Given that H: u = 100 and H: u # 100, a researcher accepted the null hypothesis whenu = 100. What type of error did the researcher commit?A. Type l errorB. Type Il errorC. Type III errorD. No error7. JA school administrator claims that the mean IQ of all the students in their school is 126. Asupervisor wants to test this claim. In the hypothesis testing made by the supervisor, sherejected the null hypothesis when the true population mean is 126. What type of error didthe supervisor commit?A. Type l errorВ. Туре II errorC. Type III errorD. No error8.) What is a type of error wherein the null hypothesis is accepted when in fact it is false?A. Type l errorВ. Туре II errorс. Туре II errorD. Type IV error9) A shop owner claims that his shop earns an average of P10 000 a day with a standarddeviation of P850. To test this claim, a random sample of 40 operating days was testedand found that the mean is P10 450. What is the z-score of the sample mean P 10 450?A. 1.15с. 2.48В. 1.83D. 3.3510) A nutritionist wants to estimate the mean amount of junk food that is consumed byteenagers aged 11 to 14 years in a week. From a random sample of 50 teenagers, themean amount of junk food consumption per week is 250 g. What is the parameter in theproblem?A. random sample of 50 teenagersB. ages of 11 to 14 yearsC. mean amount of junk food consumption per weekD. mean amount of junk food consumption of teenagers aged 11 to 14 years

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Description: Given that H: u = 100 and H: u # 100, a researcher accepted the null hypothesis whenu = 100. What type of error did the researcher commit?A. Type l errorB. Type Il errorC. Type III errorD. No error7. JA school administrator claims that the mean IQ o

6. The correct answer is option D. No error. Explanation: When the hypothesized mean is equal to…

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6. Given that H: u = 100 and H,: u # 100, a researcher accepted the null hypothesis when u = 100. What type of error did the researcher commit? А. Туре 1 error В. Туре I error С. Туре III error D. No error 7. A school administrator claims that the mean IQ of all the students in their school is 126. A supervisor wants to test this claim. In the hypothesis testing made by the supervisor, she rejected the null hypothesis when the true population mean is 126. What type of error did the supervisor commit? A. Type l error B. Type Il error с. Туре II error D. No error 8.) What is a type of error wherein the null hypothesis is accepted when in fact it is false?

6. Given that H: u = 100 and H,: u # 100, a researcher accepted the null hypothesis when u = 100. What type of error did the researcher commit? А. Туре 1 error В. Туре I error С. Туре III error D. No error 7. A school administrator claims that the mean IQ of all the students in their school is 126. A supervisor wants to test this claim. In the hypothesis testing made by the supervisor, she rejected the null hypothesis when the true population mean is 126. What type of error did the supervisor commit? A. Type l error B. Type Il error с. Туре II error D. No error 8.) What is a type of error wherein the null hypothesis is accepted when in fact it is false?

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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Answers: 3a) Z = -1.374, do not reject Ho: no evidence that the means differ significantly from each other b) 81, c) t = .72, do not reject Ho: no evidence that the experimental mean is significantly higher than the control mean
p = proportion of motorists who check their cell phones while drivingA researcher believes that less than 45% of motorists in his country do not check their cell phone when driving A sample of 300 motorists was taken, of which 120 said that they do not use it when they drive.Can you be sure with 99% confidence that the researcher is right? Choose 1. the correct conclusion2. the correct interpretationSelect one: a) 1. H0 is rejected2. With 99% confidence it can be ensured that less than 45% of motorists check their phone while driving b) 1. H0 is not rejected2. With 99% confidence, it can be ensured that it is not true that less than 45% of motorists consult their cell phone while driving. c) 1. H0 is rejected2. With 99% confidence, it can be ensured that it is not true that less than 45% of motorists consult their cell phone while driving. d) 1. H0 is not rejected2. With 99% confidence it can be ensured that less than 45% of motorists check their phone while driving
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Suppose 230 subjects are treated with a drug that is used to treat pain and 54 of them developed nausea. Use a 0.10 significance level to test the claim that more than 20% of users develop nausea י10 -p-v.zu H p> 0.20 ldentify the test statistic for this hypothesis test. The test statistic for this hypothesis test is Round to two decimal places as needed.) clicle Chocle A
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A private and a public university are located in the same city. For the private university, 1043 alumni were surveyed and 654 said that they attended at least one class reunion. For the public university, 809 out of 1324 sampled alumni claimed they have attended at least one class reunion. Is the difference in the sample proportions statistically significant? (Use α=0.05) a) Reject the null hypothesis which states there is no difference in the proportion of alumni that attended at least one class reunion in favor of the alternate which states there is a difference in the proportions. b) Fail to reject the null hypothesis. There is not enough evidence to conclude that there is a difference in the proportions. c) There is not enough information to make a conclusion.
10. The label on a bag of potato chips claims that there are 4mg of sodium per serving. Suppose an agency is going to test this claim. The agency will only pursue a case if the mean sodium per serving is too high. A sample of 256 bags produced a sample average of 4.400. The standard deviation of sodium per serving is known to be 4. We want to know whether there is a problem with the label. (a) What is the null hypothesis and what is the alternative hypothesis? (b) What is the value of the test statistic? (c) What is the p-value of the test? (Compute to 4 digits after the decimal point). (d) Do we reject Ho at the .05 level of significance? Reject or Not Reject (e) Do we reject Ho at the .01 level of significance? Reject or Not Reject 11. Using the current system, the mean wait time for people who call for technical support is 4 minutes. A new system was designed to reduce the mean wait time. A random sample of 225 calls produced a sample average of 3.730. The standard deviation of wait…
A psychiatrist claims that the mean age at which children start walking is 12.5 months. A nurse thinks it takes longer. The nurse took a random sample of 18 children and found the mean age at which they started walking was 12.9 months with a standard deviation of 0.8 months. A) do a hypothesis of the nurses guess. B) state the null and alternative hypothesis. Let a= 0.1
15. The error of rejecting a true null hypothesis is . committed when not enough information is available а Турe II error а Турe I error committed when the sample size is too small