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 standarddeviation 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< 25O C. Ho: μ2 25Ο Α. Ho μ> 25H1: µ< 25H1: µ> 25H1: µ< 25Ο D . H : μ# 25H,: µ2 25Ο Ε. Ho: μ < 25H,: µ2 25O F. Ho: µ2 25H,: µ# 25Find 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.) Is there sufficient evidence to reject the null hypothesis? (Use a 0.10 level of significance.)O A. 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.B. 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.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 minutes.O 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 below.O A. The p-value is the probability of getting a sample mean wait time of 23.05 minutes or less if the actual mean wait time is 25 minutes.B. The p-value is the probability that the actual mean wait time is more than 23.05 minutes.O C. The p-value is the probability that the actual mean wait time is 25 minutes given the sample mean wait time is 23.05 minutes.O D. The p-value is the probability that the actual mean wait time is 23.05 minutes or less.

Name: A hospital was concerned about reducing its wait time. A targeted wai
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: 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 standarddev

From the provided information, Sample size (n) = 325 Sample mean (x̅) = 23.05 Sample standard…

Math

Statistics

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, there evidence that the population mean wait time less than 25 minutes? State the null and alternative hypotheses. OC. Ho: u2 25 H,: u<25 O A. Ho: u> 25 O B. Ho: u< 25 H: > 25 H: u< 25 O D. Ho: u# 25 H, u2 25 Ο Ε. Ho μ< 25 H, u2 25 OF. Ho: 2 25 H,: u# 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 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, there evidence that the population mean wait time less than 25 minutes? State the null and alternative hypotheses. OC. Ho: u2 25 H,: u<25 O A. Ho: u> 25 O B. Ho: u< 25 H: > 25 H: u< 25 O D. Ho: u# 25 H, u2 25 Ο Ε. Ho μ< 25 H, u2 25 OF. Ho: 2 25 H,: u# 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.)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

A bank wonders whether omitting the annual credit card fee for customers who charge at least $3000 in a year will increase the amount charged on its credit cards. The bank makes this offer to an SRS of 400 of its credit card customers. It then compares how much these customers charge this year with the amount that they charged last year. The mean increase in the sample is $246, and the standard deviation is $112. Is there significant evidence at the 1% level that the mean amount charged increases under the no-fee offer? State H0 and Ha and carry out a significance test.
According to Dietary Goals for the US (1977), high sodium intake may be related to ulcers, stomach cancer, and migraine headaches. The human requirement for salt is less than 220 milligrams per day, which is surpassed in most single servings of ready-to-eat noodles. If a random sample of 9 similar servings of noodles has a mean sodium content of 214 milligrams and a standard deviation of 7.5. What is the standard error of the 95% confidence interval of the mean sodium content of the noodles being investigated? Note: Round your answer to 4 decimal places.
In an effort to reduce energy costs, and major university has installed more efficient lights as well as automatic sensors that turn the lights off when no movement is present in a room. Historically, the cost of lighting an average classroom for one week has been $265. To determine whether that change has significantly reduced cost, the university takes a sample of 50 classrooms. They find that the average cost for one week is $247 with the standard deviation of $60. When testing whether the average energy use has decreased from the past (with a null hypothesis that the use has increased) (using the 5% level of significance), what is the P value? **please round your answer to four decimal places**
Allstate Batteries advertises and sells a 4 year (48 1 Consumer Digest, a consumer advocacy organization have been receiving months ) battery . You work at complaints from consumers who felt they were not receiving their full 48 months . Test Allstate's claim that these are 48 month batteries at the 5% level of significance . You have tested a sample of 36 cars and found a mean of 45months and a standard deviation of 1 month . State the appropriate hypotheses from the consumers ' point of view , show drawing and appropriate critical value , compute the appropriate test statistic , accept (fail to reject)/rei reject the null hypothesis and draw conclusion . Do you believe the batteries are as advertised ?
Students took a college math placement exam with a mean of 200 and a standard deviation of 12. Using the Empirical Rule, approximately, what percent of the students scored above 224?
The time needed for students to complete a paper and pencil maze is normally distributed with a mean of 45 seconds and standard deviation of 5 seconds. You wish to see if the mean completion time is decreased by vigorous exercise. You will have a group of 10 students exercise vigorously for thirty minutes and then complete the maze and test your hypothesis at the 1% significance level. a. Suppose you observe a mean time of 41.7 seconds. What is your conclusion regarding the true average time necessary to complete this maze. What are the null and alternative hypothesis for your test? a.μ > 45, μ <= 45 b.μ >= 45, μ < 45 c.μ <= 45, μ > 45 d. μ == 45, μ =/= 45 b. What is the p-value, significance, level and conclusion of your test? c. What is the power of your test against the one-sided alternative value of 40 seconds?
2 The FCC conducts broadband speed tests to measure how much data per second passes between a consumer's computer and the internet. As of August of 2012, the standard deviation of Internet speeds across Internet Service Providers (ISPS) was 12.2 percent. Suppose a sample of 15 ISPS is taken, and the standard deviation is 13.2. An analyst claims that the standard deviation of speeds is more than what was reported. State the null and alternative hypotheses, compute the degrees of freedom, the test statistic, sketch the graph of the p-value, and draw a conclusion. Test at the 1% significance level.
I need help with a., b., c., and d.
A polling organization reported data from a survey of 2000 randomly selected Canadians who carry debit cards. Participants in this survey were asked what they considered the minimum purchase amount for which it would be acceptable to use a debit card. Suppose that the sample mean and standard deviation were $9.14 and $7.70, respectively. (These values are consistent with a histogram of the sample data that appears in the report.)Do these data provide convincing evidence that the mean minimum purchase amount for which Canadians consider the use of a debit card to be appropriate is less than $10? Carry out a hypothesis test with a significance level of 0.01. (Use a statistical computer package to calculate the P-value. Round your test statistic to two decimal places and your P-value to four decimal places.) t = P-value = State your conclusion. Reject H0. We do not have convincing evidence that the mean minimum purchase amount for which Canadians consider it…
Almost all medical schools in the United States require applicants to take the Medical College Admission Test (MCAT). On one exam, the scores of all applicants on the biological sciences part of the MCAT were approximately Normal with mean 9.5 and standard deviation 2.4. For applicants who actually entered medical school, the mean score was 10.8 and the standard deviation was 1.8. (a) What percent of all applicants had scores higher than 11? ANSWER: % (b) What percent of those who entered medical school had scores between 9 and 12? ANSWER: %
Two species of fish have similar phenotypes to each other, researchers wonder if they can classify these fish species based on their sizes. One species has mean size of 10cm, with standard deviation of 1. The other species has mean size of 12cm, with standard deviation of 2. Size of 15 fish from each species were measured. a. Which hypothesis testing method can be used to compare the mean size of the two populations? Perform the test for a = 0.01. How does result of this test help the researchers to decide if they can classify these fish species based on their sizes? b. What is the power of the test? How does power of the test help the researchers to decide if they can classify these fish species based on their sizes?
In a study entitled How Undergraduate Students Use Credit Cards, Sallie Mae reported that undergraduate students have a mean credit card balance of $3,173. This figure was an all-time high and had increased 44% over the previous five years. Assume that a current study is being conducted to determine whether it can be concluded that the mean credit card balance for undergraduate students has continued to increase compared to the April 2009 report. Based on previous studies, use a population standard deviation σ = $1,000.For a sample of 180 undergraduate students with a sample mean credit card balance of $3,325, using a 0.05 level of significance, what is your conclusion?