ty--And, Conditional Due Tue 04/21/2020 7:00 a Show Intro/Instruction An assessment consists of a multiple-choice question with 6 possible answers followed by a multiple-choice question with 6 possible answers. If both questions are answered with random guesses, find the probability that both responses are correct. Report the answer as a percent rounded to one decimal place accuracy. You need not enter the "%" symbol. prob =
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- White Rock is trying to determine an acceptance sampling plan for parts Y500 and P2000, both of which are purchased from suppliers . For part P2000, management would like to be 95% sure of rejecting shipments that have more than 3% defectives, but wants to accept shipments with less than 1% defectives 90% of the time. Answer each of the following questions. For each question, use at least four decimal places when doing your calculations, but then ROUND OFF your answer to the number of decimal places specified for each question. What is the implied AQL for part P2000 based on the information given (round to 2 decimal places) ? What is the implied LTPD for part P2000 based on the information given (round to 2 decimal places) ? What is the implied probability of a Type II error for part P2000 based on the information given(round to 2 decimal places) ?A study found that 13% of Americans have seen or sensed the presence of an angel. A contingent doubts that the percent is really that high. It conducts its own survey. Out of 76 Americans surveyed, only two had seen or sensed the presence of an angel. As a result of the contingent's survey, would you agree with the study? What is the p-value?The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level. Step 1 of 2: Suppose a sample of 2845 tenth graders is drawn. Of the students sampled, 2276 read above the eighth grade level. Using the data, estimate the proportion of tenth graders reading at or below the eighth grade level. Enter your answer as a fraction or a decimal number rounded to three decimal places.
- Miller Junior High is considering changing its school colors. The results of a survey that 16 out of 36 students are in favor of the change. Which is the best prediction for the number of student in the entire student bod of 1,800 students who are in favor of the change?A recent survey found that in a sample of 150 families, 46 owned dogs. A survey done 15 years ago found in a sample of 120 families, 32 owned dogs. Is there evidence, using a = .05, that the proportion of families that own dogs has changed over this time period? a.) Should the null hypothesis be rejected? Yes or No; Explain how you made this decision. b.) Write a sentence summarizing, in the context of this question, your result. What does your conclusion imply the proportion, over this 15 year period, of families that own dogs?A survey was conducted to determine the percentage of college freshmen that planned to take a math course while in college. The results were given as 75% with a margin of error of +/- 4%. What does the margin of error of +/- 4% mean? 4% of the students surveyed will most likely change their minds. The difference between the sample proportion and the population proportion is likely to be less than 4%. 4% of the students surveyed refused to participate in the poll. The percentage of the population that was surveyed was between 71% and 79%. 4% of the population was not included in the survey.
- Camille believes that 50% of first-time brides in the United States are younger than their grooms. She performs a hypothesis test to determine if the percentage is the same or different from 50%. Camille samples 100 first-time brides and 53 reply that they are younger than their grooms. For the hypothesis test, she uses a 3% level of significance.Fear of the dark is quite common among children. However, what about adults? One polling agency released the results of a survey that asked people over 30 years old if they keep the lights on at night. Among 452respondents, 34% indeed leave the light on when going to sleep. Calculate the margin of error for this survey. Round the percentage to one decimal place. Do not round intermediate steps. If 34% of 452 respondents keep the lights on at night, the margin of error is %.Fear of the dark is quite common among children. However, what about adults? One polling agency released the results of a survey that asked people over 30 years old if they keep the lights on at night. Among 452 respondents, 34% indeed leave the light on when going to sleep. What does this margin of error tell you about the percentage of adults who keep the lights on at night? We can be 95% confident that somewhere between % and % of adults keep the lights on at night.
- In a survey of 1009 parents of children ages 8-14, 74% say they are willing to get a second or part-time job to pay for their children's college education and 39% say they lose sleep worrying about college costs. The survey's margin of error is ±2%.The state education commission wants to estimate the fraction of tenth grade students that have reading skills at or below the eighth grade level. Step 1 of 2: Suppose a sample of 333 tenth graders is drawn. Of the students sampled, 260 read above the eighth grade level. Using the data, estimate the proportion of tenth graders reading at or below the eighth grade level. Enter your answer as a fraction or a decimal number rounded to three decimal places. Step 2 of 2: Suppose a sample of 333 tenth graders is drawn. Of the students sampled, 260 read above the eighth grade level. Using the data, construct the 80% confidence interval for the population proportion of tenth graders reading at or below the eighth grade level. Round your answers to three decimal places.The state education commission wants to estimate the fraction of tenth-grade students that have reading skills at or below the eighth-grade level. Step 1 of 2 : Suppose a sample of 1134 tenth graders is drawn. Of the students sampled, 226 read at or below the eighth-grade level. Using the data, estimate the proportion of tenth graders reading at or below the eighth-grade level. Enter your answer as a fraction or a decimal number rounded to three decimal places.
