Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Determining Sample Size for Estimating poportions
It is necessary to determining the sample size for a problem involving proportions. This deals with the percentage of frequency of occurrence. The standard deviation is computed considering the proportions of the happening of the particular event. If the frequency of occurrence is known as p and the frequency of non occurrence is known as 1 , the standard deviation of the proportion maybe
p = √p q/n
The samples size is determine as discussed earlier. The precision and population size have been the deciding factors for determining the sample size. The precision can again be expressed absolutely or relatively. Absolute precision involves that the estimate will be within plus or minus of the true value i ,e,± 5 percentage points of the true value. If the sample elements are selected independently and if the sample size is small the correct distribution of the sample proportion will be binomial. It is convenient to employ the normal approximation for estimating the sample size. After the sample is drawn and the sample promotion determined the researcher determines the confidence interval.
Importance of models
A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i
#questioA paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y
b. A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y pape
Calculation of Standard Deviation - Continuous Series: In the continuous series the methods of calculation standard deviation is almost the same as in a discrete frequency distrib
Chi square Test for the Population variance When we want to test that a random sample has been drawn from a normal population having specified variance then X2 statist
Type of Measures of Dispersion a. Absolute Measure: The measure of dispersion which is expressed in terms of the units of the observations( e, g, Rupees , metre ,
Maximize w = 5x -2y +3z subject to 2x +2y -z>=2 y + 3z
Ask questioA farmer intends to drill a well for his herd. In the past, only 80% of the wells drilled in this area were successful at 12 metres of depth. On finding no water at 12 m
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd