25. An experimenter has prepared a drug that he claims has side effects in 25% or less of those people taking it (considerably less than the current medication). In an attempt to verify the claim his prescribed drug was administered to 24 patients & Y, the # of patients having side effects by drug, was observed. If at most 9 patients have side effects with this drug the claim is accepted ( valid). Find P (Type II Error) when p = 0.75 O 0.000112 O 0.000523 O 0.595599 O None of the other answers are correct. O 0.999888 0.999477

25. An experimenter has prepared a drug that he claims has side effects in 25% or less of those people taking it (considerably less than the current medication). In an attempt to verify the claim his prescribed drug was administered to 24 patients & Y, the # of patients having side effects by drug, was observed. If at most 9 patients have side effects with this drug the claim is accepted ( valid). Find P (Type II Error) when p = 0.75 O 0.000112 O 0.000523 O 0.595599 O None of the other answers are correct. O 0.999888 0.999477

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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16.
Researchers wanted to know if therapy could help smokers quit smoking. Of the 71 smokers they tested, 39 were smoking one year after treatment. Use a 0.05 significance level to test the claim that the majority are smoking one year after treatment. What is/are the critical value(s)? ттT Arial 3 (12pt) v TE -E · -
18. A researcher investigates the effects of 5 levels of frustration (Factor A) and low vs high amounts of sleep deprivation (Factor B) on depression scores. There were 5 participants per group, and she obtained the following SS. SS df MS F Source Between groups Factor A Factor B Interaction Within groups 109.25 Total 22.69 46.02 6.13 184.09 х a. Complete the ANOVA summary table with df, MS, F's. CV = b. Using the .05 level find critical F values for Factor A: df = CV = for Factor B: df = and for AxB Interaction: df = CV = c. Determine which of the 3 effects tested are significant. List the results: A sig? B sig? AXB Int sig? d. Compute effect size (eta-sq) for each significant factor found and include them in your conclusion. e. Write a conclusion - a sentence or 2 - to report the significance and the APA stats. As always, mention the IV and DV in the conclusion and don't mention "reject the null" or the critical values. K=5 level of frustration, n=5 participants per group, N=K*n=…
True or False
After conducting an ANOVA, you end up with the following results: F(2, 27) = 8.80, p < .05. How many groups were included in your analysis? Enter your answer as a whole number with no decimal places (i.e., 10, not 10.01, not 10.1, not 10.001).
8. A certain drug can be used to reduce the acid produced by the body and heal damage to the esophagus due to acid reflux. The manufacturer of the drug claims that more than 95% of patients taking the drug are healed within 8 weeks. In clinical trials, 216 of 225 patients suffering from acid reflux disease were healed after 8 weeks. Test the manufacturer's claim at the a = 0.1 level of significance. Because npo (1- Po) (1) 10, the sample size is (2) 5% of the %D population size, and the sample (3) satisfied. the requirements for testing the hypothesis (4) (Round to one decimal place as needed.) What are the null and alternative hypotheses? Но: (5) (6) versus H1: (7) (8) (Type integers or decimals. Do not round.) Find the test statistic, zo. Zo = (Round to two decimal places as needed.) Find the P-value. P-value = (Round to three decimal places as needed.) Choose the correct conclusion below. O A. Do not reject the null hypothesis. There is sufficient evidence to conclude more than 95%…
Show all your work Indicate clearly the methods you use, because you will be scored on the correctness of your methods as well as on the accuracy and completeness of your results and explanations. Researchers are studying two populations of sea turtles, In population D. 30 percent of the turties have a shell length greater than 2 feet. In population E. 20 percent of the turtles have a shell length greater than 2 feet. Froma random sample of 40 turtes selected from D.15 had a shell length greater than 2 feet. From a random sample of 60 turtles selected fromE. 11 had a shell length greater than 2 feet. Let pry represent the sample proportion for D, and let p represent the sample proportion for E (a)What is the value of the difference pryPr?Show your work. (b) What are the mean and standard deviation of the sampling distribution of the difference in sample proportions p P:? Show your work and label each value. (c) Can it be assumed that the sampling distribution of the difference of the…
Regulations from the Environmental Protection Agency say that soil used in play areas should not have lead levels that exceed a 400 parts per million (ppm). Before beginning construction at a new site, an agent will take a sample of soil and run a significance test on the mean lead level in the soil. If the mean lead level in the sample is significantly higher than 400 ppm, then the soil is deemed unsafe and construction cannot continue. Here are the hypotheses for this test: Ho : µ 400 ppm (soil is unsafe) (where u is the mean lead level in the soil at the new site). Which of the following would be a Type I error in this setting? Choose 1 answer: The soil is actually safe, and the sample result is below 400 ppm. so construction continues. The soil is actually safe, and the sample result is significantly higher than 400 ppm. so construction stops. The soil is actually unsafe, and the sample result is below 400 ppm, so construction continues. The soil is actually unsafe, and the sample…
Are couples that live together before they get married less likely to end up divorced within five years of marriage compared to couples that live apart before they get married? 212 of the 696 couples from the study who lived together before they got married were divorced within five years of marriage. 167 of the 447 couples from the study who lived apart before they got married were divorced within five years of marriage. What can be concluded at the = 0.05 level of significance? The test statistic z = (please show your answer to 3 decimal places.) The p-value = (Please show your answer to 4 decimal places.)
4. Past experience indicates that the time required for high school seniors to complete a standardized examination is a normal random variable with a mean of 35 minutes. If a random sample of 20 high school seniors took an average of 33.1 minutes to complete the examination with a standard deviation of 4.3 minutes, test the hypothesis at 5% level of significance that µ = 35 minutes, against the alternative µ< 35 minutes.
9. You want to know if college students have more stress in their lives than the general population (u=12), so you gather data from 25 people to test your hypothesis. Your sample has an average stress score of X=13.11 and an SD of s=3.89. Use a 1-sample t-test to see if there's a difference. please explain without excel because I cannot access thank you much !
Are couples that live together before they get married just as likely to end up divorced within five years of marriage compared to couples that live apart before they get married? 268 of the 674 couples from the study who lived together before they got married were divorced within five years of marriage. 173 of the 405 couples from the study who lived apart before they got married were divorced within five years of marriage. What can be concluded at the = 0.05 level of significance? For this study, we should use Select an answer z-test for a population proportion t-test for a population mean t-test for the difference between two independent population means z-test for the difference between two population proportions t-test for the difference between two dependent population means The null and alternative hypotheses would be: Select an answer μ1 p1 Select an answer ≠ > < = Select an answer p2 μ2 Select an answer μ1 p1 Select an answer < = > ≠ Select…