HomeworkLib
Question

A study uses a random sample of size 15. The test statistic for testing Upper H...

A study uses a random sample of size 15. The test statistic for testing Upper H 0 : mu equals 12 versus Upper H Subscript a Baseline : mu not equals 12 is t equals negative 2.5 . Find the approximate​ P-value. Round your answer to two decimal places. A. 0.013 B. 0.050 C. 0.990 D. 0.025 E. The​ P-value cannot be determined without the sample standard deviation.

(please explain the steps using TI84 calculator and the keys to enter in the calculator!!!)

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

Option D) is correct.

P value is 0.025...............................By using Excel command TDIST(-2.5,14,2)

Degree of freedom =n-1 = 15-1 = 14

P value procedure by using TI-84
Find the absolute value of t_calc
>>2nd DISTR
>>Scroll down to tcdf(
>> ENTER
>> Now enter: |t_calc|, 1000, df)
>> ENTER
>>Output is ½ of the P-value so
>> Multiply result by 2

0 0
Add a comment
Know the answer?
Add Answer to:
A study uses a random sample of size 15. The test statistic for testing Upper H...
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

  • A study uses a random sample of size 15. The test statistic for testing Upper H...

    A study uses a random sample of size 15. The test statistic for testing Upper H 0 : mu equals 12 versus Upper H Subscript a Baseline : mu not equals 12 is t equals negative 2.5 . Find the approximate P-value. Round your answer to two decimal places.

  • A study has a random sample of 27 subjects. The test statistic for testing Upper H...

    A study has a random sample of 27 subjects. The test statistic for testing Upper H 0 : mu equals 150H0: μ=150 is tequals=2.53. Find the approximate P-value for the alternative a. Upper H Subscript a Baseline : muHa: μnot equals≠150, b. Upper H Subscript a Baseline : muHa: μgreater than>150, and c. Upper H Subscript a Baseline : muHa: μless than<150.

  • Use the t-distribution and the given sample results to complete the test of the given hypotheses....

    Use the t-distribution and the given sample results to complete the test of the given hypotheses. Assume the results come from random samples, and if the sample sizes are small, assume the underlying distributions are relatively normal. Test Upper H Subscript 0 Baseline : mu Subscript 1 Baseline equals mu Subscript 2 vs Upper H Subscript a Baseline : mu Subscript 1 Baseline not-equals mu Subscript 2 using the sample results x Overscript bar EndScripts Subscript 1 Baseline equals 15.3,...

  • Consider testing Upper H 0 : mu equals 20H0: μ=20 against Upper H Subscript a Baseline...

    Consider testing Upper H 0 : mu equals 20H0: μ=20 against Upper H Subscript a Baseline : mu less than 20Ha: μ<20 where muμ is the mean number of latex gloves used per week by all hospital​ employees, based on the summary statistics nequals=4444​, x overbarxequals=19.219.2​, and sequals=11.211.2. Compute the​ p-value of the test.

  • In a test of Upper H 0​: mu=100 against Upper H Subscript a​: mu not equals​100,...

    In a test of Upper H 0​: mu=100 against Upper H Subscript a​: mu not equals​100, the sample data yielded the test statistic z=2.24. Find the Upper P​-value for the test.

  • To test Upper H 0 : sigma =2.3 versus Upper H 1 : sigma greater than...

    To test Upper H 0 : sigma =2.3 versus Upper H 1 : sigma greater than 2.3​, a random sample of size n equals 16 is obtained from a population that is known to be normally distributed. ​(a) If the sample standard deviation is determined to be s= 2.5​, compute the test statistic. ​(b) If the researcher decides to test this hypothesis at the alpha = 0.10 level of​ significance, use technology to determine the​ P-value. ​(c) Will the researcher...

  • A study has a random sample of 23 subjects. The test statistic for testing Ho: H=50...

    A study has a random sample of 23 subjects. The test statistic for testing Ho: H=50 ist= 1.77. Find the approximate P-value for the alternative a. H: * 50, b. He: >50, and c. H : <50. a. Find the P-value for the alternative He:*50. P-value = (Round to three decimal places as needed.) b. Find the P-value for the alternative He: >50. P-value = (Round to three decimal places as needed.) c. Find the P-value for the alternative H,:<50....

  • Researchers wanted to determine if the psychological profile of healthy children was different than for children...

    Researchers wanted to determine if the psychological profile of healthy children was different than for children suffering from recurrent abdominal pain? (RAP) or recurring headaches. A total of 210 children and adolescents were studied and their psychological profiles were graded according to a child behavior checklist. Children were stratified in two age? groups: 4 to 11 years and 12 to 18 years. The results of the study are summarized in the accompanying table. Complete parts ?(a) through? (f) below. n...

  • Data were collected on the annual mortality rate​ (deaths per​ 100,000) for males in 61 large...

    Data were collected on the annual mortality rate​ (deaths per​ 100,000) for males in 61 large towns in England and Wales. The data set also notes for each town whether it was south or north of Derby. The summary statistics are given below. Is there a significant difference in mortality rates in the two​ regions? Answer parts a and b. Assume a significance level of alphaequals0.05. Group Count Mean Median StdDev North 28 1612.31 1612 125.97 South 33 1592.56 1575...

  • A study has a random sample of 29 test subjects. the test statistic for testing H0:...

    A study has a random sample of 29 test subjects. the test statistic for testing H0: u=100 is t= 1.81. find the approximate P- value for the alternative. A) Ha: u (does not equal) 100 p-value=?? B) Ha : u > 100 p-value=?? C) Ha: u < 100 p-value=??

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