Choose one problem, formulate the null and alternative hypothesis. A. Choose one problem, formulate the null and alternative hypothesis. Then identify situationswhere Type I and Type II errors are committed on the 1 problem that you choose and state alsothe possible consequences of each error.1. A manufacturer of IT gadgets recently announced they had developed a new battery for a tabletand claimed that it has an average life of at least 24 hours. Would you buy this battery?2. A teenager who wanted to lose weight is contemplating on following a diet she read about inthe Facebook. She wants to adopt it but, unfortunately, following the diet requires buyingnutritious, low calorie yet expensive food. Help her decide.3. Alden is exclusively dating Maine. He remembers that on their first date, Maine told him thather birthday was this month. However, he forgot the exact date. Ashamed to admit that he did notremember, he decides to use hypothesis testing to make an educated guess that today is Maine'sbirthday. Held Alden do it.4. After senior high school, Lilifut is pondering whether to pursue a degree in Statistics or not. Shewas told that if she graduates with a degree in Statistics, a life of fulfillment and happiness awaitsher. Assist her in making a decision.

Using the given information appropriate hypothesis, i.e., the claim, that is expected to be tested…

Answered: A. Choose one problem, formulate 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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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
Suppose the null hypothesis, H0, is: a weightlifting bar can withstand weights of 800 pounds and less. And the alternative hypothesis, Ha, is: a weightlifting bar can withstand weights of more than 800 pounds.What is the Type I error in this scenario? Select the correct answer below: You say there is insufficient evidence to conclude that the weightlifting bar can withstand weights of more than 800 pounds when, in fact, it can not. You say there is insufficient evidence to conclude that the weightlifting bar can withstand weights of more than 800 pounds when, in fact, it can. You say there is sufficient evidence to conclude that the weightlifting bar can withstand weights of more than 800 pounds when, in fact, it can not. You say there is sufficient evidence to conclude that the weightlifting bar can withstand weights of more than 800 pounds when, in fact, it can.
Please show step by step work: An original claim is made that 60% of American consumers are not comfortable with the use of drone delivery for merchandise. Hypothesis testing results in Rejection of the Null hypothesis. Using Figure 8-5 on page 366 of the text, clearly state the final conclusion reached from this hypothesis test.
You conduct a poll of FIU students in order to determine the percentage of students (p) who agree with the statement “Hot-dogs are one of my favorite foods”. In your poll, you find that 80 out of 100 students agree. You conduct a two-sided hypothesis test where H0: p = 0.7, where p is the proportion of students whose favorite food is hot dogs. Which of the following statements are true: I. You reject the null hypothesis when α = 0.05 II. You reject the null hypothesis when α = 0.01 III. The test statistic (Z) equals Z = +1.5 Group of answer choices II only
Two teaching assistants, Camille and Julianne, wanted to investigate the the average number of hours students spend on homework each week. The hypotheses they used were: Ho: µ 3.5, Ha: µ > 3.5. Each TA collected a random sample of 50 students and performed the hypothesis test. Camille rejected the null hypothesis based on her sample, and Julianne failed to reject the null hypothesis based on her sample. Suppose the actual average time students spend on homework each week is 3.2 hours. Which of the following is correct? A. Camille committed no error and Julianne committed a typeI error. B. Camille committed no error and Julianne committed a Type Il error. C. Camille committed a type I error and Julianne committed no error. D. Camille committed a type I error and Julianne committed a type Il error.
-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?
A study done on a marriage counseling course showed that the proportion of couples for which the communication program can prevent divorce is 79%. Suppose we have strong reason to believe the proportion is less than 79%, and we carry out a hypothesis test. State the null hypothesis H0 and the alternative hypothesis H1 that we would use for this test. 1. Ho: 2. H1:
A poll done for Newsweek found that 13% of Americans have seen or sensed the presence of an angel. A contingent doubts that the percent is really that high. It conducts its own survey. Out of 76 Americans surveyed, only two had seen or sensed the presence of an angel. As a result of the contingent’s survey, would you agree with the Newsweek poll? Perform a hypothesis test, using the five-step process, to test whether the proportion of Americans who have seen or sensed the presence of an angel is less than 13%.
The null hypothesis states that there is no difference between a parameter and a specific value, or that there is no difference between two parameters.
Kenya is a behavioral psychologist who works with children on the Autism Spectrum. She suggests that blowing bubbles may effect children's eye contact (she hasn't predicted if it would increase or decrease). She works with a student who makes 5 points of eye contact in a session. How would the NULL hypothesis be state for her study using bubbles? µ < 5 µ = 5 µ > 5 µ ≠ 5
These are previous year papers that i want to solve before the start of next semester. Can you please help me solve these? A new drug has been developed to treat cancer. It is of interest to know whether the low dose (X1 = 0) or high dose (X1 = 1) will be better for cancer patients. There are 60% of patients randomly assigned to high dose.For this question, if asked to do a hypothesis test, please include the following:1. The formula of the test statistic,2. the reference distribution with degrees of freedom and the conditions for the test statisticto follow this reference distribution,3. plug in the numbers from the R output into the test statistic. You do not need to simplifythe expression,4. state when will you reject or fail to reject the hypothesis. a)Write out the linear regression model of Y (a continuous measure of tumor size) on dose X1 using low dose as reference level.b) The r output of the regression model from part 1 is given below. Fill in the blanks. Call:lm(formula = Y…
A presidential candidate claims that the proportion of college students who are registered to vote in the upcoming election is at least 64%. Suppose that we want to sample a number of college students and carry out a hypothesis test to see if this daim may be refuted. State the null hypothesis H, and the alternative hypothesis H, that we would use for this test. H: 0 H;: 0 A OSO D=0

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