Hypothesis Testing Questions set 3

Claim: The mean weight of apples in a shipment is 150 grams. Sample data: n=16, xˉ=152, s=5, α=0.05 What are the critical values for this hypothesis test?

• ±2.120

• ±2.131

• ±2.145

• ±2.110

Claim: The mean height of students in a university is 170 cm. Sample data: n=10, xˉ=172, s=6, α=0.05 What are the critical values for this hypothesis test?

• ±2.262

• ±2.306

• ±2.228

• ±2.201

Claim: The mean battery life of a new laptop model is 8 hours. Sample data: n=20, xˉ=7.8, s=1.5, α=0.05 What are the critical values for this hypothesis test?

• ±2.086

• ±2.120

• ±2.093

• ±2.110

Claim: The mean time to complete a task in an office is 45 minutes. Sample data: n=12, xˉ=44, s=3, α=0.05 What are the critical values for this hypothesis test?

• ±2.160

• ±2.179

• ±2.201

• ±2.145

A right-tailed test is conducted with a sample size of 25 and a test statistic of t=2.315. Based on the t-distribution table, which of the following represents the correct P-value range?

• 0.005

• 0.01

• 0.025

• 0.001

A right-tailed test is conducted with a sample size of 10 and a test statistic of t=2.764. Based on the t-distribution table, which of the following represents the correct P-value range?

• 0.01

• 0.0025

• 0.005

• 0.025

A right-tailed test is conducted with a sample size of 20 and a test statistic of t=2.539. Based on the t-distribution table, which of the following represents the correct P-value range?

• 0.005

• P=0.01

• 0.02

• 0.001

A two-tailed test is conducted with a sample size of 25 and a test statistic of t=2.315. Based on the t-distribution table, which of the following represents the correct P-value range?

• 0.01

• 0.02

• 0.005

• 0.05

A two-tailed test is conducted with a sample size of 18 and a test statistic of t=2.898. Based on the t-distribution table, which of the following represents the correct P-value range?

• 0.02

• 0.001

• 0.005

• 0.01

A two-tailed test is conducted with a sample size of 22 and a test statistic of t=2.485. Based on the t-distribution table, which of the following represents the correct P-value range?

• 0.005

• 0.01

• 0.02

• 0.05