Ho: Sleeping for more than 8 hours increase productivityH₂: Sleeping for more than 8 hours does not increase productivityYou assume that sleeping for more than 8 hours can increase productivity. Thestatements above are incorrect because:The null and alternative hypotheses should be supported by relevant dataResearchers should test first before writing hypothesis statementsO Sleeping for 7-8 hours can increase productivityThe null and alternative hypotheses should be interchanged

Null and alternative hypotheses: Null hypothesis: Null hypothesis is a statement which is tested for…

Answered: Ho: Sleeping for more than 8 hours…

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 A Rollercoaster’s auditors estimate that the average daily loss from those illegally riding without tickets is at least $300, but wants to determine the accuracy of this statistic. The company researcher takes a random sample of losses over 64 days and finds that = $298 and s = $25. a) Test at α = 0.05. Be sure you cover all steps: hypothesis, critical value, acceptance range, conclusion. b) (Unrelated to a’s results) Construct a 95% confidence interval of losses.
I need help with stats/2023, section 7.1, Determine whether the claim stated below represents the null hypothesis or the alternative hypothesis. If a hypothesis test is performed, how should you interpret a decision that (a) rejects the null hypothesis or (b) fails to reject the null hypothesis? A report claims that more than 74% of households in a specific county struggle to afford basic necessities. Does the claim represent the null hypothesis or the alternative hypothesis? Since the claim (1) ______________ (contains or does not contain) a statement of equality, it represents the (2) ________________ (null or alternative) hypothesis. (a) How should you interpret a decision that rejects the null hypothesis? There (3) ___________ (is or is not) enough evidence to (4)_____________ (reject or support) the claim that more than 74% of households in a county struggle to afford basic necessities. There (5) ____________ (is or is not) enough evidence to (6)…
Previously, 11.2% of workers had a travel time to work of more than 60 minutes. An urban economist believes that the percentage has increased since then. She randomly selects 85 workers and finds that 11 of them have a travel time to work that is more than 60 minutes . Test the economist's belief at the a= 0.1 level of significance What are the null and alternative hypotheses? what are the null and alternative hypotheses? Because np0(1-p0)= < ? 10, Find the P-value.
A survey by Men’s Health magazine stated that 14% of men said they used exercise to reduce stress. Could this be valid, or is it actually less than what the magazine claims? A random sample of 100 men was selected, and 10 said that they used exercise to relieve stress. If a=0.10, test a hypothesis and state your conclusion in context.
Data from 12 individuals was collected about their sleeping habits after meditation. These scores represent their sleep quality based on a 5 point Likert scale with higher numbers meaning better sleep quality. Use a μ = 2.4 SD = 0.75. Do these individuals differ in their sleep quality compared to the group average? Solve using the five steps of hypothesis testing. how to find Ho: M and HA: M (this is part of an assignment that can be completed as many times as necessary for 100% or whatever grade you choose, I'm just trying to understand how to do all of this because it's an online summer course and I'm very lost. Any help would be appreciated in learning to understand)
Suppose a new production method will be implemented if a hypothesis test supports the conclusion that the new method reduces the mean operating cost per hour. a. State the appropriate null and alternative hypotheses if the mean cost for the current production method is $225 per hour. Ho: Select your answer 225 H. Calect your answer- 225 lot Answered D: WlacTS Tne Type I error in this situation? Claiming -Select your answer v225 when the new method Select your answer - V lower costs. What are the consequences of making this error? A mistake could be implementing the method when it Select your answer v help. c. What is the Type II error in this situation? Claiming # Select your answer v 225 when the new method Select your answer- v | lower costs. What are the consequences of making this error? This could lead to not implementing a method that Séléct your answer -V lower costs. 0=Icon Key Exercise 09.08 Algo (Type I and Type II Errors) a hp 12 ho f7 +1 15 10 & %23 %24
Using the P-value method decide if you should reject the null hypothesis or not. In a sample of 81 adults selected from one town, it is found that 8 of them have been exposed to a particular strain of the flu. At 0.01 level of significance, you wish to test the claim that the proportion of all adults in the town that have been exposed to this strain of the flu is 8%.
4:58 ( Back 11 of 11 Math 200 Fall 2019-03 Exam 2 Name: 9. Set up null and alternative hypotheses for the following. Use correct notations for the parameters. a. You with to show mean waiting time at a doctor's room is more than15 minutes. H,: H.: b. A chemists wants to prove median pH level of a solution is less than 7. H.: H,: A pollster wants to prove Mr. Smith will receiye more than 60% of the votes. H H, d. A consumer group wants to prove that the mean active ingredient in a drug is different form 10.23 mg. H,: H : e. A teacher wants to prove mean texting time for girls is different from the mean texting time for boys. H : H: f0. A Radon level of more than 4 pC/L is considered unsafe for humans. A house-inspector tests following null and alternative hypothesis. H:uS4.0 Describe the type I and Type 2 errors in this experiment. H:H>4.0 Туре I error: Type II Error: Page 5 of 5 Hope it helps, good luck y'all! Arsema 09/03/21
Herbal cancer A report in the New England Journal of Medicine notes growing evidence that the herb Aris-tolochia fangchi can cause urinary tract cancer in those who take it. Suppose you are asked to design an experi-ment to study this claim. Imagine that you have data on urinary tract cancers in subjects who have used thisherb and similar subjects who have not used it and thatyou can measure incidences of cancer and precancerouslesions in these subjects. State the null and alternativehypotheses you would use in your study.
A previous study showed to determine whether a sales tax on soda will reduce consumption of soda in the US below the current per-capita level of about 50 gallons of soda per year. Hypotheses Test is Ho: m(mue) =50 vs. Ha: m<50 where m (mue) represents the average annual consumption of soda in communities where the sales tax is implemented. (b) Now supposed sample results give a p-value of 0.41. Interpret this p-value in terms of random chance and in the context of taxes and soda consumption.
8.7 If you test a hypothesis and reject the null hypothesis in favor of the alternative hypothesis, does your test prove that the alternative hypothesis is correct? Explain.
how do i put part c into the computer? Takeout Food A magazine article reported that 15% of adults buy takeout food every day. A fast-food restaurant owner surveyed 220 customers and found that 42 said that they purchased takeout food every day. At =α0.05, is there evidence to believe the article's claim? Use the critical value method with tables. Do not round intermediate steps. (a)State the hypotheses and identify the claim. (b)Find the critical value(s). (c)Compute the test value. (d)Make the decision. (e)Summarize the results.

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