The standard deviation in the pressure required to open a certain valve is known to be a = 0.9 psi. Due to changes in the manufacturing process, the quality-control manager feels that the pressure variability has increased. (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 Il error. (a) State the null hypothesis in words. Choose the correct answer below. OA. The standard deviation in the pressure required to open a certain valve is 0.9 psi. OB. The standard deviation in the pressure required to open a certain valve is greater than 0.9 psi. OC. The standard deviation in the pressure required to open any valve is 0.9 psi. D. The standard deviation in the pressure required to open a certain valve is different from 0.9 psi. State the alternative hypothesis in words. Choose the correct answer below. OA. The standard deviation in the pressure required to open any valve is 0.9 psi. OB. The standard deviation in the pressure required to open a certain valve is greater than 0.9 psi. OC. The standard deviation in the pressure required to open a certain valve is 0.9 psi. OD. The standard deviation in the pressure required to open a certain valve is different from 0.9 psi. (b) State the hypotheses symbolically. Ho: ▼ ▼psi H₁: ▼ psi (Type integers or decimals. Do not round.) (c) What would it mean to make a Type I error? The manager the hypothesis that the pressure variability is (Type integers or decimals. Do not round.) psi, when the true pressure variability is psi.
The standard deviation in the pressure required to open a certain valve is known to be a = 0.9 psi. Due to changes in the manufacturing process, the quality-control manager feels that the pressure variability has increased. (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 Il error. (a) State the null hypothesis in words. Choose the correct answer below. OA. The standard deviation in the pressure required to open a certain valve is 0.9 psi. OB. The standard deviation in the pressure required to open a certain valve is greater than 0.9 psi. OC. The standard deviation in the pressure required to open any valve is 0.9 psi. D. The standard deviation in the pressure required to open a certain valve is different from 0.9 psi. State the alternative hypothesis in words. Choose the correct answer below. OA. The standard deviation in the pressure required to open any valve is 0.9 psi. OB. The standard deviation in the pressure required to open a certain valve is greater than 0.9 psi. OC. The standard deviation in the pressure required to open a certain valve is 0.9 psi. OD. The standard deviation in the pressure required to open a certain valve is different from 0.9 psi. (b) State the hypotheses symbolically. Ho: ▼ ▼psi H₁: ▼ psi (Type integers or decimals. Do not round.) (c) What would it mean to make a Type I error? The manager the hypothesis that the pressure variability is (Type integers or decimals. Do not round.) psi, when the true pressure variability is psi.
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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![The standard deviation in the pressure required to open a certain valve is known to be σ = 0.9 psi. Due to changes in the manufacturing process, the quality-control manager feels that the pressure variability has increased.
(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 a certain valve is 0.9 psi.
- ○ B. The standard deviation in the pressure required to open a certain valve is greater than 0.9 psi.
- ○ C. The standard deviation in the pressure required to open any valve is 0.9 psi.
- ○ D. The standard deviation in the pressure required to open a certain valve is different from 0.9 psi.
State the alternative hypothesis in words. Choose the correct answer below.
- ○ A. The standard deviation in the pressure required to open any valve is 0.9 psi.
- ○ B. The standard deviation in the pressure required to open a certain valve is greater than 0.9 psi.
- ○ C. The standard deviation in the pressure required to open a certain valve is 0.9 psi.
- ○ D. The standard deviation in the pressure required to open a certain valve is different from 0.9 psi.
(b) State the hypotheses symbolically.
- \( H_0: \sigma = \) [ ] psi
- \( H_1: \sigma > \) [ ] psi
(Type integers or decimals. Do not round.)
(c) What would it mean to make a Type I error?
The manager [ ] the hypothesis that the pressure variability is [ ] psi, when the true pressure variability is [ ] psi.
(Type integers or decimals. Do not round.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fac3be618-b645-4bd8-855b-808ff3fc18d4%2F5c180bf6-2eea-48a9-8374-b6c66083ab32%2Fzf1hge_processed.png&w=3840&q=75)
Transcribed Image Text:The standard deviation in the pressure required to open a certain valve is known to be σ = 0.9 psi. Due to changes in the manufacturing process, the quality-control manager feels that the pressure variability has increased.
(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 a certain valve is 0.9 psi.
- ○ B. The standard deviation in the pressure required to open a certain valve is greater than 0.9 psi.
- ○ C. The standard deviation in the pressure required to open any valve is 0.9 psi.
- ○ D. The standard deviation in the pressure required to open a certain valve is different from 0.9 psi.
State the alternative hypothesis in words. Choose the correct answer below.
- ○ A. The standard deviation in the pressure required to open any valve is 0.9 psi.
- ○ B. The standard deviation in the pressure required to open a certain valve is greater than 0.9 psi.
- ○ C. The standard deviation in the pressure required to open a certain valve is 0.9 psi.
- ○ D. The standard deviation in the pressure required to open a certain valve is different from 0.9 psi.
(b) State the hypotheses symbolically.
- \( H_0: \sigma = \) [ ] psi
- \( H_1: \sigma > \) [ ] psi
(Type integers or decimals. Do not round.)
(c) What would it mean to make a Type I error?
The manager [ ] the hypothesis that the pressure variability is [ ] psi, when the true pressure variability is [ ] psi.
(Type integers or decimals. Do not round.)
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