# Probability-Probability Distributions [ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern)]: Questions 1 - 4 of 108

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## Question 1

### Question

MCQ▾Suppose that has the exponential distribution with rate parameter . Then which of the following statement is/are correct regarding it?

### Choices

Choice (4) | Response | |
---|---|---|

a. | has the geometric distributions on with success parameter . | |

b. | has the geometric distributions on with success parameter . | |

c. | Both a. and b. are correct | |

d. | Question does not provide sufficient data or is vague |

## Question 2

### Question

MCQ▾Which of the following statement is/are correct?

### Choices

Choice (4) | Response | |
---|---|---|

a. | Pascal distribution is a special case of negative binomial distribution on with parameter and , when k is a positive integer. | |

b. | Pascal distribution is a special case of Normal distribution with parameter , when | |

c. | The pdf of Pascal distribution is symmetric. | |

d. | All of the above |

## Question 3

### Question

MCQ▾If , then what will be the standard deviation of ?

### Choices

Choice (4) | Response | |
---|---|---|

a. | 59.8 | |

b. | 261.2 | |

c. | 161.4 | |

d. | 120.5 |

## Question 4

### Question

MCQ▾Which of the following is skewness of a standardized Bernoulli distributed random variable which takes the value 1 with success probability of and the value 0 with failure probability of ?

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. |