Is there sufficient evidence to reject the null hypothesis? (Use a 0.10 level of significance.)OA. Reject the null hypothesis. There is sufficient evidence at the 0.10 level of significance that the population mean wait time is less than 25 minutes.OB. Reject the null hypothesis. There is sufficient evidence at the 0.10 level of significance that the population mean wait time is greater than 25 minutes.OC. Do not reject the null hypothesis. There is insufficient evidence at the 0.10 level of significance that the population mean wait time is less than 25 minutesO D. Do not reject the null hypothesis. There is insufficient evidence at the 0.10 level of significance that the population mean wait time is greater than 25 minutes.b. Interpret the meaning of the p-value in this problem.Choose the correct answer belowOA. The p-value is the probability that the actual mean wait time is 23.22 minutes or lessOB. The p-value is the probability that the actual mean wait time is 25 minutes given the sample mean wait time is 23 22 minutesOC. The p-value is the probability that the actual mean wait time is more than 23.22 minutes.OD. The p-value is the probability of getting a sample mean wait time of 23.22 minutes or less if the actual mean wait time is 25 minutes. A hospital was concerned about reducing its wait time. A targeted wait time goal of 25 minutes was set. After implementing an improvement framework and process, a sample of 360patients showed the mean wait time was 23.22 minutes, with a standard deviation of 16.36 minutes. Complete parts (a) and (b) belowa. If you test the null hypothesis at the 0.10 level of significance, is there evidence that the population mean wait time is less than 25 minutes?State the null and alternative hypotheses.OA. H₂ ##25H₁ 225OD. H₂ #<25H₂ p> 25Find the test statistic for this hypothesis testtest statisticOB. HH₁OE. H<25225225H₂ <25CODE(Type an integer or a decimal Round to two decimal places as needed.)Find the p-valueThe p-value is(Type an integer or a decimal. Round to three decimal places as needed.)OC. Hg µ²25H₁: #25OF. H₂ µ> 25H₂: <254

It is given that: The targeted wait time is 25 minutes. From the 360 sampled patients (i.e.,…

