In December 2004, 43% of students in high school were satisfied with the lunches supplied through...

Transcribed Image Text:

In December 2004, 43% of students in high school were satisfied with the lunches supplied through the school. In May 2010, an organization conducted a poll of 1024 students in high school and asked if they were satisfied with the lunches supplied through the school. Of the 1024 surveyed, 389 indicated they were satisfied. Does this suggest the proportion of students satisfied with the quality of lunches has decreased? (a) What does it mean to make a Type I error for this test? of the test? (b) If the researcher decides to test this hypothesis at the a-0.10 level of significance, compute the probability of making a Type Il error, p. if the true population proportion is 0.38. What is the power (c) Redo part (b) if the true population proportion is 0.42 (a) What does it mean to make a Type II error for this test? Choose the correct answer below OA. He is rejected and the true proportion of high school students who are not satisfied with the quality of lunches is less than 0.43 BH is not rejected and the true proportion of high school students who are not satisfied with the quality of lunches is less than 0.43 OC. He is not rejected and the true proportion of high school students who are not satisfied with the quality of lunches is equal to 0.43. (b) If the researcher decides to test this hypothesis at the a 0.10 level of significance, compute the probability of making a Type I error, B. If the true population proportion is 0.38. What is the power of the test? Power (Type integers or decimals rounded to four decimal places as needed) In December 2004, 43% of students in high school were satisfied with the lunches supplied through the school. In May 2010, an organization conducted a poll of 1024 students in high school and asked if they were satisfied with the lunches supplied through the school. Of the 1024 surveyed, 389 indicated they were satisfied. Does this suggest the proportion of students satisfied with the quality of lunches has decreased? (a) What does it mean to make a Type I error for this test? of the test? (b) If the researcher decides to test this hypothesis at the a-0.10 level of significance, compute the probability of making a Type Il error, p. if the true population proportion is 0.38. What is the power (c) Redo part (b) if the true population proportion is 0.42 (a) What does it mean to make a Type II error for this test? Choose the correct answer below OA. He is rejected and the true proportion of high school students who are not satisfied with the quality of lunches is less than 0.43 BH is not rejected and the true proportion of high school students who are not satisfied with the quality of lunches is less than 0.43 OC. He is not rejected and the true proportion of high school students who are not satisfied with the quality of lunches is equal to 0.43. (b) If the researcher decides to test this hypothesis at the a 0.10 level of significance, compute the probability of making a Type I error, B. If the true population proportion is 0.38. What is the power of the test? Power (Type integers or decimals rounded to four decimal places as needed)