个 A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts. a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? OA Ho: #₁ #₂ H₁: Hy > H₂ C. Ho: #₁ #₂ H₁: 14 *1₂ The test statistic, t, is (Round to two decimal places as needed.) OB. Ho: 12 H₁:14 24₂ OD. Ho: Hy #4₂ H₁: Hy

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A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random
samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a
0.01 significance level for both parts.
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View an example
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a. Test the claim that the two samples are from populations with the same mean.
What are the null and alternative hypotheses?
OA H₂:4₁ = 4₂
H₂: Hy > H₂
C. Ho: H₁ = 4₂
Hy: Hy #4₂
The test statistic, t, is (Round to two decimal places as needed.)
12
#
3
E
D
с
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Transcribed Image Text:K A study was done using a treatment group and a placebo group. The results are shown in the table. Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b) below. Use a 0.01 significance level for both parts. S @ 2 - View an example W S X a. Test the claim that the two samples are from populations with the same mean. What are the null and alternative hypotheses? OA H₂:4₁ = 4₂ H₂: Hy > H₂ C. Ho: H₁ = 4₂ Hy: Hy #4₂ The test statistic, t, is (Round to two decimal places as needed.) 12 # 3 E D с Get more help - 80 R F V 5 T G ♥ B 6 1 of Y MacBook Air H & N I' D 7 U J * 8 M OB. Ho: <H2 H₁: H2H₂ OD. Ho: Hy #₂ H₂: Hy <H₂ 1 V DII K ( 9 I (8,8) O L command More ) O P F10 : ; 1 option - Cle Question Viewer { [ ? 1 d F11 + 11 I AS H } ] n X S Check answer H₁ 31 2.36 0.93 delete H₂ 35 2.61 0.53 X return shift drew
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