f) below.01+0.2320.286P(x)20.29730.06140.124C(a) Verify that this is a discrete probability distribution.This is a discrete probability distribution because the sum of the probabilities is and each probability is(b) Graph the discrete probability distribution Choose the correct graph bolow▼

Given that X 0 1 2 3 4 P(x) 0.232 0.286 0.297 0.061 0.124

P(x) 0.232 0.286 0.297 0.061 0.124 (a) Verify that this is a discrete probability distribution. This is a discrete probability distribution because the sum of the probabilities is (b) Graph the discrete probabilib distribution Choose the orrect graph I and each probability is

P(x) 0.232 0.286 0.297 0.061 0.124 (a) Verify that this is a discrete probability distribution. This is a discrete probability distribution because the sum of the probabilities is (b) Graph the discrete probabilib distribution Choose the orrect graph I and each probability is

Calculus For The Life Sciences

2nd Edition

ISBN:9780321964038

Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.

Chapter12: Probability

Section12.4: Discrete Random Variables; Applications To Decision Making

Problem 2E

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Question

(d) Compute the standard deviation of the random variable x.
The standard deviation is activities.
(Round to one decimal place as needed.)
(e) What is the probability that a randomly selected student has a parent involved in three activities?
The probability is
(Type an integer or a decimal. Do not round.)
(f) What is the probability that a randomly selected student has a parent involved in three or four activities?
The nenhahili in
W
ent Opinion
P
W
P
C
MIOT C...
!::
átv

st
9
K
In the following probability distribution, the random variable x represents the number of activities a parent of a 6th- to 8th-grade student is involved in. Complete parts (a) through (f) below.
0
1
+
0.232
0.286
P(x)
2
0.297
3
0.061
4
0.124
C
(a) Verify that this is a discrete probability distribution.
This is a discrete probability distribution because the sum of the probabilities is and each probability is
(b) Graph the discrete probability distribution Choose the correct graph bolow
▼

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