Question

Consider the following data:

x | −4 | −3 | −2 | −1 | 0 |
---|---|---|---|---|---|

P(X=x)P(X=x) | 0.3 | 0.1 | 0.1 | 0.2 | 0.3 |

Copy Data

**Step 2 of 5 :**

Find the variance. Round your answer to one decimal place.

Answer #1

Input Field | Input Field | |||

X | P(X = x) | X*P(X =x) | X*X*P(X =x) | |

-4 | 0.3 | -1.2 | 4.8 | |

-3 | 0.1 | -0.3 | 0.9 | |

-2 | 0.1 | -0.2 | 0.4 | |

-1 | 0.2 | -0.2 | 0.2 | |

0 | 0.3 | 0 | 0 | |

Total | -10 | 1 | -1.9 | 6.3 |

As sum of All probability is 1 so it is probability distribution |

Mean Of X = µ | = | Σ x * P(X=x) = | -1.9 | ||

Variance of X = σx^2 | = | Σ x*x * P(X=x) - µ^2 = | 6.3 - -1.9*-1.9 = | 2.69 | |

Standard deviation X = σx^2 | = | SQRT(Variance) = | 1.640121947 |

**Variance for give data is 2.69**

Consider the following data:
x
−7
−6
−5
−4
−3
P(X=x)
0.2
0.1
0.2
0.2
0.3
Copy Data
Step 1 of 5:
Find the expected value E(X). Round your answer to one decimal
place.
Step 2 of 5:
Find the variance. Round your answer to one decimal place.
Step 3 of 5:
Find the standard deviation. Round your answer to one decimal
place.
Step 4 of 5:
Find the value of P(X>−5). Round your answer to one decimal
place.
Step...

Consider the following data:
x
4
5
6
7
8
P(X=x)
0.3
0.2
0.1
0.1
0.3
Step 1 of 5 :
Find the expected value E(X). Round your answer to one decimal
place.
Step 2 of 5:
Find the variance. Round your answer to one decimal place.
Step 3 of 5:
Find the standard deviation. Round your answer to one decimal
place.
Step 4 of 5:
Find the value of P(X>4). Round your answer to one decimal
place.
Step 5...

Consider the following data:
x
2
3
4
5
6
P(X=x)
0.3
0.2
0.2
0.1
0.2
Step 1 of 5 : Find the expected value E(X). Round your answer to
one decimal place.

Consider the following data:
x 4 5 6 7 8
P(X=x) 0.1 0.2 0.2 0.3 0.2
Step 1 of 5: Find the expected value E(X). Round your answer to
one decimal place.
Step 2 of 5: Find the variance. Round your answer to one decimal
place.
Step 3 of 5: Find the standard deviation. Round your answer to
one decimal place.
Step 4 of 5: Find the value of P(X>4). Round your answer to
one decimal place.
Step 5 of...

Consider the following data:
x
3
4
5
6
7
P(X=x)P(X=x)
0.2
.1
.2
.2
0.3
Copy Data
Step 2 of 5:
Find the variance. Round your answer to one decimal place.
Step 3 of 5:
Find the standard deviation. Round your answer to one decimal
place.
Step 4 of 5:
Find the value of P(X>6)P(X>6). Round your answer to one
decimal place.
Step 5 of 5:
Find the value of P(X≤5)P(X≤5). Round your answer to one decimal
place.

Consider the following
data:
x
5
6
7
8
9
P(X=x)P(X=x)
0.30.3
0.1
0.1
0.3
0.2
Copy Data
Step 2 of 5 :
Find the variance.
Round your answer to one decimal place.

x
−5
−4
−3
−2
−1
P(X=x)
0.2
0.1
0.3
0.1
0.3
Step 3 of 5 :
Find the standard deviation. Round your answer to one decimal
place.
Step 4 of 5 :
Find the value of P(X> ?5). Round your answer to one decimal
place.
Step 5 of 5 :
Find the value of P(X> ?6). Round your answer to one decimal
place.

Consider the following data:
x
4
5
6
7
8
P(X=x)
0.2
0.2
0.1
0.2
0.3
Step 3 of 5 :
Find the standard deviation. Round your answer to one decimal
place.

Consider the following data:
x 1 2 3 4 5
P(X=x) 0.2 0.2 0.2 0.2 0.2
Step 2 of 5 : Find the variance. Round your answer to one
decimal place.

x 4 5 6 7 8 P(X=x) 0.3 0.2 0.2 0.1 0.2
Step 2 of 5 : Find the variance. Round your answer to one
decimal place. Answer

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