Homework Answers
In this case null hypothesis is "The food is safe"
The sample suggested that Food is safe but it is actually not
So,this means that we failed to reject a false null hypothesis
Hence it is a type II error
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Question 1 of 6 Points: 10 Food inspectors inspect samples of food products to see if...
Food inspectors inspect samples of food products to see if they are safe. This can be...
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. Ho: the food is safe Hq: 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 Otype II O not an error
Food inspectors inspect samples of food products to see if they are safe. This can be...
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. H0: 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. type I type II not an error
13. [6 points] Suppose that when one of our beloved local food delivery robots approaches an...
13. [6 points] Suppose that when one of our beloved local food delivery robots approaches an intersection, it performs a hypothesis test with the hypotheses Ho: It is not safe to cross the street H: It is safe to cross the street a) Briefly describe the consequences of a Type 1 Error in this situation. b) Briefly describe the consequences of a Type II Error in this situation. c) Based on your previous answers, which of the below is the...
Question 12 (4.2 points) A test is made of Ho: mean = 71 versus Hy: mean...
Question 12 (4.2 points) A test is made of Ho: mean = 71 versus Hy: mean < 71. The true value of the mean is 35, and Ho is not rejected. Is this a Type 1 error, Type II error, or a correct decision? Type II error Type I error Correct decision Question 13 (4.2 points) Consider the following hypotheses: Ho: mean = 7 Hi: mean = 7 A test is performed with a sample of size 36. The sample...
Questions points Answer the following questions: An entrepreneurial scientist has invented a supplement that she believes...
Questions points Answer the following questions: An entrepreneurial scientist has invented a supplement that she believes can enhance short-term memory. She conducts an experiment to test the effect of the supplement on 23 volunteers, 12 of whom are given a placebo and 11 of whom are given the supplement. In analyzing in her study, she obtains a p-value of 0.19. Which of the following is a reasonable interpretation of her results This proves that at most 19% of the time,...
A production line operation is tested for filling weight accuracy using the following hypotheses. Hypothesis Ho:...
A production line operation is tested for filling weight accuracy using the following hypotheses. Hypothesis Ho: 1 = 16 Hai + 16 conclusion and Action Filling okay, keep running Filling off standard; stop and adjust machine The sample size is 32 and the population standard deviation is o = 0.9. Use a = .05. Do not round intermediate calculations. a. What would a Type II error mean in this situation? Concluding that the mean filling weight is 16 ounces when...
Question 6 Select one answer. The Food and Drug Administration (FDA) is a U.S. government agency...
Question 6 Select one answer. The Food and Drug Administration (FDA) is a U.S. government agency that regulates (you guessed it) food and drugs for consumer safety. One thing the 10 points FDA regulates is the allowable insect parts in various foods. You may be surprised to know that much of the processed food we eat contains insect parts. An example is flour. When wheat is ground into flour, insects that were in the wheat are ground up as well....
Question 6 Select one answer The Food and Drug Administration (FDA) is a U.S. government agency...
Question 6 Select one answer The Food and Drug Administration (FDA) is a U.S. government agency that 10 points regulates (you guessed it) food and drugs for consumer safety. One thing the FDA regulates is the allowable insect parts in various foods. You may be surprised to know that much of the processed food we eat contains insect parts. An example is flour. When wheat is ground into flour, insects that were in the wheat are ground up as well....
Bonus (5 points) Suppose that you are testing the following hypotheses: Ho: 4 = 10 and...
Bonus (5 points) Suppose that you are testing the following hypotheses: Ho: 4 = 10 and H :> 10. If the null hypothesis is rejected at the 1% level of significance, what statement can you make about the confidence interval on the mean? a) The lower bound of a 95% one-sided confidence interval on the mean exceeds 10. b) 9 <u< 13 c) No statement can be made. d) The lower bound of a 95% one-sided confidence interval on the...
This Question: 1 pt Question Help samples are drewn from two different populations. The frst sample...
This Question: 1 pt Question Help samples are drewn from two different populations. The frst sample consists of 30 people with 15 having a common attribute. The Two different simple random samples are drawn from two dift second sample consists of 2000 people with 1416 of them having the same common attribute. Compare the reaul significance level) and a 95% confidence interval estimate of pi-p2 What are the null and alternative hypotheses for the hypothesis test? H1 P1 P2 Identify...
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. Ho: the food is safe Hq: 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 Otype II O not an error
13. [6 points] Suppose that when one of our beloved local food delivery robots approaches an intersection, it performs a hypothesis test with the hypotheses Ho: It is not safe to cross the street H: It is safe to cross the street a) Briefly describe the consequences of a Type 1 Error in this situation. b) Briefly describe the consequences of a Type II Error in this situation. c) Based on your previous answers, which of the below is the...
Question 12 (4.2 points) A test is made of Ho: mean = 71 versus Hy: mean < 71. The true value of the mean is 35, and Ho is not rejected. Is this a Type 1 error, Type II error, or a correct decision? Type II error Type I error Correct decision Question 13 (4.2 points) Consider the following hypotheses: Ho: mean = 7 Hi: mean = 7 A test is performed with a sample of size 36. The sample...
Questions points Answer the following questions: An entrepreneurial scientist has invented a supplement that she believes can enhance short-term memory. She conducts an experiment to test the effect of the supplement on 23 volunteers, 12 of whom are given a placebo and 11 of whom are given the supplement. In analyzing in her study, she obtains a p-value of 0.19. Which of the following is a reasonable interpretation of her results This proves that at most 19% of the time,...
A production line operation is tested for filling weight accuracy using the following hypotheses. Hypothesis Ho: 1 = 16 Hai + 16 conclusion and Action Filling okay, keep running Filling off standard; stop and adjust machine The sample size is 32 and the population standard deviation is o = 0.9. Use a = .05. Do not round intermediate calculations. a. What would a Type II error mean in this situation? Concluding that the mean filling weight is 16 ounces when...
Question 6 Select one answer. The Food and Drug Administration (FDA) is a U.S. government agency that regulates (you guessed it) food and drugs for consumer safety. One thing the 10 points FDA regulates is the allowable insect parts in various foods. You may be surprised to know that much of the processed food we eat contains insect parts. An example is flour. When wheat is ground into flour, insects that were in the wheat are ground up as well....
Question 6 Select one answer The Food and Drug Administration (FDA) is a U.S. government agency that 10 points regulates (you guessed it) food and drugs for consumer safety. One thing the FDA regulates is the allowable insect parts in various foods. You may be surprised to know that much of the processed food we eat contains insect parts. An example is flour. When wheat is ground into flour, insects that were in the wheat are ground up as well....
Bonus (5 points) Suppose that you are testing the following hypotheses: Ho: 4 = 10 and H :> 10. If the null hypothesis is rejected at the 1% level of significance, what statement can you make about the confidence interval on the mean? a) The lower bound of a 95% one-sided confidence interval on the mean exceeds 10. b) 9 <u< 13 c) No statement can be made. d) The lower bound of a 95% one-sided confidence interval on the...
This Question: 1 pt Question Help samples are drewn from two different populations. The frst sample consists of 30 people with 15 having a common attribute. The Two different simple random samples are drawn from two dift second sample consists of 2000 people with 1416 of them having the same common attribute. Compare the reaul significance level) and a 95% confidence interval estimate of pi-p2 What are the null and alternative hypotheses for the hypothesis test? H1 P1 P2 Identify...
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