The Department of Health plans to test the lead level in a specific park.Because a high lead level is harmful to children, the park will be closed if thelead level exceeds the allowed limit. The department randomly selects severallocations in the park, gets soil samples from those locations, and tests thesamples for their lead levels.Write the correct null hypothesis (H_O) for this problem. *Your answerWrite the correct alternative hypothesis for this problem. *Your answerWhich of the following decisions would result from the Type I error? *None of theseKeeping the park open when the lead levels are in excess of the allowed limit.Closing the park when the lead levels are in excess of the allowed limitClosing the park because of the increased noise level in the neighborhoodKeeping the park open when the lead levels are within the allowed limit

To find: 1. Null hypothesis 2. Alternative hypothesis 3. Type I error

Answered: The Department of Health plans to test…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Please show your complete solution. Thank you! Please use Excel if possible. Problem: A sample of 800 items produced on a new machine showed that 48 of them are defective. The factory will get rid the machine if the data indicates that the proportion of defective items is significantly more than 5%. At a significance level of 5%, is there enough evidence to get rid of the machine? The following steps should be indicated in your answer: Null and Alternative Hypothesis (both in symbols and statement form) Level of Significance; sample size; test statistics Decision Rule Computation Decision and Conclusion
Suppose you want to test the claim that a population mean equals 38. State the null hypothesis.
Traditionally in hypothesis testing, the null hypothesis represents the "status quo" which will be overturned only if there is evidence against it. Which of the statements below might represent a null hypothesis? 1. the treatment increase survival rates 2.the teaching method raises SAT score 3. the teaching method does not chang SAT score
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PART d e
oli.cmu.edu/course/a2/rest/assessement/deliver?attempt=1&context=7e118d530a0001dc243d5eafc726f6eb Countdown: Days:-0 Time:-12:02:41 10 points Researchers created a new fertilizer. They conducted an experiment to compare the new fertilizer to the old fertilizer. They divided tomato plants into two groups. They applied the new fertilizer to one group and the old fertilizer to another group. The variable is the number of tomatoes per plant on a randomly selected day. 0 0 Old Fertilizer N=65 2 4 New Fertilizer N=58 4 6 6 20 600 8 8 10 10 12 14 16 12 14 Number of tomatoes per plant 18 16 18 20 20 Select one answer. Which one of the following statements is valid? A. O The new formula of fertilizer works better. Plants with the new fertilizer had more tomatoes. B. O The old formula of fertilizer was better because the plant with the most tomatoes was treated with the old fertilizer. The average number of tomatoes per plant with the old fertilizer is higher than the average amount of tomatoes…
Which ONE of the following equations forms the basis of the One-way Anova calculations? between-groups sum of squares plus within-groups sum of squares = total sum of squares between-groups sum of squares divided by within-groups sum of squares = total sum of squares within-groups sum of squares divided by between-groups sum of squares = F-statistic between-groups sum of squares plus within-groups sum of squares = F-statistic The Anova procedure will be appropriate if certain conditions hold. One of those conditions is that the population variances should be the same. sample variances should be different from each other. population means should be the same. Below is some info about a certain One-way Anova F-test. Identify the null hypothesis, alternative hypothesis and final conclusion by choosing the BEST option for each blank. Categorical Variable: type of meat being cooked (all pieces of meat are cut into one-inch cubes)…
A concerned consumer believes that they are being cheated in the weight of potato chips per bag. The company claims that every small bag weighs 1 ounce. You weigh 50 different bags of chips and find the average to be .97 ounces. Match the following terms to their meaning in context of this problem. The consumer finds a test result that is NOT statistically significant What is their conclusion?
For each scenario listed on the left, determine whether the scenario represents an Indepenent Samples or Matched pairs situation by placing the appropriate letter in the box provided. -ab Comparing the number of speeding tickets received by men to the number received by women -ab Comparing pain levels before and after treatment with magnetic therapy -ab Comparing pre-test scores before training to post-test scores -ab Comparing pain levels of a group receiving a placebo to a group receiving a medicine Matched Pairs Independent Samples
Describe the type I error and the type II error for a hypothesis tests of the given claim. The proportion of settled medical malpractice suits is 0.22. Which of the following is a type I error? A. Reject the claim that the proportion of settled malpractice suits is 0.22 when the proportion is actually different from 0.22. O B. Fail to reject the claim that the proportion of settled malpractice suits is 0.22 when the proportion is actually different from 0.22. C. Fail to reject the claim that the proportion of settled malpractice suits is 0.22 when the proportion is actually 0.22. O D. Reject the claim that the proportion of settled malpractice suits is 0.22 when the proportion is actually 0.22. Which of the following is a type II error? O A. Reject the claim that the proportion of settled malpractice suits is 0.22 when the proportion is actually different from 0.22. O B. Reject the claim that the proportion of settled malpractice suits is 0.22 when the proportion is actually 0.22. O C.…
What is H0? And why do we evaluate it instead of the scientific hypothesis?

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