6:24 1myopenmath.com...In 2011, a U.S. Census report determined that 52% ofcollege students are working students. A researcher thinksthis percentage has changed and surveys 135 collegestudents. The researcher reports that 72 of the 135 areworking students. Is there evidence to support theresearcher's claim at the 1% significance level?a. Determine the null and alternative hypotheses.Ho PH₁: p0°(Select the correctsymbol and enter the value.)b. Determine the test statistic. Round to two decimalplaces.c. Find the p-value. Round to four decimal places.p-value 0.7414=منd. Are the results statistically significant?Fail to reject the null hypothesis.Reject the null hypothesis.e. Write the conclusion.There is sufficient evidence to support theclaim that the percentage of working collegestudents has changed.There is not sufficient evidence to support theclaim that the percentage of working collegestudents has changed.

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Answered: 6:24 1 myopenmath.com ... In 2011, a…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

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questions : "determine the null and alternative hypotheses" and the pnes below it.
Instructor-created question E Question Help Course Note Packet Chapter 9 Page 8 and 10 How do professionals stay on top of their careers? Of 1,000 surveyed members of a business networking website, 580 reported that they engaged in professional networking within the last month. At the 0.01 level of significance, is there evidence that the proportion of all site members who engaged in professional networking within the last month is different from 55%? State the null and alternative hypotheses. Hn На Calculate the test statistic. ZSTAT =O (Type an integer or a decimal. Round to two decimal places as needed.) What is the p-value? The p-value is (Type an integer or a decimal. Round to three decimal places as needed.) State the conclusion of the test. V the null hypothesis. There is V evidence conclude that the proportion of all site members who engaged in professional networking within the last month is different from 55%.
A news article that you read stated that 52% of voters prefer the Democratic candidate. You think that the actual percent is larger. 149 of the 266 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.05 level of significance? For this study, we should use Select an answer t-test for a population mean z-test for a population proportion The null and alternative hypotheses would be: Ho: ? p μ Select an answer ≤ = < ≥ ≠ > (please enter a decimal) H1: ? p μ Select an answer > ≥ ≤ = < ≠ (Please enter a decimal) The test statistic ? z t = (please show your answer to 3 decimal places.)
Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, among 6052 patients treated with this drug, 149 developed the adverse reaction of nausea. Use a 0.05 significance level to test the claim that 3% of users develop nausea. Does nausea appear to be a problematic adverse reaction? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.03 H;:p>0.03 O B. Ho: p#0.03 H;:p= 0.03 OC. Ho: p= 0.03 H4: p+0.03 O D. Ho: p= 0.03 H:p<0.03 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is. (Round to three decimal places as needed.) Identify the conclusion for this hypothesis test.
The following data represent a sample of people's smoking habits and their usage of seat belts while in a car. A researcher wants to determine whether smoking habits and seat belt usage are related. Test the researcher's claim at the a = 0.05 level of significance. No Seat Belt Seat Belt Smoke 67 448 Do not Smoke 327 2,187 *Source: Harris Poll a. Determine the null and alternative hypotheses. O Ho: Smoking habits and seat belt usage have the same distribution. Ha: Smoking habits and seat belt usage follow a different distribution. O Ho: Smoking habits and seat belt usage are independent. Ha: Smoking habits and seat belt usage are dependent. b. Determine the test Statistic. Round to two decimal places. c. Determine the p-value. Round to four decimal places. p-value = d. Make a decision. Reject the null hypothesis. O Fail to reject the null hypothesis. e. Make a conclusion. O There is not sufficient evidence to support the claim that smoking habits and seat belt usage are related. O…
The data in the accompanying table give the weights (in g) of randomly selected quarters that were minted after 1964. The quarters are supposed to have a median weight of 5.670 g. Use the sign test and a 0.01 significance level to test the claim that the median is equal to 5.670 g. Do quarters appear to be minted according to specifications? Click the icon to view the data. What are the null and alternative hypotheses? O A. Ho: Median weight = 5.670 g H₁: Median weight 5.670 g More Info OB. Ho: Median weight ≤ 5.670 g H₁: Median weight = 5.670 g O D. Ho: Median weight = 5.670 g H₁: Median weight # 5.670 g 0 Post-1964 Quarters 5.5863 5.5764 5.6582 5.5649 5.5844 5.7402 5.7367 5.6057 5.5995 5.6165 5.6448 5.5974 5.6609 5.6363 5.6352 5.5986 5.5797 5.5501 5.6238 5.6462 5.6423 5.7021 5.5481 5.7078 5.6055 5.5324 5.7417 5.6776 5.5924 5.5691 5.5666 5.7287 5.6312 5.6017 5.6626 5.6436 5.6634 5.6132 5.5441 5.6363 -
Question Help v Listed below are the lead concentrations in ug/g measured in different traditional medicines. Use a 0.01 significance level to test the claim that the mean lead concentration for all such medicines is less than 18 ug/g. Assume that the sample is a simple random sample. 12.5 17.5 22 6.5 18 18 16 19 6.5 D Assuming all conditions for conducting a hypothesis test are met, what are the null and alternative hypotheses? Ο Α. Ho μ 18 μga H,: µ#18 ug/g O B. Ho: = 18 ug/g H;: µ 18 ug/g O D. Ho: u> 18 µg/g Η : μ< 18 μg Determine the test statistic. |(Round to two decimal places as needed.) Determine the P-value. (Round to three decimal places as needed.) State the final conclusion that addresses the original claim. V Ho. There is evidence to conclude that the mean lead concentration for all such medicines is V 18 μg g. ? Click to select your answer(s). MacBook Ai DII 80 888 F7 FS FA F3 esc F2 & de 23 %24 8 5 6 7 2 3 4 1 P U Q W E 11 J K F G I
Consider a drug that is used to help prevent blood clots in certain patients. In clinical trials, among 5973 patients treated with this drug, 153 developed the adverse reaction of nausea. Use a 0.10 significance level to test the claim that 3% of users develop nausea. Does nausea appear to be a problematic adverse reaction? Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho:p= 0.03 H:p0.03 Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.)
. What is the appropriate analysis? Using statistical equations, give complete statements of the null and alternative hypotheses. Give any appropriate equations that may be generated by the analysis.
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