C- level = 95% =0.95
Using Z table check 0.975 in the middle of the table and note correspoding row and column number to get critical value or use excel command =NORMSINV(0.975)
Zc = critical value = 1.96
E = 0.04
Part a :
p = 28% = 0.28
Sample size :
n = 0.2016 *2401
n = 484 . 0416
Answer : n = 484 ( rounded )
Part b .
Not any prior estimate is given
p = 0.50
Sample size :
n = 0.25 *2401
n = 600.25
Answer : n = 600
a and b please A researcher wishes to estimate the percentage of adults who support abolishing...
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 4 percentage points with 90% confidence if (a) he uses a previous estimate of 38%? (b) he does not use any prior estimates? Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) na (Round up to the nearest...
A researcher wishes to estimate the percentage of adults who support abolishing the penny. what size sample should be obtained if he wishes the estimate to be within 4 percentage points with 90% confidence if: a.) he uses previous estimate of 28% b.) he does not use any prior estimates? c a Arenewcher wishes to estimate the percentage of adults who support abolishing the penny Whatsze sample should be obtained if he wishes the estimate to be within 4 percentage...
Q4. A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 4 percentage points with 90% confidence if (a) he uses a previous estimate of 32%? (b) he does not use any prior estimates? (a)n(Round up to the nearest integer.) (b)n-(Round up to the nearest integer.)
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 2 percentage points with 95% confidence if (a) he uses a previous estimate of 36%? (b) he does not use any prior estimates? (a) n= (Round up to the nearest integer.) (b) n= (Round up to the nearest integer.)
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 3 percentage points with 90% confidence if (a) he uses a previous estimate of 36%? (b) he does not use any prior estimates? (a) nRound up to the nearest integer) (b)n(Round up to the nearest integer)
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 3 percentage points with 95% confidence if (a) he uses a previous estimate of 26%? (b) he does not use any prior estimates? (a) na (Round up to the nearest integer.) (b)(Round up to the nearest integer.)
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 2 percentage points with 90% confidence if (a) he uses a previous estimate of 36%? (b) he does not use any prior estimates? (a) n(Round up to the nearest integer) (b) n (Round up to the nearest integer ) Enter your answer in each of the answer boxes Save for Later Chapter...
A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 5 percentage points with 95% confidence if(a) he uses a previous estimate of 32%? (b) he does not use any prior estimates? (a) nequals=nothing (Round up to the nearest integer.)(b) nequals=nothing (Round up to the nearest integer.)
A researcher wishes to estimate the percentage of adults who support abolishing the penny What stresample should be obtained if he wishes the estimate to be within 4 percentage points wm 99% confidence (a) he uses a previous estimate of 2012 b) he does not use any prior estimates? (a) Round up to the nearest integer)
this region A researcher wishes to estimate the percentage of adults who support abolishing the penny. What size sample should be obtained if he wishes the estimate to be within 5 percentage points with 90% confidence if 5. he uses a previous estimate of 38% b. he does not use any prior estimates? Page 4 of 4