Answered: A hospital was concerned about reducing…

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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According to a research study, college students spent 24.2 hours doing homework per week last year, on average. A random sample of 16 college students was surveyed and the mean amount of time per week each college student spent on homework was 23.7. This data has a sample standard deviation of 2.2. (Assume that the scores are normally distributed.) Researchers conduct a one-mean hypothesis at the 1% significance level, to test if the mean amount of time college students spend on homework per week is less than the mean amount of time last year. Which answer choice shows the correct null and alternative hypotheses for this test? Select the correct answer below: H0:μ=24.2; Ha:μ>24.2, which is a right-tailed test. H0:μ=24.2; Ha:μ<24.2, which is a left-tailed test. H0:μ=23.7; Ha:μ>23.7, which is a right-tailed test. H0:μ=23.7; Ha:μ<23.7, which is a left-tailed test.
Please share the solution for the last 2 parts (c & d) in bold. The first three parts answered by your team. In a study of the Gouldian finch, Griffith et al. (2011) looked at stress caused by having an incompatible mate.There are two genetically distinct types of Gouldian finches, one having a red face and the other having a black face. Previous experiments have shown that female finches have a strong preference for mating with males with the same face color as themselves , and that when different face types of finch mate with one another, their offspring are less likely to survive than when both parents are the same type. Researchers paired females sequentially with males of both types in random order,In other words, each female bred twice once with a compatible male and once with an incompatible male.Each time, females produced a brood of young with the assigned male.For each pairing, the researchers measured the blood corticosterone concentration (in units of ng/ml) as an index…
The mean water temperature downstream from a power plant cooling tower discharge pipe should be no less than 98°F. Past experience has indicated that the standard deviation of temperature is 2.1°F. The water temperature is measured on nine randomly chosen days, and the average temperature is found to be 96°F. Should the water temperature be judged acceptable with 10% level of significance? the complete Test of Hypothesis
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,800 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 100 buses resulted in a sample mean of 3,875 bus miles and a sample standard deviation of 275 bus miles. Complete parts (a) and (b) below. Question content area bottom Part 1 a. Is there evidence that the population mean bus miles is more than 3,800 bus miles? (Use a 0.05 level of significance.) State the null and alternative hypotheses. The critical value(s) for the test statistic is(are) (Round to two decimal places as needed. Use a comma to separate answers as needed.)
A hospital was concerned about reducing its wait time. A targeted wait time goal of 25 minutes was set. After implementing an improvement framework and process, a sample of 351 patients showed the mean wait time was 23.05 minutes, with a standard deviation of 16.27 minutes. Find the test statistic for this hypothesis test.
Use the following scenario to answer the next 6 questions. An engineer has designed a valve that will regulate water pressure on an automobile engine. The valve was tested on 30 engines and the mean pressure was 4.8 psi with a standard deviation of 1 psi. If the valve was designed to produce an overall mean pressure of 5.0 psi, is there sufficient evidence at the 10% level of significance that the valve performs below specifications? In this scenario, the decision to use a two-tailed versus a one-tailed test affected our ability to reject the null (and thus our conclusion). Group of answer choices True False
Dr. Graham is interested in determining if middle-aged adults use text messaging more or less frequently than the general population. Dr. Graham collects information on text messaging from a random sample of 50 adults ages 25 to 44. Dr. Graham finds that these individuals send or receive an average of 68 text messages per day. Using the population mean (and standard deviation) of 41.5 texts per day (34 texts per day), determine whether adults in this age group use text messaging more than the general public.
Which is cheaper: eating out or dining in? The mean cost of a steak, salad, and rice bought at the grocery store is $13.04. A sample of 30 neighborhood restaurants showed a mean price of $12.15 and a standard deviation of $2 for a comparable restaurant meal. 1.1) Develop appropriate hypotheses for a test to determine whether the sample data support the conclusion that the mean cost of a restaurant meal is less than $13.04. 1.2) At alpha = 0.05, what is your conclusion? Show a detailed solution to support your conclusion. (Find p-values at: https://www.socscistatistics.com/pvalues/tdistribution.aspx)
It is suggested that the mean one-day travel expense by tourists in Moscow is $500 (assume all one-day travel expenses in Moscow are approximately normally distributed). In a random sample of 16 Moscow tourists, the sample mean one-day travel expense was $482 with a sample standard deviation s = 22.5. Our goal is to test whether or not the mean one-day travel expense is $500 or not. Determine the value of the appropriate test statistic to perform this test. Do not round. Note: the standard deviation of all one-day travel expenses in Moscow is unknown. This is why we must use the t-distribution instead of the standard normal distribution.
A hospital was concerned about reducing its wait time. A targeted wait time goal of 25 minutes was set. After implementing an improvement framework and process, a sample of 325 patients showed the mean wait time was 23.05 minutes, with a standard deviation of 16.14 minutes. Complete parts (a) and (b) below. a. If you test the null hypothesis at the 0.10 level of significance, is there evidence that the population mean wait time is less than 25 minutes? State the null and alternative hypotheses. Ο Β. Η0: μ 25 H1: µ 25 H1: µ< 25 Ο D . H : μ# 25 H,: µ2 25 Ο Ε. Ho: μ < 25 H,: µ2 25 O F. Ho: µ2 25 H,: µ# 25 Find the test statistic for this hypothesis test. tSTAT = (Type an integer or a decimal. Round to two decimal places as needed.) Find the p-value. The p-value is (Type an integer or a decimal. Round to three decimal places as needed.)
A metropolitan transportation authority has set a bus mechanical reliability goal of 3,900 bus miles. Bus mechanical reliability is measured specifically as the number of bus miles between mechanical road calls. Suppose a sample of 100 buses resulted in a sample mean of 3,950 bus miles and a sample standard deviation of 225 bus miles. a. Is there evidence that the population mean bus miles is more than 3,900 bus miles? (Use a 0.10 level of significance.) State the null and alternative hypotheses. H0: μ ___ _____H1: μ ____ _____ (Type integers or decimals.) Find the test statistic for this hypothesis test. tSTAT=______ (Round to two decimal places as needed.) The critical value(s) for the test statistic is(are) _____ (Round to two decimal places as needed. Use a comma to separate answers as needed.) Is there sufficient evidence to reject the null hypothesis using α=0.10? A. Reject the null hypothesis. There is sufficient evidence at…
A hospital was concerned about reducing its wait time. A targeted wait time goal of 25 minutes was set. After implementing an improvement framework and process, a sample of 364 patients showed the mean wait time was 23.04 minutes, with a standard deviation of 16.14 minutes. Complete parts (a) and (b) below. Question content area bottom Part 1 a. If you test the null hypothesis at the 0.10 level of significance, is there evidence that the population mean wait time is less than 25 minutes? State the null and alternative hypotheses. A. H0: μ<25 H1: μ>25 B. H0: μ≥25 H1: μ<25 C. H0: μ<25 H1: μ≥25 D. H0: μ>25 H1: μ<25 E. H0: μ≠25 H1: μ≥25 F. H0: μ≥25 H1: μ≠25 Part 2 Find the test statistic for this hypothesis test. tSTAT=enter your response here (Type an integer or a decimal. Round to two decimal places as needed.) Part 3 Find the p-value. The p-value is enter your…

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