Twenty years ago, 51% of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. A recent survey found that 298 of 850parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. Do parents feel differently today than they did twenty years ago?Use the α=0.05 level of significance.Because npo (1-Po) = 212.4hypothesis are satisfied.(Round to one decimal place as needed.)What are the null and alternative hypotheses?10, the sample size isHoversus H₁(Type integers or decimals. Do not round.)less than 5% of the population size, and the sample can be reasonably assumed to be random,the requirements for testing the

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Answered: Twenty years ago, 51% of parents of…

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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In a recent poll six hundred adults were asked a series of questions about the state ofthe economy and their children’s future. One question was, “do you expect your children to have a better life than you have had, a worse life, or a life about the same asyours?” The responses showed 242 better, 310 worse, and 48 about the same. Use thesign test and a =.05 to determine whether there is a difference between the number ofadults who feel their children will have a better life compared to a worse life. What isyour conclusion?
Suppose that 75%75% of college students prefer pepperoni on their pizzas. You took a sample of ?=150n=150 at your college and found that 70%70% said they want pepperoni on their pizzas. You want to know if your college is different from the rest at the 10%10% level. What is the ?P‑value for this test?
A software company is interested in improving customer satisfaction rate from the 53% currently claimed. The company sponsored a survey of 223 customers and found that 128 customers were satisfied. What is the test statistic 2? Ex: 2.22 Check Next Feedback?
Twenty years ago, 52% of parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. A recent survey found that 281 of 800 parents of children in high school felt it was a serious problem that high school students were not being taught enough math and science. Do parents feel differently today than they did twenty years ago? Use the a=0.1 level of significance. *** Because npo (1-Po) = 199.7 less than 5% of the population size, and the sample can be reasonably assumed to be random, the 10, the sample size is requirements for testing the hypothesis are satisfied. (Round to one decimal place as needed.) D What are the null and alternative hypotheses? Ho versus H₁ (Type integers or decimals. Do not round.) Help me solve this View an example Clear all Check answer Type here to search O 1:12 PM 6/18/2022 3 1 7 Q 2 @ 7 S E C $ 4 R 06 5 T S B 6 Get more help - 18 H & N 8 M hp K a O a P 12 (?) prt sc 94°F Mostly…
Support for the U.S. death penalty for convicted murderers was 63% in 2014 (Gallup poll results 2018). In a recent survey of 150 randomly selected U.S. adults, 75 said they were in favor of the death penalty for those convicted of murder. Does this sample appear to come from a population with a lower proportion in favor of the death penalty? d) Say that a = 0.05, what does this mean. Explain in the context of the problem. e) What would it mean to make a type II error? Explain in the context of this problem. f) Use a 0.05 significance level to test the claim. State your conclusion AND interpret your results.
What is t critical for a study that contains 9 participants in one group and 11 is another group? Input three decimals. Answer:
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?
How do I find the P-value using my TI-84 calculator?
In a fishing lodge brochure, the lodge advertises that 75% of its guests catch northern pike over 20 pounds. Suppose that last summer 59 out of a random sample of 85 guests did, in fact, catch northern pike weighing over 20 pounds. Does this indicate that the population proportion of guests who catch pike over 20 pounds is different from 75% (either higher or lower)? Use a = 0.05. (a) What is the level of significance? State the null and alternate hypotheses. O Ho: p = 0.75; H1: p 0.75 (b) What sampling distribution will you use? O The Student's t, since np 5 and ng > 5. O The standard normal, since np 5 and nq > 5. What is the value of the sample test statistic? (Round your answer to two decimal places.) (c) Find the P-value of the test statistic. (Round your answer to four decimal places.)
You are testing the claim that the proportion of men who own cats is smaller than the proportion of women who own cats.You sample 90 men, and 80% own cats.You sample 110 women, and 70% own cats. test statistic = [three decimal accuracy]

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