تم الحل ✓
categoryإحصاء
schoolبكالوريوس
event_available2026-07-15
السؤال
Transcribed Image Text:
7.3.11
Question Help
In an advertising campaign, a snack company claimed that every 18-ounce bag of its cookies contained at
least 1000 chocolate chips. Two statisticians attempted to verify the claim. The accompanying data represent
the number of chips in an 18-ounce bag of the company's cookies based on their study. Complete parts (a)
through (e).
Click here to view the chocolate chip data table.
Click here to view the standard normal distribution table (page 1).
Click here to view the standard normal distribution table (page 2).
Observed
value
Observed
value
Observed
value
Observed
value
E
1000 1400 1800 2200
900 1200 1500 1800
600 1000 1400 1800
900 1200 1500 1800
(d) Using the normal model from part (c), find the probability that an 18-ounce bag of chips selected at
random contains at least 1000 chips.
The probability is 0.993.
(Round to three decimal places as needed.)
(e) Using the normal model from part (c), find the probability that an 18-ounce bag of chips selected at
random contains between 1200 and 1300 chips.
The probability is
☐
(Round to three decimal places as needed.)
Enter your answer in the answer box and then click Check Answer.
?
i
Chocolate Chip Data Table
- X
1089
1153
1217
1271
1349
1098
1167
1217
1272
1358
1106
1188
1218
1275
1363
1118
1189
1223
1289
1373
1131
1202
1244
1289
1397
1131
1205
1246
1292
1418
1138
1210
1248
1309
1441
1148
1217
1254
1328
1517
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