# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 244 - 248 of 253

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## Question 244

### Question

MCQ▾Cramer-Rao Inequality provides a Lower bond to the variance of an ________ estimator for a parameter.

### Choices

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

a. | Maximum Likelihood estimator | |

b. | Unbiased | |

c. | Consistent | |

d. | Sufficient |

## Question 245

### Question

MCQ▾A Statistical Hypothesis, which specifies the population completely, is known as

### Choices

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

a. | Null Hypothesis | |

b. | Composite Hypothesis | |

c. | Simple Hypothesis | |

d. | None of the above |

## Question 246

### Question

MCQ▾The confidence level is 95 % . This means

### Choices

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

a. | 95 % of the samples will contain the population mean and 5 % of the samples do not contain the population mean | |

b. | 95 % of the samples do not contain the population mean and 5 % of the samples will contain the population mean | |

c. | We are 100 % confident that the samples will contain the population mean | |

d. | None of the above |

## Question 247

### Question

MCQ▾In an Irreducible Markov chain:

### Choices

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

a. | You can move from one state to another only in 1 direction | |

b. | You can only move between 1 of two states | |

c. | There is at least one state when you can go with 0 probability. | |

d. | All the states can communicate with each other |

## Question 248

### Question

MCQ▾Which of the following is a property of a renewable process?

### Choices

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

a. | Inter arrival intervals are negative | |

b. | Inter arrival intervals are positive | |

c. | Inter arrival intervals may be identically distributed | |

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