In 1945, an organization asked 1543 randomly sampled American citizens, "Do you think we can develop a way toprotect ourselves from atomic bombs in case others tried to use them against us?" with 791 responding yes. Did amajority of the citizens feel the country could develop a way to protect itself from atomic bombs in 1945? Use thea = 0.01 level of significance.What are the null and alternative hypotheses?Hoversus H₁:(Type integers or decimals.)QUEEN

A sample of 1543 citizens area selected o which 791 responding the given statement yes.

Answered: In 1945, an organization asked 1543…

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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please answer d, e, f
In 1945, an organization asked 1408 randomly sampled American citizens, "Do you think we can develop a way to protect ourselves from atomic bombs in case others tried to use them against us?" with 734 responding yes. Did a majority of the citizens feel the country could develop a way to protect itself from atomic bombs in 1945? Use the α = 0.1 level of significance. What are the null and alternative hypotheses? Ho: versus H₁: (Type integers or decimals.) Determine the test statistic, Zo. (Round to two decimal places as needed.) Use technology to determine the P-value for the test statistic. Zo = The P-value is (Round to three decimal places as needed.) What is the correct conclusion at the α = 0.1 level of significance? than the level of significance, the null hypothesis. There sufficient Since the P-value is evidence to conclude that the majority of the citizens feel the country could develop a way to protect itself from atomic bombs.
According to a Pew Research Center study, in May 2011, 33% of all American adults had a smart phone (one which the user can use to read email and surf the Internet). A communications professor at a university believes this percentage is lower among community college students. She selects 352 community college students at random and finds that 122 of them have a smart phone. In testing the hypotheses: Ho: p= 0.33 versus Ha: p < 0.33 Do the hypothesis test. Use a level of significance of a = 0.05; Use the unrounded values in Excel to find the answers for #3 and #4. 4. Find the p-value.-- 5. The communication professor should the null hypothesis.
In 1945, an organization asked 1521 randomly sampled American citizens, "Do you think we can develop a way to protect ourselves from atomic bombs in case others tried to use them against us?" with 821 responding yes. Did a majority of the citizens feel the country could develop a way to protect itself from atomic bombs in 1945? Use the α = 0.05 level of significance. What are the null and alternative hypotheses? Ho: versus H₁: (Type integers or decimals.) Determine the test statistic, Zo. Zo = (Round to two decimal places as needed.) Use technology to determine the P-value for the test statistic. The P-value is (Round to three decimal places as needed.) What is the correct conclusion at the α = 0.05 level of significance? than the level of significance, Since the P-value is develop a way to protect itself from atomic bombs. the null hypothesis. There sufficient evidence to conclude that the majority of the citizens feel the country could
You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 54% at a level of significance of a = 0.05. According to your sample, 33 out of 56 potential voters prefer the Democratic candidate. a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ? Select an answer ✓ (please enter a decimal) H₁: ? Select an answer ✓ (Please enter a decimal) (please show your answer to 3 decimal places.) c. The test statistic?v= d. The p-value = e. The p-value is ? ✓ a (Please show your answer to 4 decimal places.)
questions : "determine the null and alternative hypotheses" and the pnes below it.
In a study designed to test the "truth" to the theory that, on average, U.S. adults gain weight between Thanksgiving and January a research team looked at responses from 8 randomly selected U.S. adults. The subjects were weighed (lb) on the day before Thanksgiving and again on January 3rd The raw data are found in Table 1. Let ? = 0.025 Table 1: Weights (lb) before Thanksgiving and on Jan. 3rd for 8 U.S. adults Pre-Thanksgiving 168.2 173.5 164.3 166.4 167.6 164.9 172.1 169.8 Jan. 3rd 173.3 159.9 175.4 172.1 174.8 169.7 177.3 164.5 Diff 5.1 -13.6 11.1 5.7 7.2 4.8 5.2 -5.3
(b) The state of Wisconsin would like to understand the fraction of its adult residents that consumed alcohol in the last year, specifically if the rate is different from the national rate of 70%. To help them answer this question, they conduct a random sample of 852 residents and ask them about their alcohol consumption. In symbols, the hypotheses are: Ho: p = 596 Ha: p > 596 Но: р %3 0.70 На: р > 0.7 Ho: p = 596 На: # 596 Ho: p = 0.70 Ha: p z 0.70
13% of all Americans suffer from sleep apnea. A researcher suspects that a different percentage of those who live in the inner city have sleep apnea. Of the 390 people from the inner city surveyed, 70 of them suffered from sleep apnea. What can be concluded at the level of significance of a = 0.10? b. The null and alternative hypotheses would be: Ho: ? 8 Select an answer O |(please enter a decimal) H1: ? E Select an answer O (Please enter a decimal) c. The test statistic ? 6 (please show your answer to 3 decimal places.) d. The p-value = (Please show your answer to 4 decimal places.) e. The p-value is ? O a f. Based on this, we should Select an answer the null hypothesis.
In 2021 it was reported that 64% of adult Americans watch football regularly. You want to know if this percentage has increased since then. To do this you randomly sample 400 adults from across the United States. You ask all these adults, "Do you regularly watch football?" 268 of the adults respond that they do regularly watch football. Carry out the hypothesis test at alpha = 0.05 to test your claim. Please identify the followings A) null hypothesis B) alternative hypothesis C) test statistic D) critical value (s) E) p- value F) initial conclusion (reject null hypothesis or fail to reject null hypothesis) G) final conclusion regarding regarding to the given conclusion
You take 115 random samples from a population of trees for which the mean height in feet is μ=72μ=72 (but you do not know this), and use each set of data to do a hypothesis test at a 5% level of significance to determine if the population mean is not 72. So the hypotheses are:Ho:μ=72Ho:μ=72Ha:μ≠72Ha:μ≠72In how many of the 115 hypothesis tests would you expect to reject Ho and conclude that the population mean is not 72? Do not round your answer.
Is there an association between grade level and whether the student makes their bed in the morning? To investigate, the principal at a large high school selects a random sample of 84 students and classifies them as being in ninth, tenth, eleventh, or twelfth grade, and whether they make their bed. He would like to determine if there is convincing evidence of an association. Let a = 0.05. What are the hypotheses for this test? O Ho: There is no association between grade level and whether the student makes their bed in the morning. Hạ: There is an association between grade level and whether the student makes their bed in the morning. O Ho: There is an association between grade level and whether the student makes their bed in the morning. Hạ: There is no association between grade level and whether the student makes their bed in the morning. O Ho: There is a difference in the distribution of grade level and whether the student makes their bed in the morning. Hạ: There is no difference in…

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