# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 229 - 234 of 253

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## Question 229

### Question

MCQ▾As the sample size increases the length of the confidence interval …

### Choices

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

a. | Decreases | |

b. | Cannot be determined with the given information | |

c. | It will stay the same | |

d. | Increases |

## Question 230

### Question

MCQ▾Formula for obtaining 95 % confidence limits for the mean μ of a Normal population with mean μ and standard deviation σ are

### Choices

Choice (4) | Response | |
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a. | ||

b. | ||

c. | ||

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

## Question 231

### Question

MCQ▾The method of least square estimation is mostly used in estimating the parameters of ________ function

### Choices

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

a. | Discrete | |

b. | Linear | |

c. | Continuous | |

d. | All of the above |

## Question 232

### Question

MCQ▾It is given that sample size n = 10, sample Mean and Standard Deviation = 11.1. Then 95 % Confidence Interval for the population is

### Choices

Choice (4) | Response | |
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a. | ||

b. | ||

c. | ||

d. |

## Question 233

### Question

MCQ▾What is the 95 % Confidence Interval if n = 100, sample mean and population standard deviation

### Choices

Choice (4) | Response | |
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a. | ||

b. | ||

c. | ||

d. | All of the above |

## Question 234

### Question

MCQ▾A Electric company wants to estimate the amount of electric bills of the past month. He takes a random sample of 18 households and obtains the following amounts, (in ₹) for their past month electric bill. It is given that

1608 | 1875 | 1264 |

1794 | 1478 | 1999 |

1828 | 2206 | 1798 |

1794 | 1738 | 1740 |

1598 | 1486 | 1830 |

1568 | 1941 | 1516 |

The 95 % confidence interval of the mean electric bill will be

### Choices

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

a. | ||

b. | ||

c. | ||

d. |