The piston diameter of a certain hand pump is 0.4 inch. The manager determines that the djameters are normally distributed, with a mean of 0.4 inch and a standard deviation of 0.007 inch. After recalibrating the production machine, the manager randomly sblects 29 pistons and determines that the standard deviation is 0.0062 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a= 0.01 level of significance? What are the correct hypotheses for this test? The null hypothesis is Ho: The alternative hypothesis is H,: Calculate the value of the test statistic. x2 = (Round to three decimal places as needed.) %3D Use technology to determine the P-value for the test statistic. The P-value is (Round to three decimal places as needed.) What is the correct conclusion at the a = 0.01 level of significance? Since the P-value is V than the level of significance, V the null hypothesis. There V sufficient evidence to conclude that the standard deviation has decreased at the 0.01 level of significance.

The piston diameter of a certain hand pump is 0.4 inch. The manager determines that the djameters are normally distributed, with a mean of 0.4 inch and a standard deviation of 0.007 inch. After recalibrating the production machine, the manager randomly sblects 29 pistons and determines that the standard deviation is 0.0062 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a= 0.01 level of significance? What are the correct hypotheses for this test? The null hypothesis is Ho: The alternative hypothesis is H,: Calculate the value of the test statistic. x2 = (Round to three decimal places as needed.) %3D Use technology to determine the P-value for the test statistic. The P-value is (Round to three decimal places as needed.) What is the correct conclusion at the a = 0.01 level of significance? Since the P-value is V than the level of significance, V the null hypothesis. There V sufficient evidence to conclude that the standard deviation has decreased at the 0.01 level of significance.

Name: The piston diameter of a certain hand pump is 0.4 inch. The manager d
Uploaded: 2024-03-20T07:07:12.000Z
Channel: Bartleby
Description: The piston diameter of a certain hand pump is 0.4 inch. The manager determines that the diameters are normally distributed, with a mean of 0.4 inch and a standarddeviation of 0.007 inch. After recalibrating the production machine, the manager random

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

The piston diameter of a certain hand pump is 3 inch. The manager determines that the diameters are normally distributed, with a mean of 0.3 inch and a standard deviation of 0.003 inch. After recalibrating the production machine, the manager randomly selects 24 pistons and determines that the standard deviation is 0.0027 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a=0.10 level of significance? The Hypotheses Test Ho:o = 0.003 H1:0 0.003 ( Choose one the following: a for =, b for >, c for <, d for ) Test statistic X2 (Round to two decimal places.) P value = (Round to three decimal places.) Conclusion: (Choose: R for Reject or F for Fail to reject)
The piston diameter of a certain hand pump is 0.7 inch. The manager determines that the diameters are normally distributed, with a mean of 0.7 inch and a standard deviation of 0.003 inch. After recalibrating the production machine, the manager randomly selects 25 pistons and determines that the standard deviation is 0.0026 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a=0.10 level of significance? What are the correct hypotheses for this test? The null hypothesis is H₂: = 0.003. The alternative hypothesis is H₁: Calculate the value of the test statistic. 6 n example X = (Round to two decimal places as needed.) D 0.003. Get more help - # Clear all
A study showed that females’ body temperatures are approximately normally distributed with a mean of 98.40F, and a population standard deviation of 0.700F. Find the female body temperature at the 90th percentile.
The piston diameter of a certain hand pump is 0.8 inch. The manager determines that the diameters are normally distributed, with a mean of 0.8 inch and a standard deviation of 0.004 inch. After recalibrating the production machine, the manager randomly selects 29 pistons and determines that the standard deviation is 0.0035 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a=0.10 level of significance? What are the correct hypotheses for this test? The null hypothesis is Ho: The alternative hypothesis is H,: Calculate the value of the test statistic. x= (Round to three decimal places as needed.) Use technology to determine the P-value for the test statistic. The P-value is. (Round to three decimal places as needed.) What is the correct conclusion at the a= 0.10 level of significance? Since the P-value is than the level of significance, V the null hypothesis. There V sufficient evidence to conclude that the standard deviation…
Based on a recent study, the pH level of the arterial cord (one vessel in the umbilical cord) is normally distributed with mean 7.27and standard deviation of 0.11. Find the percentage of preterm infants who have the following arterial cord pH levels. a. pH levels between 7.00 and 7.50. b. pH levels over 7.35. a. The percentage of arterial cord pH levels that are between 7.00and 7.50 is __________%. (Round to two decimal places as needed.) b. The percentage of arterial cord pH levels that are over 7.35 is _______%. (Round to two decimal places as needed.)
The piston diameter of a certain hand pump is 0.4 inch. The manager determines that the diameters are normally distributed, with a mean of 0.4 inch and a standard deviation of 0.007 inch. After recalibrating the production machine, the manager randomly selects 23 pistons and determines that the standard deviation is 0.0051 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a= 0.01 level of significance? x2 = (Round to three decimal places as needed.) Use technology to determine the P-value for the test statistic. The P-value is (Round to three decimal places as needed.) Enter your answer in each of the answer boxes: OVi 11:54 hp esc DII %23 %24 96 backspac 6 e r t f k a m alt ctri alt Op USE YOUR S Revlews Sp
The piston diameter of a certain hand pump is 0.4 inch. The manager determines that the diameters are normally distributed, with a mean of 0.4 inch and a standard deviation of 0.003 inch. After recalibrating the production machine, the manager randomly selects 28 pistons and determines that the standard deviation is 0.0027 inch. Is there significant evidence for the manager to conclude that the standard deviation has decreased at the a= 0.10 level of significance? What are the correct hypotheses for this test? The null hypothesis is H₂: 0 M The alternative hypothesis is H₁: Calculate the value of the test statistic. x² = (Round to three decimal places as needed.) Use technology to determine the P-value for the test statistic. The P-value is (Round to three decimal places as needed.) What is the correct conclusion at the α = 0.10 level of significance? Since the P-value is than the level of significance, the null hypothesis. There C sufficient evidence to conclude that the standard…
The distribution of the student heights at a large college is approximately bell shaped. If the mean height is 66 inches,and approximately 95% of the heights fall between 32 and 100 inches, then, the standard deviation of the heightdistribution is approximately equal to
In a certain country the heights of adult men are normally distributed with a mean of 70.2 inches and a standard deviation of 2.7 inches. The country's military requires that men have heights between 66 inches and 79 inches. Determine what percentage of this country's men are eligible for the military based on height. The percentage of men that are eligible for the military based on height is nothing%. (Round to two decimal places as needed.)
The physical plant at the main campus of a large state university recieves daily requests to replace florecent lightbulbs. The distribution of the number of daily requests is bell-shaped and has a mean of 62 and a standard deviation of 4. Using the empirical rule (as presented in the book), what is the approximate percentage of lightbulb replacement requests numbering between 58 and 62?ans = %
The population mean of a company's racing bicycles is 9.07 kg (20.0 1b) with a population standard deviation of 0.40 kg. If the distribution is approximately normal, determine (a) the percentage of bicycles less than 8.30 kg, (b) the percentage of bicycles greater than 10.00 kg, and (c) the percentage of bicycles between 8.00 and 10.10 kg.
An Internet provider has analyzed the amount of time it’s customers are online per session. It found that the distribution of connect times has a mean a 43 minutes and a standard deviation of 10 minutes. For this distribution find the raw score that corresponds to a z score of 1.1