You wish to test the following claim (Ha) at a significance level of a = 0.10. Ho: ₁ = 12 Ha:
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For the homework what is Test statistic and P value?
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- = .7 and =.6. Test Ho: (P, - P2) =0 against H,:(P, – P2)>0 using a = .05given H a: u>85 and P=0.007. do you reject or fail to reject H0 at the 0.01 level of significance?A botanist grew 24 pepper plants on the same greenhouse bench. After 21 days, she measured the total stem length (cm) of each plant, and obtained the following values: 10.1 10.9 11.8 12.2 12.2 12.5 13.2 13.2 13.5 What terms can be used to classify the variable of interest in this study? 9.8 12.1 13.1 O A. Categorical - Nominal OB. Categorical - Ordinal OC. Numeric - Continuous OD. Numeric - Discrete 11.3 12.3 13.4 11.9 12.6 13.5 12.0 12.7 13.6 12.0 13.0 14.1
- Amish State Oil claims their gasoline additive increases fuel economy. Miles per gallon (MPG) for 15 identical vehicles were obtained and results are listed below in column one. These vehicles were given the gasoline additive and the MPG results are listed in column two. Find p and state your conclusion whether Amish State Oil’s claim is true, using a= 0.05.For a population with u=50 and o=10,what is the x value corresponding to z=0.4?Q. 24 What is the difference between absolute and relative dispersion?
- In order to meet air pollution standards, the mean emission level for engines of a certain type must be less than 20 parts per million (ppm) of carbon. A study is to be done to determine if the engines from a particular company meet the standard. Which of the following represents the correct null and alternative hypotheses for this study? Let μ=μ= the mean parts/million of carbon emitted for these cars. a.H0:μ=20;Ha:μ>20H0:μ=20;Ha:μ>20 b.H0:μ≥20;Ha:μ>20H0:μ≥20;Ha:μ>20 c.H0:μ=20;Ha:μ≥20H0:μ=20;Ha:μ≥20 d.H0:μ≥20;Ha:μ<20H0:μ≥20;Ha:μ<20 e.H0:μ>20;Ha:μ<20In a population with o = 6, a score of X = 48 corresponds to z = 1.25. The mean for this population is u =The following output summarizes the results for a one-way analysis of varlance experiment in which the treatments were three different hybrid cars and the variable measured was the miles per gallon (mpg) obtained while driving the same route. (You may find it useful to reference the glable.) Hybrid 1129, 01 20 Hybrid 2: 235, m₂ 15 Hybrid 3:2 22, ny = 18 Source of Variation Between Groups within Groups Total df SS 1,068.27 1,483.70 2,551.97 o. At the 5% significance level, can we conclude that average mpg differs between the hybrids? 2 MS 534.14 29.67 50 52 Population Mean Differences O Yes. since the p-value is less than the significance level. O Yes, since the p-value is not less than the significance level. O No, since the p-value is less than the significance level. Confidence Interval 15.00 O No, since the p-value is not less than the significance level. b. Use Tukey's HSD method at the 5% significance level to determine which hybrids' means differ. (If the exact value for me is…
- our p value is .03 and you chose your α level to be .05. What kind of error could you be making? a. Type I error b. Type II error c. Type I and Type II error d. Neither errorsO E. Ho: H270 %3D the administrator's claim that the mean score for the state's eighth graders on the exam is more than 270.. Claim: The mean IQ score of statistics professors is greater than 118. Sample data N=50, x=120, assume that o =12 and the alpha is 0.05.