Plan a hypothesis test (plan for the test- Theory only) to confirm or disprove that Age have great influence on the Knowledge of 20 students Age 0- Age 18- Age 30- Age 40- Age 50- Age 60- Age 70- Age AgeUnknown1729304959697980+Positive 5722522122118414993101Negative 17156455153050843322526314

Age 0-17 18-29 30-39 40-49 50-59 60-69 70-79 80 unknown positive 57 225 221 221 184 149 93 101 0…

Answered: only) to confirm or dis

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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50, 10, 10, 8, 6, 11, 6,11, 9, 9 What is the 1st and 3rd quartile?
I AM RESUBMITTING THIS QUESTION FOR DIFFERENT PARTS. I AM AT THE SECOND NUMBER 2 QUESTION "P-VALUE =". Before the furniture store began its ad campaign, it averaged 160 customers per day. The manager is investigating if the average has changed since the ad came out. The data for the 16 randomly selected days since the ad campaign began is shown below: 131, 127, 148, 143, 141, 153, 158, 145, 138, 163, 164, 148, 166, 154, 170, 133 Assuming that the distribution is normal, what can be concluded at the αα = 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: H0:H0: ? μ p Select an answer < = ≠ > H1:H1: ? p μ Select an answer = > ≠ < The test statistic ? t z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.) The p-value is ? ≤ > αα Based on this, we…
how do I do this problem? Please answer all part of the question and show all work and steps so I am able to easily understand it.
10. In 1974, Loftus and Palmer conducted a classic s mated speed for the "smashed into" group? Use a college students watched a film of an automobile demonstrating how the language used to ask a ques- tion can influence eyewitness memory. In the study, accident and then were asked questions about what they saw. One group was asked, "About how fast were the cars going when they smashed into each other?" b. Compute the estimated value for Cohen's d to 81 92 study = 10 a = 85 = 160 = .01 group was asked the same question except Another the verb was changed to "hit" instead of "smashed into." The "smashed into" group reported signifi- cantly higher estimates of speed than the "hit" group. Suppose a researcher repeats this study with a sample of today's college students and obtains the following rence age di- etter results. to an Estimated Speed her e the = past For Smashed into Hit n = 15 n = 15 12. peri- М 3 40.8 М 3 34.0 SS = 510 SS = 414 S a. Do the results indicate a significantly…
03 Write Appropriate Hypotheses 3) A researcher interested in investigating the effectiveness of two drugs randomly divides 150 volunteers into five equal groups-placebo, double dose of drug 1, single dose of drug 1, double dose of drug 2, single dose of drug 2-then measures the platelet level of each patient. Write the appropriate hypotheses to test the hypotheses that at least one of the population mean platelet levels for these treatments are different. Be sure to identify your parameter and label your groups appropriately.
How do I do this question? Please answer all parts to the question and show all work and steps so I am able to easily understand it.
Can I use 8 questions and have all 8 completed, thank you.
Suppose that the insurance companies randomly surveyed 400 drivers and found that 320 claimed they always buckle up. We are interested in the population proportion of drivers who claim they always buckle up. Use this scenario for the next 4 questions. What is the meaning of p ^ in the context of this scenario? Group of answer choices the proportion of drivers who claim they always buckle up in the POPULATION Neither of these the proportion of drivers who claim they always buckle up in the SAMPLE What is the value of p ^ in the context of this scenario? f you wanted to estimate the true percentage of drivers who claim they always buckle up to within 1% error with 95% confidence, how many drivers would you need to survey? You may use the pilot study as a preliminary estimate of p ^.
February 12, 2009 marked the 20oth anniversary of Charles Darwin's birth. To celebrate, Gallup, a national polling organization, surveyed 1,018 randomly selected American adults about their education level and their beliefs about the theory of evolution. In their sample, 325 of their respondents had some college education and 228 were college graduates. Among the 325 respondents with some college education, 133 said that they believed in the theory of evolution. Among the 228 respondents who were college graduates, 121 said that they believed in the theory of evolution. Construct a 90% confidence interval for the difference between the proportions of college graduates and individuals with some college who believe in the theory of evolution. Round your sample proportions and margin of error to three decimal places. O 0.012 to 0.232 O 0.038 to 0.206 O 0.052 to 0.192 O 0.079 to 0.165 Save for Later Attempts: 0 of 1 used Submit Answer
ific Calculator Of30shg/ckivdfk1p00003g5tgeftOid1 Agroup of researchers in New York wants to test if there is any relationship between living in California and preferring warm weather to cold weather. The researchers send out an online questionnaire to 200 randomly chosen people in the US asking several questions including: "Do you live in California?" and "Do you prefer warm weather to cold weather?". The results are summarized in the table below: Prefers Warm Weather 80 Prefers Cold Weather 42 Lives in California Doesn't Live in California 35 43 Test the null hypothesis that the choices on these two questions are independent versus the alternative that they are dependent. What are the p-value and conclusion of this test if the test is performed at the alpha =0.1 level? %3D p-value = 0.0091; Fail to reject the null hypothesis %3D p-value = 0.0039; Reject the null hypothesis p-value = 0.0039; Fail to reject the null hypothesis p-value = 0.0911; Reject the null hypothesis NEXT
Students in an elementary school both boys and girls were asked if they are willing to write a letter to their mother on Mother's Day as an assignment. Out of the 30 boys, only 9 answered "yes" while out of the 45 girls, 39 said that they are willing to write to their mother on Mother's Day. At 99% level of confidence, is there enough evidence to say that the proportion who said "yes" is more for girls than boys? . Но: На: Test Statistic: Test Procedure: Decision Rule: Computation: Decision: Conclusion:
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