= 12:08 coursehero.com 1 Helpful Search Q C Unhelpful 4G 4 ↑ m page 1 of 4 Key Name Date Statistics Unit 7 Test B In problems 1-6, suppose that the number of coffees a student drinks per week has a mean = 10 coffees with a standard deviation σ = 1.2 coffees. Use the empirical rule (68-95-99.7 Rule) to answer each question. 1. 50% 2.5% 2. 1. What percentage of students drink more than 10 coffees per week? (50% 18.5% 3. .3% 76 88 10 11224 13.6 4. 2. What percentage of students drink less than 7.6 coffees per week? 5. 128 2.5% 3. What percentage of students drink more than 12.4 cups of coffee or less than 8.8 cups of coffee per 6. 585 week? 16% 8.810 124 25 18.5% 4. What percentage of students drink between 6.4 and 13.6 cups of coffee per week? 1-.997 .003 (3%) 5. Suppose that there are 800 students in the school. About how many of them drink more than 11.2 cups of coffee per week? 16% = 800 (16)=128 6. Suppose that there are 600 students in the school. About how many of them drink less than 12.4 cups of coffee per week? 1-.025 = 975 600/975)=(585 < > 5
= 12:08 coursehero.com 1 Helpful Search Q C Unhelpful 4G 4 ↑ m page 1 of 4 Key Name Date Statistics Unit 7 Test B In problems 1-6, suppose that the number of coffees a student drinks per week has a mean = 10 coffees with a standard deviation σ = 1.2 coffees. Use the empirical rule (68-95-99.7 Rule) to answer each question. 1. 50% 2.5% 2. 1. What percentage of students drink more than 10 coffees per week? (50% 18.5% 3. .3% 76 88 10 11224 13.6 4. 2. What percentage of students drink less than 7.6 coffees per week? 5. 128 2.5% 3. What percentage of students drink more than 12.4 cups of coffee or less than 8.8 cups of coffee per 6. 585 week? 16% 8.810 124 25 18.5% 4. What percentage of students drink between 6.4 and 13.6 cups of coffee per week? 1-.997 .003 (3%) 5. Suppose that there are 800 students in the school. About how many of them drink more than 11.2 cups of coffee per week? 16% = 800 (16)=128 6. Suppose that there are 600 students in the school. About how many of them drink less than 12.4 cups of coffee per week? 1-.025 = 975 600/975)=(585 < > 5
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 1GP
Question
![=
12:08
coursehero.com
1 Helpful
Search Q
C
Unhelpful
4G 4
↑
m
page 1
of 4
Key
Name
Date
Statistics
Unit 7 Test B
In problems 1-6, suppose that the number of coffees a student drinks per week
has a mean = 10 coffees with a standard deviation σ = 1.2 coffees. Use the
empirical rule (68-95-99.7 Rule) to answer each question.
1.
50%
2.5%
2.
1. What percentage of students drink more than 10 coffees per week?
(50%
18.5%
3.
.3%
76 88 10 11224 13.6
4.
2. What percentage of students drink less than 7.6 coffees per week?
5.
128
2.5%
3. What percentage of students drink more than 12.4 cups of coffee or less than 8.8 cups of coffee per
6.
585
week? 16%
8.810
124
25
18.5%
4. What percentage of students drink between 6.4 and 13.6 cups of coffee per week?
1-.997 .003 (3%)
5. Suppose that there are 800 students in the school. About how many of them drink more than 11.2
cups of coffee per week?
16% = 800 (16)=128
6. Suppose that there are 600 students in the school. About how many of them drink less than 12.4
cups of coffee per week?
1-.025
=
975
600/975)=(585
<
>
5](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb9bebb65-7a9a-483f-8f2a-730cfc4c58b4%2Fd854ec43-8225-4f62-b960-9124f39b42c5%2F2qgn27_processed.jpeg&w=3840&q=75)
Transcribed Image Text:=
12:08
coursehero.com
1 Helpful
Search Q
C
Unhelpful
4G 4
↑
m
page 1
of 4
Key
Name
Date
Statistics
Unit 7 Test B
In problems 1-6, suppose that the number of coffees a student drinks per week
has a mean = 10 coffees with a standard deviation σ = 1.2 coffees. Use the
empirical rule (68-95-99.7 Rule) to answer each question.
1.
50%
2.5%
2.
1. What percentage of students drink more than 10 coffees per week?
(50%
18.5%
3.
.3%
76 88 10 11224 13.6
4.
2. What percentage of students drink less than 7.6 coffees per week?
5.
128
2.5%
3. What percentage of students drink more than 12.4 cups of coffee or less than 8.8 cups of coffee per
6.
585
week? 16%
8.810
124
25
18.5%
4. What percentage of students drink between 6.4 and 13.6 cups of coffee per week?
1-.997 .003 (3%)
5. Suppose that there are 800 students in the school. About how many of them drink more than 11.2
cups of coffee per week?
16% = 800 (16)=128
6. Suppose that there are 600 students in the school. About how many of them drink less than 12.4
cups of coffee per week?
1-.025
=
975
600/975)=(585
<
>
5
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