N ONNO2The rejection region is(Ho: u= HoHa: uHo(iii)Use a 2%.422The rejection region isny class

Answered: N O N NO 2 The rejection region is (Ho:…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Example 14.8 There are four classes using different methods of programmed learning of Business Sta- tistics. All the four classes were given an identical test and the students were graded on a 10-point basis. Samples of size 5 were drawn from each class. The data are as follows:
Big Sweets candy company is testing one of its machines in the factory to make sure it is producing more than 96% high-quality candy (Ho: P = 0.96; Ha: p > 0.96; a = 0.05). The test results in a p-value of 0.12. However, the company is unaware that it is actually producing 98% high-quality candy. What MOST likely happens as a result of the testing? O The company rejects Ho, making a Type I error. O The company fails to reject Ho, making a Type I error. O The company rejects Ho, making a Type II error. O The company fails to reject Ho, making a Type II error. O The company rejects Ho correctly.
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A clinical microbiology laboratory compared the frequency of isolation of DNA hybridization probe to a culture method for the sexually transmitted bacterium Neisseria gonorrhaeae. The frequency of isolation from clinical specimens was historically 10%. The lab ran 100 split samples, and the results are presented in the table below. Table. Comparison of the Distribution of Negative and Positive Results for the DNA Probe and Culture Methods. Culture Results DNA Probe Results Positive (D) Negative (D-) Positive (T) 8 4 Negative (T-) 2 92 What is the sensitivity of the test? I choose c wouldn't the sensitivity been 0.02 ? or my calculations is wrong A. 0.88 or 88% B. 0.8 or 80% C. 0.02 or 2% D. 0.81 or 81%
Weight Gain of Athletes A researcher wishes to see whether there is any difference in the weight gains of athletes following one of three special diets. Athletes are randomly assigned to three groups and placed on the diet for 6 weeks. The weight gains (in pounds) are shown here. At a=0.005, can the researcher conclude that there is a difference in the diets? Diet A: 3, 4, 5, 6 Diet B: 12, 13, 14, 6, 7, 8 Diet C: 3, 4, 5 ,6 Part 2. State the hypotheses and identify the claim with the correct hypothesis. Part 3. Compute the test value. Always round score values to two decimal places. Part 4. Find the -value. Round the answer to four decimal places. Part 5. Reject or not to reject the null hypothesis.
ment (natural product) group and a placebo group. Section II: Free Response Show all your work. Indicate clea the correctness of your methods as well as on the accuracy T11.11 Agovernment report says that the average amount of money spent per U.S. household per week on food is about $158. A random sample of 50 house- holds in a small city is selected, and their weekly spending on food is recorded. The sample data have a mean of $165 and a standard deviation of $32. Is there convincing evidence that the mean weekly spending on food in this city differs from the national figure of $1587 (a) State appropriate hypotheses for performing a significance test in this setting. Be suure to define the parameter of interest. (b) The distribution of household spending in this small city is heavily skewed to the right. Explain why the Normal/Large Sample condition is met in this case. (c) The Pvalue of the test is 0.128. Interpret this value. What conclusion would you make? T11.12 As a non-native…
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SITY Suppose the boxplot below depicts the daily sales (in KD) for a sample of 260 days for a given retail store. A Note that: • B= 868 KD ● C= 1028 KD D = 1188 KD ● Questions: B - The distribution of the data is symmetric - The data depicted in the boxplot includes - How many days had sales above 1188 KD? D - What percentage of days had sales above 868 KD? KD + - What is the interquartile range (IQR) for this data? IQR = - What is the value of point E? days E * days % - The number of days that had sales between 868 KD and 1188 KD is days
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N O N NO 2 The rejection region is (Ho: u= Ho Ha: uHo (iii) Use a 2% . 4 2 2 The rejection region is ny class