and what mBq

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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and what mBq
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 0.05 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.
OA. Ho: H1 SH2
H: H1> H2
OC. Ho: H1H2
H4: H1 > H2
O B. Ho: H1 =H2
H: H1# H2
D. Ho: H1=H2
H: H1> H2
The test statistic is. (Round to two decimal places as needed.)
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 0.05 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. OA. Ho: H1 SH2 H: H1> H2 OC. Ho: H1H2 H4: H1 > H2 O B. Ho: H1 =H2 H: H1# H2 D. Ho: H1=H2 H: H1> H2 The test statistic is. (Round to two decimal places as needed.)
More Info
City #1
102
City #2
117
86
63
121
100
117
85
101
83
104
107
213
110
118
111
290
143
100
133
312
101
145
209
Print
Done
Transcribed Image Text:More Info City #1 102 City #2 117 86 63 121 100 117 85 101 83 104 107 213 110 118 111 290 143 100 133 312 101 145 209 Print Done
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