HomeworkLib
Question

t Previous Answers 2 022 Notes Ask Your T The home run percentage is the number of home runs per 100 imes at bat. A randsm sample of 43 professional baseball players gave the following data for home run percentages. 1.6 2.4 1.2 6.6 2.3 0.0 18 2.5 65 18 2.7 2.0 19 1.3 2.7 17 13 2.1 2.8 14 3.8 2.1 3.4 1.3 1.5 2.9 2.6 0.0 4.1 2.9 19 2.4 0.0 1.8 3.1 38 32 16 4.2 0.0 1.2 1.8 2.4 (a) Use a calculator with mean and standard deviation keys to find x and s. (Round your answers to two decienal places -229 s 140 dstrbution table, be to use the (b) Campate 90% coendence irterval ner the population mean μ of home ran percentages for snrdessonal basebal players. /let『you use the Student closest d.f. that is smater. (Round your answers to two decimal places ower imi upper limR percentages for ส prdniona, bosetati peres. (Rond your arwers to two decmai (c) Coreovne avg% cerntence intervai forth. population mears of home nn lower i pper
math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

(b)

Here we have r2.29, s -1.4, n 43 Since populaiton SD is unknown so t critical value will be used. Level of significance: a -0.1 Critical value: t -1.682 Degree of freedom: -n-1-42 The requried confidence interval is: tt-2.29+ (1.4 1.682/sqrt(43)) 2.29 t0.359 (1.931,2.649) Excel function for critical value: TINV(0.1,42) Hence, the required confidence interval is (1.931,2.649)

Answer: (1.93, 2.65)

(c)

Here we have T 2.29, S -1.4, 43 Since populaiton SD is unknown so t critical value will be used Level of significance:a0.01 Critical value: 2.6981 Degree of freedom: df -n-1-42 The requried confidence interval is: 2.29 (1.4*2.6981/sqrt(43)) 2.29t 0.576 (1.714,2.866) Nn Excel function for critical value: TINV(0.01,42) Hence, the required confidence interval is (1.714,2.866)

Answer: (1.71, 2.87)

0 0
Add a comment
Know the answer?
Add Answer to:
t Previous Answers 2 022 Notes Ask Your T The home run percentage is the number...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

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

  • Over the past several months, an adult patient has been treated for tetany (severe muscle spasms)....

    Over the past several months, an adult patient has been treated for tetany (severe muscle spasms). This condition is associated with an average total calcium level below 6 mg/dl. Recently, the patient's total calcium tests gave the following readings (in mg/dl). Assume that the population of x values has an approximately normal distribution. 9.9 8.8 10.9 9.3 9.4 9.8 10.0 9.9 11.2 12.1 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean reading...

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