An automobile assembly line operation has a scheduled mean completion time, µ, of 14.4 minutes. The standard deviation of completion times is 1.3 minutes. Itis claimed that, under new management, the mean completion time has decreased. To test this claim, a random sample of 10 completion times under newmanagement was taken. The sample had a mean of 13.4 minutes. Assume that the population is normally distributed. Can we support, at the 0.05 level ofsignificance, the claim that the mean completion time has decreased under new management? Assume that the standard deviation of completion times has notchanged.Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places, and round your responses as specified below. (If necessary, consult a list of formulas.)(a) State the null hypothesis H, and the alternative hypothesis H .pH, :0H1 :0(b) Determine the type of test statistic to use.(Choose one) ▼O=0OSO(c) Find the value of the test statistic. (Round to three or more decimal places.)(d) Find the critical value. (Round to three or more decimal places.)(e) Can we support the claim that the mean completion time has decreasedunder new management?O Yes ONoIx

Name: An automobile assembly line operation has a scheduled mean completion
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: An automobile assembly line operation has a scheduled mean completion time, µ, of 14.4 minutes. The standard deviation of completion times is 1.3 minutes. Itis claimed that, under new management, the mean completion time has decreased. To test this

mean = 14.4 standard deviation = 1.3 sample mean = 13.4 n=10 a) H0 : μ = 14.4 H1: μ<14.4 b)…

Math

Statistics

sembi operat nas a sc is claimed that, under new management, the m management was taken. The sample had a mea significance, the claim that the mean completion changed. Perform a one-tailed test. Then complete the pa Carry your intermediate computations to three |(a) State the null hypothesis H, and the alter

sembi operat nas a sc is claimed that, under new management, the m management was taken. The sample had a mea significance, the claim that the mean completion changed. Perform a one-tailed test. Then complete the pa Carry your intermediate computations to three |(a) State the null hypothesis H, and the alter

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

plz explain the following. Thanks
17. A student did not believe their teacher when they stated that students tend to make more mistakes on their homework when listening to music. The students gave 30 participants two tasks: one task was given while the participant performed simple math problems and gave a similar, but different set of math problems when not listening to music. The following is the mean of the difference scores for the two tasks MD=4 and an SEM=1.3 a. State the null and alternative hypothesesb. Perform a paired samples t test with the descriptive statisticsc. Is there a significant difference between the two conditions? Test using an alpha level of .05, using the direction of the test that is listed in the question. Use APA format in answering question.
Which of the following statements about the False Discovery Rate (FDR) is correct? The FDR is the only method available for controlling multiple testing error in transcriptional profiling data The FDR cutoff value should be held to the same standard as the p-value cutoff when doing hypothesis testing The FDR can be interpreted as meaning “the proportion of the significant gene list one would expect to find significant by chance due to the multiple testing error” The FDR greatly simplifies analysis, allowing researchers to add many more treatment groups to their experimental designs Its best to save your signal intensity data before calculating the FDR, as the FDR calculation will change the signal values for all of your data
did a science fair could sense her field She foped a When she was 9 years of age, a in which she tested professional touch therapists to see if con to select either her right hand or her left hand, and then she asked the therapists to identity the selected hand by placing their hand just under her hand without seeing a and without touching it. Among 243 trials, the touch therapists were correct 103 times. Use a 0.05 significance level to test the claim that touch therapists use a method equivalent to random guesses. Do the results suggest that touch therapists are effective? Identity the test statistic (Round to two decimal places as needed) Identify the P-value (Round to three decimal places as needed) State the conclusion about the null hypothesis, as well as the final conclusion that addresses the original claim. Address whether the results suggest that touch the The results GUID the null hypothesis. There sufficient evidence to that touch therapists are effective the claim that…
07 A statistics professor wants to determine whether the average grade on Assignment 1 differs significantly from 23 (A average). a) State the null and alternative hypotheses. b) Based on the t-test in the following table 1, make a decision regarding the null hypotheses. c) Explain the results observed in (b). assign1 assign1 t -4.944 N dif 15 14 Mean 21.0333 Std. Deviation 1.54072 Test Value = 23 Mean Sig. (2-tailed) Difference .000 -1.96667 Table 1: T-test Std. Error Mean 39781 95% Confidence Interval of the Difference Lower Upper -2.8199 -1.1134
Assume that matched pairs of data from a poll of Internet users who were asked if they make travel plans through the Internet result in 373 positive signs, 333 negative signs, and 22 ties when the value of the second variable is subtracted from the corresponding value of the first variable. Use the sign test with a 0.10 significance level to test the null hypothesis of no difference. Let ₁ denote the median of the first variable and 12 denote the median of the second variable. Wha are the null and alternative hypotheses? A. Ho: 1₁ #1₂ H₁:1₁ =11₂ C. Ho: 1₁ =1₂ H₁:1₁ <1₂ Find the test statistic. Test statistic = needed.) OB. Ho: 1₁ 2112 H₁:1₁ <1₂ D. Ho: 1₁ =112 H₁:1₁ #1₂ (Round to two decimal places as
What is the mean population?
Researchers collected data on the numbers of hospital admissions resulting from motor vehicle crashes, and results are given below for Fridays on the 6th of a month and Fridays on the following 13th of the same month. Use a 0.05 significance level to test the claim that when the 13th day of a month falls on a Friday, the numbers of hospital admissions from motor vehicle crashes are not affected.
18. A credit card company claims that the mean time the customers spend on hold is 3.5 minutes. An employee of this company believes that customers spend more than 3.5 minutes on hold. A random sample of n = 36 calls is selected and the mean time the customers in this sample spent on hold was 5.15 minutes. All conditions for inference were met and the p-value for the appropriate hypothesis test was 0.031. Which of the following statements is the best interpretation of the p-value? (A) There is a 0.031 probability that the alternative hypothesis is true. (B) There is a 0.031 probability that the null hypothesis is true. (C) If the null hypothesis is true, there is a 0.031 probability of finding convincing evidence that 5.15 minutes is greater than 3.5 minutes. (D) If the null hypothesis is true, the probability of finding convincing evidence that the null hypothesis is true is 0.031. (E) If the null hypothesis is true, the probability of observing a sample mean of at least 5.15 minutes…
A local chess club claims that the length of time to play a game has a mean of 23 minutes or more. Write sentences describing type I and type II errors for a hypothesis test of this claim. A type I error will occur if the actual mean of the length of time to play a game is ▼ less than equal to less than or equal to greater than not equal to greater than or equal to 23 minutes, but you ▼ fail to reject reject the null hypothesis, ▼ Upper H 0 : mu less than 23H0: μ<23 Upper H 0 : mu equals 23H0: μ=23 Upper H 0 : mu not equals 23H0: μ≠23 Upper H 0 : mu less than or equals 23H0: μ≤23 Upper H 0 : mu greater than or equals 23H0: μ≥23 Upper H 0 : mu greater than 23H0: μ>23 . A type II error will occur if the actual mean of the length of time to play a game is ▼ not equal to greater than or equal to equal to greater than less than or equal to less than 23 minutes, but you ▼ fail to reject reject the null hypothesis, ▼…
I really need help with these problems
which of the following statements is true if when using null hypothesis testing, our p value (in the sig column of spss output) is 0.069? -reject the null hypothesis -daily to reject the null hypothesis -reject the alternative hypothesis -fail to reject the alternative hypothesis