Home
Class 12
MATHS
The mean weight of 9 items is 15 . If on...

The mean weight of 9 items is 15 . If one more item is added to the series, the mean becomes 16 . The value of `10^( th) ` item is

Text Solution

Verified by Experts

The correct Answer is:
25
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    CENGAGE|Exercise Comprehension|2 Videos
  • PROBABILITY I

    CENGAGE|Exercise JEE Advanced Previous Year|7 Videos

Similar Questions

Explore conceptually related problems

The A.M of 9 terms is 15. If one more term is added to this series , then the A.M becomes 16. .The value of the added term is

There are four unknown numbers. The mean of the first two numbers is 4 and the mean of the first three is 9. The mean of all four number is 15, if one of the four number is 2 find the other numbers.

Median of a data , arranged in ascending order 7,10,15,x,y,27,30 is 17 and when one more observation 5 is added to the data, the median has become 18 . Find x and y.

Mean of 100 items is 48 and their standard deviation is 10 . Find the sum of all the itmes and the sum of the squares of all items.

The mean and standard deviation of 20 items are found to be 10 and 2 respectively. At the time of checking it was found that an item 12 was wrongly entered as 8 . Calcualte the correct mean and standard deviation.

A businessman bought some items for Rs. 600. Keeping 10 items for himself he sold the remaining items at a profit of Rs. 5 per item. From the amount received in this deal he could buy 15 more items. Find the original price of each item.

A box contains 6 nails and 10 nuts. Half of the nails and half of the nuts are rusted. If one item is chosen at random, then find the probability that it is rusted or is a nail.

The mean of the data set comprising of 16 observations is 16. If one of the observation valued 16 is deleted and three new observations valued 3, 4 and 5 are added to the data, then the mean of the resultant data, is : (1) 16.8 (2) 16.0 (3) 15.8 (4) 14.0

CENGAGE-PROBABILITY AND STATISTICS-Question Bank
  1. A 2 xx 2 matrix is formed with entries from the set 0,1. The probebili...

    Text Solution

    |

  2. Two boys A and B find the jumble of n ropes lying on the floor. Each t...

    Text Solution

    |

  3. On a normal standard dic one of the 21 dots from any one of the six fa...

    Text Solution

    |

  4. Miss C has either Tea or Coffee at moming break. If she has tea one mo...

    Text Solution

    |

  5. A bowl hes 6 red marbles and 3 green marbles. The probebility that a b...

    Text Solution

    |

  6. Lot A consists of 3 G and 2 D articles. Lot B consists of 4 G and 1 D ...

    Text Solution

    |

  7. Let A and B are cvents of an experiment of P(A)=1/4, P(A uu B)=1/2 the...

    Text Solution

    |

  8. The probability that a positive two digit number selected at random ha...

    Text Solution

    |

  9. If the papers of 4 students randomly đistributed for checking among 7 ...

    Text Solution

    |

  10. A six faced fair dice is thrown until 2 comes, then the probability th...

    Text Solution

    |

  11. If a variable takes the discrete values p+4, p-7/2, p-5/2, p-3, p-2, p...

    Text Solution

    |

  12. The variance of 20 observations is 5 . If eech observation is multipli...

    Text Solution

    |

  13. The mean weight of 9 items is 15 . If one more item is added to the se...

    Text Solution

    |

  14. Consider the frequency distribution of the given pumber If mean of the...

    Text Solution

    |

  15. x1, x2 …. x(34) are numbers such that xi=xi+1-150 forall i in1,2,3, .....

    Text Solution

    |

  16. The mean of 5 observations is 4 and their variancé is 52 . If three of...

    Text Solution

    |

  17. If x1, x2, .. x18 are observations sach the underset(j =1)overset(18)...

    Text Solution

    |

  18. Two cards are drawn without replacement from a wellshuffled deck of 52...

    Text Solution

    |

  19. Let x1, x2 ... xn be n observations sach that sum xi^2=200 and sum xi=...

    Text Solution

    |

  20. If in a frequency distribution, the mean and median are 25 and 26 , th...

    Text Solution

    |