4. a) Suppose Ho: μ=120 is tested against Ho: µ ‡ 120. If σ=10 and n=16, what P-value isassociated with a sample mean of X₁ =122.3?nb) Suppose Ho: μ=30 is tested against Ho: µ>30 using n=16 observations (normally distributed)and if 1- B=0.85 when µ=34, what does a equal? Assume ♂=9.

4. (a) Given Information: Null Hypothesis H0:μ=120 Alternative Hypothesis Ha:μ≠120 Population…

Answered: 4. a) Suppose Ho: u=120 is tested…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

5.A researcher is interested in the effectiveness of a new program at reducing the average systolicblood pressure in a population with a new anti-hypertensive medication. The researcher wants totest the hypothesis that the mean difference in systolic blood pressure is greater than 40 mmHG.Which of the following represents the correct null and alternative hypotheses for the study?A) Ho: µ1 - µ2 = 0, Ha: µ1 - µ2 = 40B) Ho: µ1 - µ2 = 40 Ha: µ1 - µ2 ≠ 40C) Ho: µD = 40 Ha: µD >40D) Ho: µD = 40 Ha: µD ≠40
For Z-test used to analyze data on tablet weight in a batch with Ho: u = 300 mg and at a = 0.05. If a sample was taken from the batch and Z-score of the mean tablet weight of the sample was correctly calculated as 1.9. P-value is which suggest that, O 0.047, The mean tablet of the batch is not significantly different from 300 O 0.0574, The mean tablet of the batch is significantly different from 300 O 0.0287, The mean tablet of the batch is not significantly different from 300 O 0.047, The mean tablet of the batch is significantly different from 300 O0.9713, The mean tablet of the batch is significantly different from 300 0.9713, The mean tablet of the batch is not significantly different from 300 0.0287, The mean tablet of the batch is significantly different from 300 0.0574, The mean tablet of the batch is not significantly different from 300 Next pc
The recommended daily dietary allowance for zinc among males older than age 50 years is 15 mg/day. An article reports the following summary data on intake for a sample of males age 65−74 years: n = 116, x = 12.5, and s = 6.35. Does this data indicate that average daily zinc intake in the population of all males age 65−74 falls below the recommended allowance? (Use ? = 0.05.)State the appropriate null and alternative hypotheses. H0: ? = 15Ha: ? ≠ 15H0: ? = 15Ha: ? > 15 H0: ? = 15Ha: ? ≤ 15H0: ? = 15Ha: ? < 15 Calculate the test statistic and determine the P-value. (Round your test statistic to two decimal places and your P-value to four decimal places.) z = P-value = State the conclusion in the problem context. Do not reject the null hypothesis. There is not sufficient evidence that average daily zinc intake falls below 15 mg/day.Reject the null hypothesis. There is not sufficient evidence that average daily zinc intake falls below 15 mg/day. Do not reject…
Conduct a Chi-square test between two appropriate variables of your choice to investigate an association. Obtain column %s, count and expected count in the crosstabs table. Describe what the table tells you about the association in 2-3 sentences, reporting some %s and comparing select observed/expected frequencies in various cells to describe the association. Write out the null and research hypothesis Report the χ² critical value for an alpha level of 0.05. Report χ² obtained/test stat and sig/p value from the output. What is your decision about the hypothesized association? Write out a conclusion about the association. Attach your output including the cross-tabulation table and the chi-square test.
a rescarch study reports tCH)=2.n. How many in the study? CHOW big was the sample? Is this E'statistic sufticrent to reject the nvil hypathos using a twotaiked test with a .oS? individuals participated
8. a) The mean of 6 different plots of acidic soil samples is 3.2. An extra plot with pH value 3.9 is included in the sample. What is the new mean? b) Five soil samples have a mean of 12 dS/m for soil electrical conductivity (EC). When a soil sample was removed, the mean is 11 dS/m. What is the value of the soil EC been removed? 9. Loss of calcium is a serious problem for older women. At the beginning of a study on the influence of exercise on the rate of loss, the amounts of bone mineral content in the radius bone of the dominant hand of 11 elderly women were: 0.88, 1.06, 0.90, 1.06, 0.79, 0.80, 0.85, 0.91, 0.94, 1.00, 0.72 Calculate: (a) The mean. (b) The median. (c) The mode. (d) A researcher says: "The mode seems to be the best average to represent the data in this survey." Give ONE reason to support this statement.
17. please state all 6 steps of the p method clearly please! Strength of concrete: The compressive strength, in kilopascals, was measured for concrete blocks from five different batches of concrete, both three and six days after pouring. The data are as follows. Can you conclude that the mean strength after three days differs from the mean strength after six days? Let μ1 represent the mean strength after three days and =μd−μ1μ2 . Use the =α0.05 level and the P -value method with the TI-84 Plus calculator. Block 1 2 3 4 5 After 3 days 1371 1379 1344 1383 1386 After 6 days 1328 1337 1344 1321 1345
6. A researcher reports an F-ratio with dfeween = 2 and df 3D2 = 30 for an independent-measures within ANOVA. a. How many treatment conditions were compared in the experiment? b. How many subjects participated in the experiment? ts
9
Let XXN(u. 16). How much should the sample size he for testing HeiH = 24 rs. He = 25 ata = 0.025 and ß = 0.409 (a) 77 (b) 48 (c) 35 (d) 28 (e) None
A study is conducted to determine factors in solving missing persons cases. The outcome is Y; which is equal to 1 if the i-th missing person case is unsolved and 0 if it is solved. Let covariate X1; be an indicator equal to 1 if the i-th case is female and 0 for male. Let X2i be a categorical covariate of age group for the i-th case. Categories are less than 14 years old (base level/group), between 14 and 19 years old, and older than 19 years. Set u = P(Y = 1) and the following model is fit: logit(u) = Bo + BịI(Female) + B2I(14 to 19 yrs old) + B3I(> 19 yrs old) The output from the model is below: Estimate S.E. p-value Bo -4.565 0.128 0.380 0.087 B2 Вз -0.198 0.042 0.163 1.128 0.133 a. Using the logistic regression output, calculate the estimated odds ratio of a case being unsolved (again Y=1 is unsolved and Y=0 is solved) comparing females to males (female is the numerator odds) of the same age. Interpret this odds ratio in context of the problem. iii b. Create a 95% confidence…
Albumin is a liver protein that helps circulate vitamins throughout the body. Reduced Albumin has been associated with severe illness with Covid-19 patients. Suppose we wanted to conduct a study to compare the mean Albumin concentration (g/L) between a sample of adult patients hospitalized for Covid 19 (Sample Mean= 32.8, s=6.0) to the mean albumin concentration (g/L) of healthy adults (u=34.1, o=7.13). How many patients would need to enroll from the hospital to conduct this study with 99% confidence, and 80% power? A. 267 B. 120 C. 352 D. 225

