Food inspectors inspect samples of food products to see if they are safe. This can be thought of as a hypothesis test with the following hypotheses. Họ: the food is safe Ha: the food is not safe The following is an example of what type of error? The sample suggests that the food is safe, but it actually is not safe. O type I O type II O not an error > Next Question

Food inspectors inspect samples of food products to see if they are safe. This can be thought of as a hypothesis test with the following hypotheses. Họ: the food is safe Ha: the food is not safe The following is an example of what type of error? The sample suggests that the food is safe, but it actually is not safe. O type I O type II O not an error > Next Question

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Identify the test statistic for this hypothesis test. The test statistic fc O A. -1.75 O B. -1.27 O C. -0.76 O D. -1.59
Food inspectors inspect samples of food products to see if they are safe. This can be thought of as a hypothesis test where Ho: the food is safe, and H1: the food is not safe. If you are a consumer, which type of error would be the worst one for the inspector to make, the type I or type Il error?
The standard error for is equal to 0.113. The test statistic for the hypothesis test specified in question 9 is equal to:
Regarding the power of a hypothesis test: a. What does it represent?b. Whathappens to the power of a hypothesis test if the significance level is kept at 0.01 while the sample size is increased from 50 to 100?
in this exercise, we are conducting many hypothesis tests to test a claim. assume that the null hypothesis is true. if 1100 tests are conducted using a significance level of 5. approximately how many of the tests will incorrectly significance
st 3 4 25 26 27 28 on 29 K Test the given claim. Identify the null hypothesis, alternative hypothesis, test statistic, P-value, and then state the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Among 2073 passenger cars in a particular region, 222 had only rear license plates. Among 339 commercial trucks, 51 had only rear license plates. A reasonable hypothesis is that commercial trucks owners violate laws requiring front license plates at a higher rate than owners of passenger cars. Use a 0.10 significance level to test that hypothesis. a. Test the claim using a hypothesis test. b. Test the claim by constructing an appropriate confidence interval. a. Identify the null and alternative hypotheses for this test. Let population 1 correspond to the passenger cars and population 2 correspond to the commercial trucks. Let a success be a vehicle that only has a rear license plate. O A. Ho: P₁ = P2 H₁: P₁ P2 OB. Ho: P₁ P2 H₁: P₁ P2 OC.…
A public opinion poll surveyed a simple random sample of voters. Respondents were classified by gender (female or male) and by voting preference (Republican, Democrat, or Independent). The results are presented here: Republican 250 200 Female Male You want to determine if gender and voting preference are independent. Use a level of significance of a = 0.05. Are the requirements met for this hypothesis test? Explain. O Yes. A random sample was used, and all expected counts are greater than or equal to 5. O Yes. A random sample was used, and all observed counts are greater than or equal to 5. O No. A random sample was used, but at least one of the expected counts is less than 5. O No. A random sample was not used. Democrat 300 150 Independent 50 50
A six-sided die is rolled 120 times. Fill in the expected frequency column. Then, conduct a hypothesis test to determine if the die is fair using 5% significant level. The data in the following table are the result of the 120 rolls. Face Value Frequency Expected Frequency 1 15 2 29 3 16 4 15 5 30 6 15 What are the null and alternate hypotheses?
A study conducted among college students looked at the influence of religiosity (high, medium, or low) on anger frequency (never, sometimes, or often) in the last month. The responses of randomly selected college students at a large school in the United States are shown in the following table. Anger Frequency Never Sometimes Often High 214 What is the correct conclusion for this hypothesis test? 145 29 Medium 129 61 18 Low 60 55 27 You want to determine if anger frequency and religiosity are independent. Use a level of significance of a = 0.10. O As the P-value is less than a, we reject the null hypothesis. Thus, there is sufficient evidence to conclude that anger frequency and religiosity are not independent. O As the P-value is less than a, we reject the null hypothesis. Thus, there is insufficient evidence to conclude that anger frequency and religiosity are not independent. O As the P-value is less than a, we fail to reject the null hypothesis. Thus, there is sufficient evidence to…
What does the p-value represent in a test of hypothesis? The p-value represents the significance level of the hypothesis test. The p-value is the probability that the sample data occurred given that the null hypothesis is true. The p-value is the probability that the sample data occurred given that the alternative hypothesis is true. The p-value is the probability that the null hypothesis is true.
PART d e
A news article that you read stated that 59% of voters prefer the Democratic candidate. You think that the actual percent is different. 120 of the 236 voters that you surveyed said that they prefer the Democratic candidate. What can be concluded at the 0.05 level of significance? a. For this study, we should use Select an answer b. The null and alternative hypotheses would be: Ho: ?Select an answerv (please enter a decimal) H.:?Select an answerv (Please enter a decimal) c. The test statistic ?V = (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 ?va f. Based on this, we should Select an answerv the null hypothesis. g. Thus, the final conclusion is that ... O The data suggest the population proportion is not significantly different 59% at a = 0.05, so there is not sufficient evidence to conclude that the proportion of voters who prefer the Democratic candidate is different 59%. O The data suggest the…