Question

Homework: 3-2 MyStatLab: Module Three Problem Set Save Score: 0 of 5 pts 14 of 14 (13 complete) HW Score: 70.52%, 45.84 of 65 pts 9.2.41 EQuestion Help A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 4 points with 99% confidence assuming s 15.5 based on earlier studies? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required? 昌Click the icon to view a partial table of critical values. A 99% confidence level requires 1100 subjects. (Round up to the nearest subject.) A 95% confidence level requires 11 subjects. (Round up to the nearest subject.) Partial Critical Value Table -X Level of Confidence, Area in Each Tail,Critical Value, z (1-1) . 100% 90% 95% 99% 0.05 0.025 0.005 1.645 1.96 2.575 Print Done Enter your answer in the answer box and then click Check Answer. Clear All remaining
0 0
Add a comment Improve this question Transcribed image text
Answer #1
  1. n = ((Z0.005 *Sigma/ E)2 = ((2.576*15.5)/4)2 = 99.64

                     (Round to the nearest whole number)

                     n = 100

  1. n = ((Z0.025 * Sigma)/E)2 = ((1.96*15.5)/4)2   = 57.68

     (Round to the nearest whole number)

      n = 58

Add a comment
Know the answer?
Add Answer to:
Homework: 3-2 MyStatLab: Module Three Problem Set Save Score: 0 of 5 pts 14 of 14...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How...

    A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99% confidence assuming s = 11.1 based on earlier studies? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required? 5 Click the icon to view a partial table of critical values. A 99% confidence level requires subjects. (Round up...

  • A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How...

    A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99% confidence assuming s=13.9 based on earlier​ studies? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size​ required? Partial Critical Value Table Level of​ Confidence, ​(1α​) times •​100% Area in Each​ Tail, α/2 Critical​ Value, zα/2 ​90% 0.05 1.645 ​95%...

  • 9.2.41 Question Help A doctor wants to estimate the mean HDL cholesterol of all 20-to 29-year-old...

    9.2.41 Question Help A doctor wants to estimate the mean HDL cholesterol of all 20-to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99% confidence assuming s-11.9 based on earlier studies? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values A 99% confidence level requires subjects (Round up to...

  • Homework: 3-2 MyStatLab: Module Three Problem Set Save Score: 0 of 5 pts 70114 (6 complete)...

    Homework: 3-2 MyStatLab: Module Three Problem Set Save Score: 0 of 5 pts 70114 (6 complete) ▼ Hw Score: 31.46%, 20.45 of 65 pts 9.1.35 EQuestion Help A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.04 with 95% confidence if (a) she uses a previous estimate of 0.54 (b) she does not use any prior estimates? (a) n- 596 (Round...

  • Homework: 3-2 MyStatLab: Module Three Problem Set core: 0 of 5 pts Save 2 of 14...

    Homework: 3-2 MyStatLab: Module Three Problem Set core: 0 of 5 pts Save 2 of 14 (1 complete) HW Score: 6.15%, 4 of 65 pt EQuestion Help Determine the point estimate of the population proportion, the margin of error for the following confidence interval, and the number of individuals in the sample with the specified characteristic, x, for the sample size provided. Lower bound-0.313, upper bound 0.817, n 1200 The point estimate of the population proportion is (Round to the...

  • Homework: 3-2 MyStatLab: Module Three Problem Save Set Score: 0 of 5 pts 9.1.35 7 of...

    Homework: 3-2 MyStatLab: Module Three Problem Save Set Score: 0 of 5 pts 9.1.35 7 of 14 (4 complete) ▼ HW Score: 24.74%, 16.08 of 65 pts -Question Help * A researcher wishes to estimate the proportion of adults who have high-speed Internet access. What size sample should be obtained if she wishes the estimate to be within 0.04 with 95% confidence if (a) she uses a previous estimate of 0.54? (b) she does not use any prior estimates? (a)...

  • 9.2.41 Question Help A doctor wants to estimate the mean HDL cholesterol of all 20-to 29-year-old...

    9.2.41 Question Help A doctor wants to estimate the mean HDL cholesterol of all 20-to 29-year-old females. How many subjects are needed to estimati the mean HDL cholesterol within 3 points with 99% confidence assuming s = 13.3 based on earlier studies? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values. A 99% confidence level requires 131 subjects....

  • A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How...

    A doctor wants to estimate the mean HDL cholesterol of all​ 20- to​ 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99 % confidence assuming s equals 10.1 based on earlier​ studies? Suppose the doctor would be content with 95 % confidence. How does the decrease in confidence affect the sample size​ required? LOADING... Click the icon to view a partial table of critical values. A​ 99% confidence level requires nothing...

  • A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How...

    A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 4 points with 99% confidence assuming s= 18.4 based on earlier studies? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values A 99% confidence level requires subjects (Round up to the...

  • ICOL. ICULTUnTapUI SUCIU This Question: 1 pt 12 of 23 (19 completo) A doctor wants to...

    ICOL. ICULTUnTapUI SUCIU This Question: 1 pt 12 of 23 (19 completo) A doctor wants to estimate the mean HDL cholesterol of all 20 to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 4 points with 99% confider confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values. Partial Critical Value Table A 99% confidence level requires subjects. (Round up to...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT