frequency distribution classes

The distribution of the ages of the members of a colony is as follows : Age Frequency 0 - 20 35 21 - 30 15 31 - 40 20 41 - 50 25 51 - 60 15 61 - up 10 If a person is selected at random, then find the probability that his/her age is over 41 years and under 60. => 1 8 or 1 3 or 5 ..

Intensity of sound depends on its frequency. The human ear is more sensitive to the middle part of the audible range. Thus, a sound of a frequency in the middle of the audible range will appear to be louder than the sound of a frequency near the extremities of the ran..

The frequency distribution for the systolic blood pressure readings (in millimeters of mercury - mm Hg) of 200 randomly selected college students is given. Systolic blood pressure reading Number of students 89.5 - 104.5 24 104.5 - 119.5 62 119.5 - 134.5 72 134.5 - 149.5 26 149.5..

A survey of 47 selected distributions showed these number of days that the load took to reach the shipment from the day it was ordered. Days Frequency 1 - 4 12 5 - 8 8 9 - 12 15 13 - 16 5 17 - 20 7 Find the mean and the modal class of the data. => 9.39 and 9 or 9.39 an..

The mean of the following frequency distribution is 18.5. Find the value of t . x 18 23 t 15 16 f 2 9 4 8 7 => 30 or 20 or 30.6 or 20.6..

The mean of the frequency distribution shown is 18.5. Find the value of t . x 18 23 t 15 16 f 2 9 4 8 7 => 20 or 30.6 or 20.6 or 30..

Hundred digits were chosen at random from a set of tables. The frequencies of the digits were: Digit 0 1 2 3 4 5 6 7 8 9 Frequency 8 7 13 10 12 14 8 7 9 12 At level of significance α = 0.05, find the chi-square test value and check if the digits distributed are i..

With regards to distribution they are of 3 types. National, multi national and internationa..

Which of the following statement(s) is/are false? I. Data such as blood types (A, B, AB, O) can be organised into a categorical frequency distribution. II. Except for rounding errors, relative frequencies should add up to 100. III. A statistical device used in explorat..

The HR manager for a company asked its employees to give the details about their residing places. The details obtained by him are categorized into places as recorded: A = Atkinson Square, C = Caribbean Point, D = Dream Valley, E = Environ Enclave, T = Township, M = Montessori Enclave. A T E C A M D..