In a study of government financial aid for college students, it becomes necessary to estimate that percentage. Use a 0.05 margin of error and use a confidence level of 99%. Complete parts (a) through (c) below. percentage of full-time college students who earn a bachelor's degree in four years or less. Find the sample size needed to estimate a. Assume that nothing is known about the percentage to be estimated. (Round up to the nearest integer.) b. Assume prior studies have shown that about 60% of full-time students earn bachelor's degrees in four years or less. (Round up to the nearest integer.) c. Does the added knowledge in part (b) have much of an effect on the sample size? O A. Yes, using the additional survey information from part (b) only slightly increases the sample size O B. Yes, using the additional survey information from part (b) dramatically reduces the sample size. O C. No, using the additional survey information from part (b) only slightly reduces the sample size O D. No, using the additional survey information from part (b) does not change the sample sze.

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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 0.05 margin of error and use a confidence level of 99%. Complete parts (a) through (c) below.
a. Assume that nothing is known about the percentage to be estimated.
(Round up to the nearest integer.)
b. Assume prior studies have shown that about 60% of full-time students earn bachelor's degrees in four years or less.
%3D
(Round up to the nearest integer.)
c. Does the added knowledge in part (b) have much of an effect on the sample size?
O A. Yes, using the additional survey information from part (b) only slightly increases the sample size.
O B. Yes, using the additional survey information from part (b) dramatically reduces the sample size.
O C. No, using the additional survey information from part (b) only slightly reduces the sample size.
O D. No, using the additional survey information from part (b) does not change the sample size.
Click to select your answer(s).
Next
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Transcribed Image Text: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 0.05 margin of error and use a confidence level of 99%. Complete parts (a) through (c) below. a. Assume that nothing is known about the percentage to be estimated. (Round up to the nearest integer.) b. Assume prior studies have shown that about 60% of full-time students earn bachelor's degrees in four years or less. %3D (Round up to the nearest integer.) c. Does the added knowledge in part (b) have much of an effect on the sample size? O A. Yes, using the additional survey information from part (b) only slightly increases the sample size. O B. Yes, using the additional survey information from part (b) dramatically reduces the sample size. O C. No, using the additional survey information from part (b) only slightly reduces the sample size. O D. No, using the additional survey information from part (b) does not change the sample size. Click to select your answer(s). Next 5:49 PM 7/25/2021. 5) 6. hp home end pg up ins prt sc delete f12 f9 f10 II f7 144 f5 f6 f3 f4 ? 米 esc unu lock & backspace $ 4 6. 23 6. 7 80 1 3 { home R. T Y tab Q enter 4 J K L G s lock pause 1 shift end V N M P. 96 %24 D. 21E NL Ofice Box 30
An IQ test is designed so that the mean is 100 and the standard deviation is 16 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with
90% confidence that the sample mean is within 3 IQ points of the true mean. Assume that o=16 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world
calculation.
The required sample size is
(Round up to the nearest integer.)
Would it be reasonable to sample this number of students?
O No. This number of IQ test scores is a fairly large number.
O No. This number of IQ test scores is a fairly small number.
O Yes. This number of IQ test scores is a fairly large number.
O Yes. This number of IQ test scores is a fairly small number.
Click to select your answer(s).
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Transcribed Image Text:An IQ test is designed so that the mean is 100 and the standard deviation is 16 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 90% confidence that the sample mean is within 3 IQ points of the true mean. Assume that o=16 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation. The required sample size is (Round up to the nearest integer.) Would it be reasonable to sample this number of students? O No. This number of IQ test scores is a fairly large number. O No. This number of IQ test scores is a fairly small number. O Yes. This number of IQ test scores is a fairly large number. O Yes. This number of IQ test scores is a fairly small number. Click to select your answer(s). Next 5:50 PM 7/25/2021. hp TOTAL AC 08/19/2021 end ins prt sc delete home dn 6d f11 f12 f1o f7 f4 fs 米 IOI f2 esc unu & backspace lock % 6 8. 1 home R T. Y Q W tab enter J K L. G A caps lock pause shift end C V shift 1 alt ctrl alt ctri fn Σ 4. %24 D. %23 216 N Inast Bank
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