# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 118 - 122 of 253

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## Question number: 118

» Statistical Inference and Hypothesis Testing » Factorization Theorem

### Question

is sufficient for if and only if the joint density function , of the sample values can be expressed in the form

where depends on and only through the value of and is independent of . This Theorem is known as

### Choices

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

a. | Factorization Theorem | |

b. | Blackwell Theorem | |

c. | Rao-Blackwell Theorem | |

d. | Cramer-Rao Theorem |

## Question number: 119

» Statistical Inference and Hypothesis Testing » Characteristics of Good Estimator

### Question

Efficiency of sample mean as compared to median as an estimate of the mean of a normal population is

### Choices

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

a. | 22 percent | |

b. | 64 percent | |

c. | 360 percent | |

d. | 157 percent |

## Question number: 120

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

### Question

Formula for obtaining 99 % confidence limits for the mean μ of a Normal population with mean μ and standard deviation σ are

### Choices

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

a. |
| |

b. |
| |

c. |
| |

d. | All a. , b. and c. are correct |

## Question number: 121

» Statistical Inference and Hypothesis Testing » Simple and Composite Hypotheses

### Question

### Is the Following Statement True or False?

The null hypothesis is generally assumed to be ________ until evidence indicates otherwise.

## Question number: 122

» Statistical Inference and Hypothesis Testing » Confidence Interval Estimation

### Question

Suppose The confidence interval is given by the relation . Then is called as the

### Choices

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

a. | Correlation Coefficient | |

b. | Confidence coefficient | |

c. | Confidence interval | |

d. | None of the above |