The standard deviation in the pressure required to open a certain valve is known to be σ = 1.2 psi. Due to changes in the manufacturing process, the quality-control manager feels that the pressure variability has increased.(a) Determine the null and alternative hypotheses.(b) Explain what it would mean to make a Type I error.(c) Explain what it would mean to make a Type II error.---(a) State the hypotheses.H₀: [Select box for input] [Select box for input] [Input box for number]H₁: [Select box for input] [Select box for input] [Input box for number](Type integers or decimals. Do not round.)---This section provides input areas to define the null hypothesis (H₀) and the alternative hypothesis (H₁) regarding the standard deviation with drop-down and input boxes to fill numerical values.

Null and alternative hypothesis : Null hypothesis : In statistics, null hypothesis is a statement…

Answered: The standard deviation in the pressure…

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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Directions: Determine the parameter to be tested in the given problems below. 1. An electric lamps manufacturer is testing a new method of producing lamps that will be considered acceptable in a normal population with an average life of 2,600 hours and a standard deviation equal to 350. A sample of 80 lamps produced by this method has an average life of 2,630 hours. Can the hypothesis of validity for the new manufacturing process be accepted with a risk equal to or less than 5%? 2. A car dealer claims that the average price of Honda Vios is at least ₱662,000.00. A client suspected that the claim is incorrect and found that random sample of 15 similar vehicles has the mean price of ₱640,000.00 and standard deviation of ₱ 24,000.00. Is there enough evidence to reject the dealer’s claim at ? = 0.05?
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The standard deviation in the pressure required to open a certain valve is known to be o = 0.8 psi. Due to changes in the manufacturing process, the quality-control manager feels that the pressure variability has been reduced. (a) State the null and alternative hypotheses in words. (b) State the null and alternative hypotheses symbolically. (c) Explain what it would mean to make a Type I error. (d) Explain what it would mean to make a Type II error. (a) State the null hypothesis in words. Choose the correct answer below. A. The standard deviation in the pressure required to open any valve is 0.8 psi. B. The standard deviation in the pressure required to open a certain valve is different from 0.8 psi. C. The standard deviation in the pressure required to open a certain valve is greater than 0.8 psi. D. The standard deviation in the pressure required to open a certain valve is 0.8 psi. State the alternative hypothesis in words. Choose the correct answer below. O A. The standard deviation…
In a simulation project, the time (in minutes) between arrivals of customers to a post office is to be modelled. The team collected the arrival data of 200 customers and arranged it to perform a x² goodness- of-fit test in the table below. They checked the histogram of the data and thought that the distribution should be Normal with the estimated mean value T = 124 min and standard deviation s = 15.50 min. Calculate and fill the missing entries in the table (Assume k = 8). Interval E₁ -00 X <106.170 25.00 31 106.170 X 112.1 19.31 28 112.1X118.0 26.00 24 30.00 28 30.00 38 26.00 28 19.00 118.CX 124.C 124.C < X < 129.9 129.9 X 135.8 135.8 X 141.830 141.830 X ∞ Oi The test statistic is X= <= 18.70 25.00 11 X² The critical value is X3.03.df 12.37 The p-value for the test is p-value = 1.44 4.26 0.15 2.13 0.15 12 2.58 0.13 7.84

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