Unit 3 Exam Prep Part 1 SP25

CH9: Ho: 40, Given, xbar=38, σ =12, n=37, α = 0.10. What is the pvalue?

Historically, 23% credit score below 600, Random sample of 100. From this sample, 34 below 600, α =0.05, what is null?

CH8 Based on previous question, is there any evidence proportion has changed?

Using Data Set 2, Ho: Mu<=17, H1: Mu>17, α =0.01, what is the critical value?

CH9 based on previous question, do you reject the null hypothesis?

CH9 delivery says 45 min a sample of 39 found avg time 47.9. Historically, stdev 11.4, α = 0.1, what is ztest?

Historically, 23% credit score below 600, Random sample 100. From this sample, 34 below 600, α =0.05, what is pvalue?

Ch. 8. What is the lower and upper limit Confidence Interval with xbar=59, σ = 12 and n = 33, confidence 90%

CH9: Ho: 40, Given, xbar=38, σ =12, n=37, α = 0.10. What is the critical value?

CH9: Ho: 40, Given, xbar=38, σ =12, n=37, α = 0.10. What is the z-test?

CH8 is bureau claim consistent with sample?

CH9, Ho: Mu>=60, H1: Mu<60, xbar=54.2, s=13.7, n=25, α = 0.10, what is pvalue?

CH9 Following Hypothesis: Ho: p<=0.18, H1: p>0.18, Given pbar=0.2, n=110, and α = 0.10, what is test?

CH8 Construct a 95% confidence to estimate Population Mean using: xbar=24, s=3.1, n=15

CH9 based on previous question, do you reject the null?

CH9 Based on previous questions do you reject the null hypothesis?

University says class size 33, sample 42 classes found avg of 31.2, Assume stdev is 8, using α = 0.10, what is ztest?

CH8 Determine sample size to construct 99% confidence for margin error 20 when σ = 80

CH9, Ho: Mu>=60, H1: Mu<60, xbar=54.2, s=13.7, n=25, α = 0.10, what is critical value?

CH9, based on previous question, do you reject the null hypothesis?

University says class size 33, sample 42 classes found avg of 31.2, Assume stdev is 8, using α = 0.10, what is pvalue

Historically, 23% credit score below 600, Random sample 100. From this sample, 34 below 600, α =0.05, what is test?

CH9 Following Hypothesis: Ho: p<=0.18, H1: p>0.18, Given pbar=0.2, n=110, and α = 0.10, what is pvalue?

CH8 Ed dept says 71.8% of students enrolled in college, sample of 173, and from sample 113 enrolled, make 95% confidence

CH8 based on previous question, what is margin of error?

University says class size 33, sample 42 classes found avg of 31.2, Assume stdev is 8, using α = 0.10, what is critical?

CH9 delivery says 45 min a sample of 39 found avg time 47.9. Historically, stdev 11.4, α = 0.1, what is pvalue?

CH8 Agency, 23.1% of country smoked, sample of 576 citizens, 100 of whom smoked, Construct a 90% Confidence Interval

Using Data Set 2, Ho: Mu<=17, H1: Mu>17, α =0.01, what is the pvalue?

CH9 delivery says 45 min a sample of 39 found avg time 47.9. Historically, stdev 11.4, α = 0.1, what is critical?

CH8, based on previous question, what assumptions need to made about population

CH8. Based on previous question, Do results from sample validate findings?

Based on the previous question, do you reject?

Ch. 8. What is the lower and upper limit Confidence Interval with xbar=59, σ = 12 and n = 45

CH8, based on previous question, does sample provide evidence proportion has changed

CH8. Website claims avg worker 21.96 vacation days per year, using data set 1 construct 95% confidence

CH9, based on previous question, do you reject?

CH8 Bureau says avg wage 26.84, so sample 32 workers, avg wage for sample 25.38, Assume stdev 4.50, using 95% confidence

CH8 Determine sample size to construct 99% confidence for margin error 10 when σ = 80, roundup

CH8 Agency, based on previous question what is margin of error?

CH8 Determine sample size to construct 99% confidence for margin error 15 when σ = 80

Historically, 23% credit score below 600, Random sample 100. From this sample, 34 below 600, α =0.05, what is critical?

Using Data Set 2, Ho: Mu<=17, H1: Mu>17, α = 0.01, what is the test value?

CH9: Ho: 40, Given, xbar=38, σ =12, n=37, α = 0.10. What is the null hypothesis?

University says class size 33, sample 42 classes found avg to be 31.2, Assume stdev is 8, using α = 0.10, what is null?

CH9 delivery says 45 min a sample of 39 found avg time 47.9. Historically, stdev 11.4, α = 0.1, what is null hypothesis

CH8 based on previous Q, what assumptions need to be made about population?

CH9, based on previous question, do you reject Null?

CH9 Following Hypothesis: Ho: p<=0.18, H1: p>0.18, Given pbar=0.2, n=110, and α = 0.10, what is critical?

CH9, Ho: Mu>=60, H1: Mu<60, xbar=54.2, s=13.7, n=25, α = 0.10, what is test statistic?

CH8 bureau question, what is margin of error?