Homework Answers
option D
as p value is not the requirement but the outcomes of the test , also we can check our hypothesis from level of significance)
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proportion Which of the following is NOT a requirement of testing a claim about a population Choose the correct ans...
Which of the following is NOT a requirement for testing a claim about a standard deviation...
Which of the following is NOT a requirement for testing a claim about a standard deviation or variance? O A. The chi-square distribution is used. O B. The population has a normal distribution. O C. The population must be skewed to the right. OD. The sample is a simple random sample.
You are testing a claim about a population proportion of 0.2. Find the test statistic given...
You are testing a claim about a population proportion of 0.2. Find the test statistic given the following sample results: successes: 70 sample size:225 Round to the fourth.
Diego is testing a claim about a population mean. The hypotheses are: Ho: u = 137...
Diego is testing a claim about a population mean. The hypotheses are: Ho: u = 137 H: 4 > 137 After taking a simple random sample of 58 subjects, he determines that the sample mean is 140. Diego then does some calculations and writes the following in his notebook: "If Ho were true, the chance that the sample mean would have come out as big (or bigger) than 0.17." What is the name given to the value of 0.17? o...
You wish to test the following claim ( H a ) at a significance level of...
You wish to test the following claim ( H a ) at a significance level of α = 0.01 . H o : p = 0.2 H a : p > 0.2 You obtain a sample of size n = 123 in which there are 35 successful observations. For this test, you should use the (cumulative) binomial distribution to obtain an exact p-value. (Do not use the normal distribution as an approximation for the binomial distribution.) The p-value for this...
Twelve different video games showing alcohol use were observed. The duration times of alcohol use were...
Twelve different video games showing alcohol use were observed. The duration times of alcohol use were recorded, with the times (seconds) listed below. What requirements must be satisfied to test the claim that the sample is from a population with a mean greater than 75 sec? Are the requirements all satisfied? 80, 13, 591, 46, 0, 55, 197, 46, 177, 0, 2, 52 What requirements must be satisfied? Select all that apply. A. Either the population is normally distributed, or...
Question: You are testing the claim that the proportion of men who own cats is larger...
Question: You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats.You sample 70 men, and 30% own cats.You sample 170 women, and 10% own cats. Find the proportion of the pooled samples, (p sub c), as a decimal, rounded to two decimal places. Question: You wish to test the following claim (Ha) at a significance level of α=0.002. Ho:p1=p2, Ha:p1≠p2 You obtain 344 successes in a sample...
Twelve different video games showing alcohol use were observed. The duration times of alcohol use were...
Twelve different video games showing alcohol use were observed. The duration times of alcohol use were recorded, with the times (seconds) listed below. What requirements must be satisfied to test the claim that the sample is from a population with a mean greater than 85 sec? Are the requirements all satisf ed? 90 15 621 50 0 56 215 43 186 0 2 60 O A. The conditions for a binomial distribution must be satisfied. B. Either the population is...
O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING Hypothesis test for a population proportion Lau A decade-old study...
O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING Hypothesis test for a population proportion Lau A decade-old study found that the proportion, p, of high school seniors who beleved that "getting rich" was an important personal goal was 70%. A researcher decides to test whether or not that percentage still stands. He finds that, among the 220 high school seniors in his random sample, 135 beleve that "getting rich" is an important goal. Can he conclude, at the 0.1 level of significance,...
One population proportion test: Which of the following situations involves testing a claim about a single...
One population proportion test: Which of the following situations involves testing a claim about a single population proportion? According to the College Board, which administers the SAT exam, the average score for females is lower than for males among graduating seniors in 2011. An educational researcher wants to test whether this is also true in her school district. A recent study estimated that 20% o al college students in the United States smoke. The head of Health Services at Goodheart...
Example - Testing a claim (hypothesis test) for a single population proportion Example A sample of...
Example - Testing a claim (hypothesis test) for a single population proportion Example A sample of 1201 Mt SAC students found that 52.2% passes Beginning Alba. Test the claim at 5% significance that the success rate is lower than the overall success rate in mathematics at Mt SAC, which is 54.2% (Before you work this problem, ask yourself, "Why is this a proportion problem? 'ns 1201
Which of the following is NOT a requirement for testing a claim about a standard deviation or variance? O A. The chi-square distribution is used. O B. The population has a normal distribution. O C. The population must be skewed to the right. OD. The sample is a simple random sample.
Diego is testing a claim about a population mean. The hypotheses are: Ho: u = 137 H: 4 > 137 After taking a simple random sample of 58 subjects, he determines that the sample mean is 140. Diego then does some calculations and writes the following in his notebook: "If Ho were true, the chance that the sample mean would have come out as big (or bigger) than 0.17." What is the name given to the value of 0.17? o...
Twelve different video games showing alcohol use were observed. The duration times of alcohol use were recorded, with the times (seconds) listed below. What requirements must be satisfied to test the claim that the sample is from a population with a mean greater than 85 sec? Are the requirements all satisf ed? 90 15 621 50 0 56 215 43 186 0 2 60 O A. The conditions for a binomial distribution must be satisfied. B. Either the population is...
O CONFIDENCE INTERVALS AND HYPOTHESIS TESTING Hypothesis test for a population proportion Lau A decade-old study found that the proportion, p, of high school seniors who beleved that "getting rich" was an important personal goal was 70%. A researcher decides to test whether or not that percentage still stands. He finds that, among the 220 high school seniors in his random sample, 135 beleve that "getting rich" is an important goal. Can he conclude, at the 0.1 level of significance,...
One population proportion test: Which of the following situations involves testing a claim about a single population proportion? According to the College Board, which administers the SAT exam, the average score for females is lower than for males among graduating seniors in 2011. An educational researcher wants to test whether this is also true in her school district. A recent study estimated that 20% o al college students in the United States smoke. The head of Health Services at Goodheart...
Example - Testing a claim (hypothesis test) for a single population proportion Example A sample of 1201 Mt SAC students found that 52.2% passes Beginning Alba. Test the claim at 5% significance that the success rate is lower than the overall success rate in mathematics at Mt SAC, which is 54.2% (Before you work this problem, ask yourself, "Why is this a proportion problem? 'ns 1201
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