SEE MORE QUESTIONS

Recommended textbooks for you

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

MATLAB: An Introduction with Applications

Statistics

ISBN:

9781119256830

Author:

Amos Gilat

Publisher:

John Wiley & Sons Inc

Probability and Statistics for Engineering and th…

Statistics

ISBN:

9781305251809

Author:

Jay L. Devore

Publisher:

Cengage Learning

Statistics for The Behavioral Sciences (MindTap C…

Statistics

ISBN:

9781305504912

Author:

Frederick J Gravetter, Larry B. Wallnau

Publisher:

Cengage Learning

Elementary Statistics: Picturing the World (7th E…

Statistics

ISBN:

9780134683416

Author:

Ron Larson, Betsy Farber

Publisher:

PEARSON

The Basic Practice of Statistics

Statistics

ISBN:

9781319042578

Author:

David S. Moore, William I. Notz, Michael A. Fligner

Publisher:

W. H. Freeman

Introduction to the Practice of Statistics

Statistics

ISBN:

9781319013387

Author:

David S. Moore, George P. McCabe, Bruce A. Craig

Publisher:

W. H. Freeman

SEE MORE TEXTBOOKS

4. a) Suppose Ho: u=120 is tested against Ho: μ ‡ 120. If o=10 and n=16, what P-value is associated with a sample mean of X=122.3? b) Suppose H₁: µ=30 is tested against Họ: µ>30 using n=16 observations (normally distributed and if 1- ß=0.85 when u=34, what does a equal? Assume o=9.