10.2.21Question HelpTwenty years ago, 53% 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 that284 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 theydid twenty years ago? Use the a = 0.1 level of significance.Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2).Because npo (1-Po= 199.3> 10, the sample size isless than5% of the population size, and the samplecan be reasonably assumed to be random,the requirements for testingthe hypothesisaresatisfied.(Round to one decimal place as needed.).What are the null and alternative hypotheses?Ноversus H,:(Type integers or decimals. Do not round.)Enter your answer in the edit fields and then click Check Answer.?3partsremainingClear AllCheck AnswerPAGESMAY6.W吕口F3888F4escF6F8F9F10F11F12F5F7F1F2$&*2456.78.QERYUPtabSDFGHKockVB3.%#3

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ause npo (1-Po) = 199.3 nypothesis > 10, the sample size is less than 5% of the %3D are satisfied. und to one decimal place as needed.) at are the null and alternative hypotheses? versus H,: ype integers or decimals. Do not round.)

ause npo (1-Po) = 199.3 nypothesis > 10, the sample size is less than 5% of the %3D are satisfied. und to one decimal place as needed.) at are the null and alternative hypotheses? versus H,: ype integers or decimals. Do not round.)

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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percentage may be now, so a of 250 of last year's freshmen 4. 78% of all to in Fall 2015. You think that the a and tind that 84% returned, www.csun.edu/counts/one_year_continuation_rate-plip a. What is p? _ What is the number of successes? What is n? b. Write the hypotheses: Circle the best definition of p. the proportion of all of last year's freshmen who returned the proportion of all 2014 CSUN freshmen who returned the proportion of all CSUN freshmen among the 250 who returned C. Assuming that Ho is true, the sampling distribution of p has a mean of Use the formula to compute the SE of the sampling distribution of p. Complete this sketch of the sampling distribution of p. Put a scale on the horizontal axis. Then locate the result from the sample and shade in area representing the p-value. (Is the area representing the p-value on one side or two sides?) Use StatCrunch to find the p-value for this situation. e. Is there statistically significant evidence that the percentage is…
07 A statistics professor wants to determine whether the average grade on Assignment 1 differs significantly from 23 (A average). a) State the null and alternative hypotheses. b) Based on the t-test in the following table 1, make a decision regarding the null hypotheses. c) Explain the results observed in (b). assign1 assign1 t -4.944 N dif 15 14 Mean 21.0333 Std. Deviation 1.54072 Test Value = 23 Mean Sig. (2-tailed) Difference .000 -1.96667 Table 1: T-test Std. Error Mean 39781 95% Confidence Interval of the Difference Lower Upper -2.8199 -1.1134
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A new process has been designed to make ceramic tiles. The goal is to have no more than 5% of the tiles be nonconforming due to surface defects. A random sample of 1000 tiles is inspected. Let p̂ be the proportion of nonconforming tiles in the sample. a) If the sample proportion of nonconforming tiles were 0.075, would it be pausible that the goal had been reached? Explain. b) If 5% of the tiles produced are nonconforming, what is P (p̂ ≥ 0.075)? c) Based on the answer to part a, if 5% of the tiles are nonconforming, is a proportion of 0.075 nonconforming tiles in a sample of 1000 unusually large?
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Studies done by the CDC have found that about 35.2% of all American adults do not get enough sleep (<7 hours) in 2014. Researchers feel that this percent is higher for men (age 18-24). From a sample of 200 men, 88 indicated that they get less than 7 hours of sleep. Test the researchers' hypothesis that the percent is higher than 35.2%. Write down the null and alternative hypotheses. b. Calculate the test statistic. Mr C. Calculate the p-value. d. Based on the p-value, what is your conclusion? a.
Consumer Reports stated that the meantime for a Chrysler Concorde to go from 0 to 60 miles per hour in 8.7 seconds. If you want to set up a statistical challenge to claim the average time from 0 to 60 miles per hour is not equal to 8.7 seconds, what would be the alternate hypothesis and type of test? H1: μ≠ 8.7, a right-tailed test b)H1: μ≠ 8.7, two-tailed test c) H1: μ≠ 8.7,left-tailed test
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17)
Can you please explain and help me do this since I am allowed to on a ti84? Thank you. ex:You are testing the claim that the proportion of men who own cats is larger than the proportion of women who own cats.You sample 90 men, and 20% own cats.You sample 170 women, and 90% own cats.Find the proportion of the pooled samples, (pcpc), as a decimal, rounded to two decimal places.