The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient temperature (in °F) for that month. The past year's usage and temperatures are in the following table: Month Temp. Usage/1000 Jan. 21 185.79 Feb. 24 214.47 Mar. 32 288.03 Apr. 47 424.84 May 50 454.58 June 59 539.03 July 68 621.55 Aug. 74 675.06 Sept. 62 562.03 Oct. 50 452.93 Nov. 41 369.95 Dec. 30 273.98 (c) Find a 95% confidence interval on mean steam usage when the average temperature is 57°F. Round your answers to one decimal place (e.g. 98.7).
The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient temperature (in °F) for that month. The past year's usage and temperatures are in the following table: Month Temp. Usage/1000 Jan. 21 185.79 Feb. 24 214.47 Mar. 32 288.03 Apr. 47 424.84 May 50 454.58 June 59 539.03 July 68 621.55 Aug. 74 675.06 Sept. 62 562.03 Oct. 50 452.93 Nov. 41 369.95 Dec. 30 273.98 (c) Find a 95% confidence interval on mean steam usage when the average temperature is 57°F. Round your answers to one decimal place (e.g. 98.7).
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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19.
The number of pounds of steam used per month by a chemical plant is thought to be related to the average ambient temperature (in °F) for that month. The past year's usage and temperatures are in the following table:
| Month | Temp. | Usage/1000 |
|---|---|---|
| Jan. | 21 | 185.79 |
| Feb. | 24 | 214.47 |
| Mar. | 32 | 288.03 |
| Apr. | 47 | 424.84 |
| May | 50 | 454.58 |
| June | 59 | 539.03 |
| July | 68 | 621.55 |
| Aug. | 74 | 675.06 |
| Sept. | 62 | 562.03 |
| Oct. | 50 | 452.93 |
| Nov. | 41 | 369.95 |
| Dec. | 30 | 273.98 |
(c) Find a 95% confidence interval on mean steam usage when the average temperature is 57°F.
Round your answers to one decimal place (e.g. 98.7).
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