Question 1: let the age be as described earlier such that x = 18, 19, 20, 21, 22, 25, 27, 30, 32. Standard deviation in years?

Answer is : 4.5Years

Question 2: find the means injection of Nurse three N_3 in

Nurse (N_1) | Nurse (N_2) | Nurse (N_3) | Nurse (N_4) | Nurse (N_5) |

25 | 41 | 27 | 32 | 43 |

66 | 35 | 31 | 15 | 05 |

30 | 38 | 30 | 20 | 21 |

34 | 26 | 32 | 28 | 16 |

Answer is: 30

Question 3: find the standared variation in X = 24,12,8,20,3,18,24,25,27,10,9,26,25,23,22,16,15,24,19,21.

Answer is: 6.87

Question 4: which of these two drugs is more effective?

Drugs 1 | Drugs 2 | |

means | 100 | 180 |

Standard deviation (s) | 50 | 70 |

Answer is: drugs 1

Question 5: the ages (x) of recipient of Nursing Scholarship as as follow x = 18, 19, 20, 21, 22, 25, 27, 30, 32. Find the means age?

Answer is: 24.2

Question 6. What is the standared deviation of the survibal times in X= 3,8,12,18,19,20,24,25,27?

Answer is: 7.4162

Question 7. The survival times (x) are as stated below X= 3,8,12,18,19,20,24,25,27?

Find the means survival times?

Answer is 18

Question 8: as we have in 8 and using the most numerical summary to draw on the administration of injections, determine which asignment is less than 24hrs

Nurse (N_1) | Nurse (N_2) | Nurse (N_3) | Nurse (N_4) | Nurse (N_5) |

25 | 41 | 27 | 32 | 43 |

66 | 35 | 31 | 15 | 05 |

30 | 38 | 30 | 20 | 21 |

34 | 26 | 32 | 28 | 16 |

Answer is: Nurse5

Question 9: using no 8, find which is more efficient between Nurse 2 and Nurse 3

Nurse (N_1) | Nurse (N_2) | Nurse (N_3) | Nurse (N_4) | Nurse (N_5) |

25 | 41 | 27 | 32 | 43 |

66 | 35 | 31 | 15 | 05 |

30 | 38 | 30 | 20 | 21 |

34 | 26 | 32 | 28 | 16 |

Answer is Nurse3

Question 10: consider this record of survival times (x). X = 24,12,8,20,3,18,24,25,27,10,9,26,25,23,22,16,15,24,19,21. Find the means survival rate?

Answer is: 18.55

## Be the first to comment