Consider the following hypothesis test:Ho : u = 20H1: u + 20A sample of 200 items will be taken and the population standard deviation is given asO=10.Using a=.05, compute the probability of making a Type II error if the populationmean is 18.Do NOT use EXCELO a) 0.1949b) 0.8949O c) 0.3949(O d) None of the answers are correcte) 0.4949

Answered: Image /qna-images/answer/38e753f4-25d8-4c75-bb99-383429e2f9c0.jpg

Answered: Consider the following hypothesis 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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Assume that hybridization experiments are conducted with peas having the property that for offspring, there is a 0.75 probability that a pea has green pods. Assume that the offspring peas are randomly selected in groups of 14. Complete parts (a) through (c) below. a. Find the mean and the standard deviation for the numbers of peas with green pods in the groups of 14. The value of the mean is μ = 10.5 peas. (Type an integer or a decimal. Do not round.) The value of the standard deviation is o = (Round to one decimal place as needed.) Values of (Round to one decimal place as needed.) ... b. Use the range rule of thumb to find the values separating results that are significantly low or significantly high. peas. peas or fewer are significantly low. The result (Round to one decimal place as needed.) Values of peas or greater are significantly high. (Round to one decimal place as needed.) c. Is a result of 6 peas with green pods a result that is significantly low? Why or why not?…
To estimate u, the mean salary of full professors at American colleges and universities, you obtain the salaries of a random sample of 400 full professors. The sample mean is x = $73,220 and the sample standard deviation is s = $4400. Which of the following conditions is NOT required to construct a 90% confidence interval for u? Oa random 10n SN np 2 10 and n(1-p) 210 n2 30 or stated as normal
65 homeless people in San Jose were asked their age. The sample mean age was 33.2 years. Let x be a random variable representing ages of homeless people in San Jose. Assume that x has a normal distribution and o = 7.3 years. Do the data indicate that the mean age of the population of homeless people in San Jose is less than 35 years old? Use a = 0.05. Identify the following in your answer. 1. Identify the null hypothesis Ho and alternate hypotheses H, for the problem. 2. Identify the sample statistic, test statistic, p-value and calculator key used: Sample Statistic (sample mean) (Stated in problem) = Test Statistic (z) (Round to two decimal places) %3D P-value: (Round to four decimal places) = Calculator key used: 3. Identify the significance level and determine if you reject or fail to reject the null hypothesis. significance level = Do you reject or fail to reject Ho ? 4. State your conclusion. Upload your answer. Remember you can only upload one document. Upload Choose a File
A labour economist aims to estimate the variance of unemployed workers' mathematic test scores. Assume that a random sample of 18 scores had a sample standard deviation of 10.4. Using the information above, form a 90% confidence interval for the population variance. O a) The confidence interval is exactly between 86.64 and 222.07 Ob) The confidence interval is exactly between 46.64 and 202.07 O c) The confidence interval is exactly between 66.64 and 212.07 () d) None of the answers are correct
In a study of abstract reasoning, a sample group of male female students scored as shown below on a test of abstract reasoning: Sex Male Female Sample Size 95 83 Mean 29.21 30.92 Standard Deviation 11.56 7.81 Assuming that our samples are random, would further testing of similar groups of male and female students give virtually the same result. Use alpha equal to 0.10
Assume that hybridization experiments are conducted with peas having the property that for offspring, there is a 0.75 probability that a pea has green pods. Assume that the offspring peas are randomly selected in groups of 12. Complete parts (a) through (c) below. a. Find the mean and the standard deviation for the numbers of peas with green pods in the groups of 12. The value of the mean is u= 9 peas. (Type an integer or a decimal. Do not round.) The value of the standard deviation is σ = 1.5 peas. (Round to one decimal place as needed.) b. Use the range rule of thumb to find the values separating results that are significantly low or significantly high. Values of peas or fewer are significantly low. (Round to one decimal place as needed.)
THE ANSWER IS NOT 2.02!!!!
The mean voltage and standard deviation of 10 batteries from each manufacturer were measured. The results are summarized in the following table. Manufacturer Sample mean voltage (millivolts) Sample standard deviation (millivolts) A 136 3 B 132 5 What type of hypothesis test should be performed? What is the test statistic? What is the number of degrees of freedom? Does sufficient evidence exist to support the claim that the voltage of the batteries made by the two manufacturers is different at the α=0.1 significance level?
Assume that hybridization experiments are conducted with peas having the property that for offspring, there is a 0.25 probability that a pea has green pods. Assume that the offspring peas are randomly selected in groups of 40. Complete parts (a) through (c) below. a. Find the mean and the standard deviation for the numbers of peas with green pods in the groups of 40. The value of the mean is u = peas. (Type an integer or a decimal. Do not round.) The value of the standard deviation is o =| peas. (Round to one decimal place as needed.) b. Use the range rule of thumb to find the values separating results that are significantly low or significantly high. Values of peas or fewer are significantly low. (Round to one decimal place as needed.) Values of peas or greater are significantly high. (Round to one decimal place as needed.) c. Is a result of 2 peas with green pods a result that is significantly low? Why or why not? The result significantly low, because 2 peas with green pods is peas.…
Consider the hypothesis statement to the right using a = 0.10 and the data to the right from two independent samples. a) Calculate the appropriate test statistic and interpret the result. b) Calculate the p-value and interpret the result. Click here to view page 1 of the standard normal table. Click here to view page 2 of the standard normal table X = 80 X2 = 72 o1 = 30 n1 = 55 02 = 17 n2 = 50 a) The test statistic is 1.70 (Round to two decimal places as needed) Determine the appropriate critical value(s). The critical value(s) is(are) (Round to two decimal places as needed Use a comma to separate answers as needed.)
In conducting a test on the hypotheses Ho: μ = 50 and Ha: μ > 50, you find that the population mean is 55 when it is actually 50. This results in what type of error? O No error ○ Type I error ○ Type II error Standard deviation of the mean O There is not enough information given
A1,

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