Independent random samples from normal populations produced the results shown in the table to the right. Assume that the population variances are equal. Complete parts a through d below. a. Calculate the pooled estimate of o². (Round to four decimal places as needed.) b. Do the data provide sufficient evidence to indicate that μ₂ > μ₁? Test using a = 0.10. What are the null and alternative hypotheses? OA. Ho: H₁-H₂ = 0.10 Hai Hq - Hz20.10 OC. Ho: H₁-H₂=0 Hai H-Hz<0 What is the test statistic? XXXB t= (Round to two decimal places as needed.) OB. Ho: H₁ H₂= 0.10 Hai H-H250.10 O D. Ho: H - Uz=0 HaiH-Hz>0 Sample 1 1.3 2.9 1.6 2.9 2.8 Sample 2 4.4 2.6 3.8 4.1

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Independent random samples from normal populations produced the results shown in the table to the right.
Assume that the population variances are equal. Complete parts a through d below.
a. Calculate the pooled estimate of o².
2
S. =
(Round to four decimal places as needed.)
b. Do the data provide sufficient evidence to indicate that μ₂ > μ₁? Test using α = 0.10.
What are the null and alternative hypotheses?
OA. Ho: H₁-H₂ = 0.10
Hai H- Hy 20.10
OC. Ho: H₁-H₂=0
Ha H-Hz<0
What is the test statistic?
t=7
(Round to two decimal places as needed.)
LAIL
LL
In
C I'
√₁
OB. Ho: H₁
OD. Ho: H₁-H₂=0
Ha: H1 H₂>0
Ş
H₂ = 0.10
Ha: H - Hz≤0.10
Vi
(1,0)
Sample 1
1.3
2.9
1.6
2.9
2.8
More
Sample 2
4.4
2.6
3.8
4.1
Transcribed Image Text:Independent random samples from normal populations produced the results shown in the table to the right. Assume that the population variances are equal. Complete parts a through d below. a. Calculate the pooled estimate of o². 2 S. = (Round to four decimal places as needed.) b. Do the data provide sufficient evidence to indicate that μ₂ > μ₁? Test using α = 0.10. What are the null and alternative hypotheses? OA. Ho: H₁-H₂ = 0.10 Hai H- Hy 20.10 OC. Ho: H₁-H₂=0 Ha H-Hz<0 What is the test statistic? t=7 (Round to two decimal places as needed.) LAIL LL In C I' √₁ OB. Ho: H₁ OD. Ho: H₁-H₂=0 Ha: H1 H₂>0 Ş H₂ = 0.10 Ha: H - Hz≤0.10 Vi (1,0) Sample 1 1.3 2.9 1.6 2.9 2.8 More Sample 2 4.4 2.6 3.8 4.1
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