In a study of government financial aid for college​ students, it becomes necessary to estimate the percentage of​full-time college students who earn a​ bachelor's degree in four years or less. Find...




In a study of government financial aid for college​ students, it becomes necessary to estimate the percentage of​full-time college students who earn a​ bachelor's degree in four years or less. Find the sample size needed to estimate that percentage. Use a
0.02

margin of error and use a confidence level of
95​%.

Complete parts​ (a) through​(c) below.










a. Assume that nothing is known about the percentage to be estimated.



n=nothing


​(Round up to the nearest​ integer.)

b. Assume prior studies have shown that about
45​%

of​ full-time students earn​ bachelor's degrees in four years or less.



n=nothing


​(Round up to the nearest​ integer.)

c. Does the added knowledge in part​ (b) have much of an effect on the sample​ size?







A.


​Yes, using the additional survey information from part​ (b) only slightly increases the sample size.






B.


​No, using the additional survey information from part​ (b) does not change the sample size.






C.


​No, using the additional survey information from part​ (b) only slightly reduces the sample size.






D.


​Yes, using the additional survey information from part​ (b) dramatically reduces the sample size.








Jun 10, 2022
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