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null hyptohesis is defined as the assumption of no effect or no relationship between variables
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Question 4 0.8 pts Suppose you are hired by a firm to determine what proportion of...
Would you favor spending more federal tax money on the arts? Of a random sample of...
Would you favor spending more federal tax money on the arts? Of a random sample of n = 93 politically conservative voters, 1 = 17 responded yes. Another random sample of n2 = 78 politically moderate voters showed that r2 - 22 responded yes. Does this information indicate that the population proportion of conservative voters inclined to spend more federal tax money on funding the arts is less than the proportion of moderate voters so inclined? Use a = 0.05....
You are conducting a study to see if the proportion of voters who prefer the Democratic...
You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 51% at a level of significance of a -0.01. According to your sample, 37 out of 74 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: ? ? please enter a decimal) (Please enter a decimal) c. The test statistic (please show your...
Provide an appropriate response. Suppose that you perform a two-proportion z-test and reject the null hypothesis...
Provide an appropriate response. Suppose that you perform a two-proportion z-test and reject the null hypothesis that there is no difference in the two proportions. If that conclusion is actually wrong, which type of error did you commit? No error was committed. The conclusion is correct. Type 1 Error Type II Error
QUESTION 21 A p value is the probability of obtaining the value of the test statistic...
QUESTION 21 A p value is the probability of obtaining the value of the test statistic or more extreme, if the null hypothesis is true. a. True b. False QUESTION 18 Type I error occurs when a. you reject a false null hypothesis b. you reject a true null hypothesis c. you fail to reject a false null hypothesis d. you fail to reject a true null hypothesis QUESTION 19 Type II error occurs when a. you reject a false...
Question 29 1 pts If a test of hypothesis is conducted at a 0.05 level of...
Question 29 1 pts If a test of hypothesis is conducted at a 0.05 level of significance and the p-value resulting from the analysis is 0.092. The conclusion is: Reject the null hypothesis Fail to reject the null hypothesis Reject the alternative hypothesis Question 30 1 pts If a test of hypothesis is conducted at a 0.05 level of significance and the p-value resulting from the analysis is 0.092. The potential type of statistical error is: Type Il error Type...
1.) Assume that a sample is used to estimate a population proportion p. Find the margin...
1.) Assume that a sample is used to estimate a population proportion p. Find the margin of error m that corresponds to the given statistics and confidence level. Round the margin of error to four decimal places. 95% confidence; n = 380, x = 50 Group of answer choices 0.0340 0.0408 0.0306 0.0357 2.) Formulate the indicated conclusion in nontechnical terms. Be sure to address the original claim. A researcher claims that 62% of voters favor gun control. Assuming that...
Do you prefer paintings in which the people are fully clothed? This question was asked by...
Do you prefer paintings in which the people are fully clothed? This question was asked by a professional survey group on behalf of a national arts organization. A random sample of n1 = 56 people who are conservative voters showed that r1 = 43 said yes. Another random sample of n2 = 65 people who are liberal voters showed that r2 = 37 said yes. Does this indicate that the population proportion of conservative voters who prefer art with fully...
A news article that you read stated that 51% of voters prefer the Democratic candidate. You...
A news article that you read stated that 51% of voters prefer the Democratic candidate. You think that the actual percent is smaller. 127 of the 260 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.01 level of significance? a). For this study, we should use _____________ b). The null and alternative hypotheses would be: Ho: (please enter a decimal) H1: (Please enter a decimal) c). The test statistic = (please...
Question 21 (4 points) For a hypothesis test about a population proportion or mean, if the...
Question 21 (4 points) For a hypothesis test about a population proportion or mean, if the level of significance is less than the p- value, the null hypothesis is rejected. (Ch10) True False Question 22 (4 points) Everything else being constant, increasing the sample size decreases the probability of committing a Type II error. (Ch10) True False The power of a statistical test is the probability of not rejecting the null hypothesis when it is true. (Ch10) True False Question...
il Boost 7:49 PM Exit Question 5 5 pts Use the given data to find the...
il Boost 7:49 PM Exit Question 5 5 pts Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.018; confidence level: 99%;p and unknown 4966 04114 7116 O 5117 ..l Boost 7:49 PM Exit Express the null hypothesis and the alternative hypothesis in symbolic form for a test to support this claim. Use the correct symbol q,p, a) for the indicated parameter. An entomologist writes an article in a scientific...
Would you favor spending more federal tax money on the arts? Of a random sample of n = 93 politically conservative voters, 1 = 17 responded yes. Another random sample of n2 = 78 politically moderate voters showed that r2 - 22 responded yes. Does this information indicate that the population proportion of conservative voters inclined to spend more federal tax money on funding the arts is less than the proportion of moderate voters so inclined? Use a = 0.05....
You are conducting a study to see if the proportion of voters who prefer the Democratic candidate is significantly different from 51% at a level of significance of a -0.01. According to your sample, 37 out of 74 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: ? ? please enter a decimal) (Please enter a decimal) c. The test statistic (please show your...
Provide an appropriate response. Suppose that you perform a two-proportion z-test and reject the null hypothesis that there is no difference in the two proportions. If that conclusion is actually wrong, which type of error did you commit? No error was committed. The conclusion is correct. Type 1 Error Type II Error
Question 29 1 pts If a test of hypothesis is conducted at a 0.05 level of significance and the p-value resulting from the analysis is 0.092. The conclusion is: Reject the null hypothesis Fail to reject the null hypothesis Reject the alternative hypothesis Question 30 1 pts If a test of hypothesis is conducted at a 0.05 level of significance and the p-value resulting from the analysis is 0.092. The potential type of statistical error is: Type Il error Type...
Question 21 (4 points) For a hypothesis test about a population proportion or mean, if the level of significance is less than the p- value, the null hypothesis is rejected. (Ch10) True False Question 22 (4 points) Everything else being constant, increasing the sample size decreases the probability of committing a Type II error. (Ch10) True False The power of a statistical test is the probability of not rejecting the null hypothesis when it is true. (Ch10) True False Question...
il Boost 7:49 PM Exit Question 5 5 pts Use the given data to find the minimum sample size required to estimate the population proportion. Margin of error: 0.018; confidence level: 99%;p and unknown 4966 04114 7116 O 5117 ..l Boost 7:49 PM Exit Express the null hypothesis and the alternative hypothesis in symbolic form for a test to support this claim. Use the correct symbol q,p, a) for the indicated parameter. An entomologist writes an article in a scientific...
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