Energy Cost Family ID 1 Family energy cost data 211 1 An economist wants to determine whether the monthly energy cost for families has changed from the previous year, when the mean cost per month was $200. The economist randomly samples 25 families and records their energy costs for the current year. Has the energy cost changed significantly since last 572 2 558 3 250 4 478 5 year? 307 184 435 460 308 10 188 11 111 12 676 13 326 14 142 15 255 16 205 17 77 18 190 19 320 20 407 21 333 22 488 23 374 24 409 25 67

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 19SGR
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Question
Energy Cost Family ID
1 Family energy cost data
211
1.
An economist wants to determine whether the monthly energy cost for families has changed from the
previous year, when the mean cost per month was $200. The economist randomly samples 25 families
572
558
3
250
4
and records their energy costs for the current year. Has the energy cost changed significantly since last
5
year?
478
307
184
7
435
8
460
308
10
188
11
111
12
676
13
326
14
142
15
255
16
205
17
77
18
190
19
320
20
407
21
333
22
488
23
374
24
409
25
Transcribed Image Text:Energy Cost Family ID 1 Family energy cost data 211 1. An economist wants to determine whether the monthly energy cost for families has changed from the previous year, when the mean cost per month was $200. The economist randomly samples 25 families 572 558 3 250 4 and records their energy costs for the current year. Has the energy cost changed significantly since last 5 year? 478 307 184 7 435 8 460 308 10 188 11 111 12 676 13 326 14 142 15 255 16 205 17 77 18 190 19 320 20 407 21 333 22 488 23 374 24 409 25
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