Listed in the data table are amounts of strontium-90 (in millibecquerels, or mBq, per gram of calcium) in a simple random sample of baby teeth obtained from residents in two cities. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. E Click the icon to view the data table of strontium-90 amounts. a. Use a 0.01 significance level to test the claim that the mean amount of strontium-90 from city #1 residents is greater than the mean amount from city #2 residents. What are the null and alternative hypotheses? Assume that population 1 consists of amounts from city #1 levels and population 2 consists of amounts from city #2. OB. Ho: H1 #H2 H,: Hy> H2 O A. Ho: H1= H2 H H #H2 D. Ho H1= H2 OC. Ho: H1S H2 H: H1 > H2 H: H1> H2 The test statistic is (Round to two decimal places as needed.)
Listed in the data table are amounts of strontium-90 (in millibecquerels, or mBq, per gram of calcium) in a simple random sample of baby teeth obtained from residents in two cities. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. E Click the icon to view the data table of strontium-90 amounts. a. Use a 0.01 significance level to test the claim that the mean amount of strontium-90 from city #1 residents is greater than the mean amount from city #2 residents. What are the null and alternative hypotheses? Assume that population 1 consists of amounts from city #1 levels and population 2 consists of amounts from city #2. OB. Ho: H1 #H2 H,: Hy> H2 O A. Ho: H1= H2 H H #H2 D. Ho H1= H2 OC. Ho: H1S H2 H: H1 > H2 H: H1> H2 The test statistic is (Round to two decimal places as needed.)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Question
and what
mBq
Transcribed Image Text:More Info
City #1
City #2
104
117
09
121
112
85
101
84
104
107
213
110
103
111
121
067
133
697
145
101
607
Print
Done
Transcribed Image Text:Listed in the data table are amounts of strontium-90 (in millibecquerels, or mBq, per gram of calcium) in a simple random sample of baby teeth obtained from
residents in two cities. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the
population standard deviations are equal. Complete parts (a) and (b) below.
E Click the icon to view the data table of strontium-90 amounts.
a. Use a 0.01 significance level to test the claim that the mean amount of strontium-90 from city #1 residents is greater than the mean amount from city #2 residents.
What are the null and alternative hypotheses? Assume that population 1 consists of amounts from city #1 levels and population 2 consists of amounts from city #2.
O A. Ho: H1 =H2
H:H1 #H2
OB. Ho: H1 # H2
H,: Hy>H2
D. Ho: H1=H2
OC. Ho: H1 S H2
H:Hy> H2
H:Hq>H2
The test statistic is (Round to two decimal places as needed.)
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