Determine the null and alternative hypotheses What type of variable is "drive an American-made automobile, or not"?OA. DiscreteOB. Qualitative with more than two possible outcomesOC. ContinuousD. Qualitative with two possible outcomesWhat type of hypothesis test is appropriate to conduct for this research?OA. Hypothesis test on a population meanOB. Hypothesis test on a population standard deviationc. Hypothesis test on a population proportionDetermine the null and alternative hypotheses.Ho: ▼H₁: ▼(Type integers or decimals. Do not round.)C

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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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There are 10 applicants for an accountant position in the Purefoods-Hormel Company Inc. The company decides to have a panel interview to make sure that they could hire the best applicant based on qualifications. In the screening procedure. JR is one among the applicants who will be interviewed by the panel members. Will they hire JR?1. State the null and alternative hypotheses 2 The company could probably make a correct conclusion or could commit an error. Write the possible conclusions. Correct:Correct: Type 1 Error:Type 2 Error:
Northwest claims that exactly 80% flights arrived on time in this September. 100 flights were randomly selected in this September, and 70% were on time. Set up the null and alternative hypotheses to test for the Northwest's claim.
A private school official claims that more than 70% of the students who come to their school to prepare for the university entrance exam, get the degree they want at the university. In order to investigate this claim, 120 students who were randomly selected among the students who went to the said school and won the university were asked whether they won the department they wanted or not, and it was learned that 90 students won the department they wanted in the university. Construct the hypothesis about the official's claim. Which of the following hypothesis is correct? H0 : P ≤ 0.75 H1 : P > 0.75 H0 : P ≤ 0.70 H1 : P > 0.70 H0 : P = 0.70 H1 : P < 0.70 H0 : P = 0.75 H1 : P ≠ 0.75 H0 : P = 0.70 H1 : P ≠ 0.70
Section D: A research team believes that the systolic blood pressure of adult males is normally distributed with a population variance equal to 400. A simple random sample of 36 males selected from the adult male population had a mean systolic blood pressure reading of 130. Let u denote the mean systolic blood pressure of adult males. Suppose the research team wants to test, at the 5% level of significance, whether the mean systolic blood pressure of adult males is not equal to 135. Suppose the assumptions of this hypothesis test are satisfied.
When conducting a hypothesis test, we hope to avoid commiting a type 1 error, which is: 1. Not as bad as committing a type 2 error 2. rejecting a null hypothesis when it is true 3. rejecting the alternate hypothesis when it is true 4. accepting the null hypothesis when the alternate hypothesis is true
If in general a reasearch question needs to be answered by using the null and alternative hypotheses correctly in words and statistical notations? How is it done?
Telephone Calls A researcher knew that before cell phones, a person made on average 2.5 calls per day. He believes that the number of calls made per day today is higher. He selects a random sample of 34 individuals who use a cell phone and asks them to keep track of the number of calls that they made on a certain day. The mean was 2.6. At a=0.01, is there enough evidence to support the researcher's claim? The standard deviation for the population found by a previous study is 0.6. Assume that the variable is normally distributed. Use the critical value method with tables.
A local police chief claims that 46% of all robbery-related arrests are never prosecuted. A sample of 500 arrests shows that 43% of the arrests were not prosecuted. Using this information, one officer wants to test the claim that the number of arrests that are never prosecuted is below what the chief stated. Is there enough evidence at the 0.05 level to support the officer's claim? A)State the null and alternative hypotheses. B) Find the value of the test statistic. Round your answer to two decimal places. C)Specify if the test is one-tailed or two-tailed. D)Determine the P-value of the test statistic. Round your answer to four decimal places. E)Identify the value of the level of significance. F)Make the decision to reject or fail to reject the null hypothesis. G)State the conclusion of the hypothesis test.
-Find the correct null hypothesis and for each correct alternative hypothesis 7. Suppose you hear a claim that the average score on a national exam is 78. You think the average is higher than that, and your sample of 100 students produces an average of 75. What are the null and alternative hypotheses?
6
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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? a) State the null and alternative hypotheses in words. b) State the null and alternative hypotheses using symbols. c) What type of test is this?

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