# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 181 - 186 of 253

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## Question 181

### Question

MCQ▾A survey of 200 factory workers provides a sample mean of 7.10 hours worked. What is the 95 % confidence interval based on this sample. Calculated standard deviation is 5 hours.

### Choices

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

b. | ||

c. | ||

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

## Question 182

### Question

MCQ▾The 99 % confidence interval for of the normal population is given by

### Choices

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

b. | ||

c. | ||

d. |

## Question 183

### Question

MCQ▾It is given that n = 1029, and . Then the 90 % Confidence Interval for the population mean is given by

### Choices

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

b. | ||

c. | ||

d. |

## Question 184

### Question

MCQ▾Suppose we take a random sample from some population and obtain a 96 % confidence interval for the population mean, , then which quantity is guaranteed to be in the interval?

### Choices

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

a. | μ | |

b. | s | |

c. | ||

d. | μ & s |

## Question 185

### Question

MCQ▾A Minimum Variance Unbiased Estimator is said to be unique if for any other estimator ,

### Choices

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

a. | ||

b. | ||

c. | Neither (i) nor (ii) | |

d. | All of the above |

## Question 186

### Question

MCQ▾Given the probability statement that

Which of the following statement is correct in respect of given probability statement?

### Choices

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

a. | The confidence interval is 11.32 | |

b. | 4.35 and 15.67 are 90 percent confidence limits | |

c. | Probability that lies in the interval 4.35 and 15.67 is 0.90 | |

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