3. A researcher estimates that the average height of buildings in terms of the number of storey in theNational Capital Region is at least 15 storeys. A random sample of 12 buildings is selected, and thenumbers of storey are shown. At = 0.01, is there enough to reject the claim?20108151725363512281630Solution:1. State the hypotheses.Ho :H :2. The level of significance isand df =3. Determine the critical region.tcritical =4. Complete the table and compute for the value of sample mean, standard deviation andone sample t testX - X(X - X)?(X – X)(X – X )?20361035812152817162530n =X =S =tcomputed =5. Decision rule.6. Conclusion.

Population mean μ=15, Note: According to Bartleby guidelines expert solve only one question and…

Answered: 3. A researcher estimates that the…

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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2. Below is data on the number of vehicles involved in a fatal crash and city in California during 2019. City Single-ve Two-vehicle hicle crash fatalities Los Angeles 175 San Diego 61 San Jose San Francisco Fresno 49 22 33 Sacramento 28 Long Beach 26 crash fatalities 69 19 19 a 13 2. Is there enough evidence to support that the number of vehicles involved in a crash is related to the city in which the accident occur? null and alternate hypotheses test statistic, critical value and/or p-value expected counts reject or fail to reject the null hypothesis ● conclusion in plain English
24
3. A researcher samples 5 colony of Species of K and 5 colonies of Species L, measures their sizes as: Species K Species L 4.7 5.3 5.2 4.6 6.1 4.1 5.8 4.8 5.2 4.2 а. Test if mean colony size of Species K and Species L are different from each other? Report a p-value. (You mav need to do an additional test to decide which test to apply for comparing the means) b. What is the power of the test in part a? С. The researcher would like to design a new experiment which will allow a two tailed hypothesis test with significance 0.05 and power 0.90. What should be the sample sizes nk and ni for Species K and Species L (use k = 1). %3D
. A producer of high quality teas wants to be sure they are filling tea bags with an average weight of 5.5 grams. Any underfilling or overfilling is undesirable. The correct set of hypotheses is
1. For each row of the table you are given a p-value and a level of significance (a). Determine which hypothesis is supported, if the data are significant and which type error could be made. If a given p- value is not a valid p-value (because it is greater than 1), put an x in each box in therow. p-value Hypothesis Họ or H1 Significant or Not Significant Error Type I or Type II 0.043 0.05 0.32 0.05 0.043 0.01 0.0035 0.01 0.043 0.10 0.15 0.10 5.6 x 106 0.05 7.3256 0.01 2. For the hypothesis test, write the concluding sentence in the form used by researchers. Context: Support paying off student dept, H1: p 8 ft, p-value-5.6 x 10°, a=0.05, n=56. 4. For the hypothesis test, write the concluding sentence in the form used by researchers. Context: Blood pressure for men and women, H1: Hw # HM ft, p-value3D0.0035, a=0.01, n=2403.
9. A population has a mean of u = 80 with o= 20. a. If a single score is randomly selected from this population, how much distance, on average, should you find between the score and the population mean? b. If a sample of n = 100 scores is randomly selected from this population, how much distance, on average, should find between the sample mean and the population mean? you
Express the alternative hypothesis in symbolic form. A psychologist claims that the mean amount of time (in hours) that females spend in talk therapy is more than that of men. Assume that two samples are independent. Let the female talk therapy times be the first population and the male talk therapy times be the second population.
p2. answer only pls 10. what is the null hypothesis 11. what is the alternative hypothesis 12. what is the claim, the null hypothesis or the alternative hypothesis 13. what type of test to use 14. what is the level of significance? 15. what is the degrees of freedom
Please solve asap
A normal distribution of scores has a standard deviation of 10 and a mean of 0. Find the z-scores corresponding to each of the following values: a) A score that is 20 points above the mean. b) A score that is 10 points below the mean. c) A score that is 15 points above the mean d) A score that is 30 points below the mean. IQ scores have a mean of 100 and a standard deviation of 16. Albert Einstein reportedly had an IQ of 160. a. Convert Einstein’s IQ score to a z score.
1. Americans consume an average of 70 hot dogs per year. A researcher is skeptical of that value and randomly samples 600 people and computes a sample mean of 68.3 hot dogs. a. Which value above is a parameter and which is a statistic? b. If tomorrow you were going to sample 60 people, around what value do you think the sample mean will be? Do you think it will be exactly that value?
Milan

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