Which of the following is the correct alternative hypothesis for a non-directional independentmeasures t-test? A. M – μ = 0 B. M1 – M2 = 0 C. μ1 – μ2 = 0 D. M1 – M2 ≠ 0 E. μ1 – μ2 ≠ 0

The director of student services at Oxnard College is interested in whether women are less likely to attend orientation than men before they begin their coursework.  A random sample of freshmen at Oxnard College were asked what their gender is and whether they attended orientation.  The results of the survey are shown below: Data for Gender vs. Orientation Attendance   Women Men Yes 423 541 No 211 236 What can be concluded at the αα = 0.01 level of significance?   1. For this study, we should use? Select an answer:    z-test for the difference between two population proportions? t-test for a population mean?  t-test for the difference between two dependent population means? t-test for the difference between two independent population means , or  z-test for a population proportion? 2. The null and alternative hypotheses would be:    H0? Select an answer: p1 or  μ1?  Select an answer:  =,  <,  >, or  ≠  Select an answer: μ2  or  p2 ? (please enter a decimal)     H1?…

Use the calculator displays to the right to make a decision to reject or fail to reject the null hypothesis at a significance level of α=0.10. ​Z-Test   ​Z-Test   Inpt: Data Stats       μ≠80   μ0​:80     z=−1.18321596   σ​:3.75     p=0.23672357   x​:79.25     x=79.25   ​n:35     n=35   μ: ≠μ0 <μ0 >μ0           Calculate Draw       Choose the correct answer below.     A. Since the​ P-value is greaterthan α​, fail to reject the null hypothesis.   B. Since the​ P-value is lessthan α​, reject the null hypothesis.   C. Since the​ P-value is lessthan α​, fail to reject the null hypothesis.   D. Since the​ P-value is greaterthan α​, reject he null hypothesis.

11. A hypothesis test is conducted with H0 : µ = 46 vs. Ha: µ ≠ 46. The hypothesis test sample finds x̅ = 47.2, s = 5, and n = 81. The tail area in this test is P =

The NAEP considers that a national average of 283 is an acceptable performance. Using α = .05, run a two-tail t-test for one sample to test Ho: µ=283 for the 2019 scores. Report the t-obt, df, and p-values. Would you reject the null hypothesis that the 2019 scores come from a population with average 283? If this is the case, does it come from a population from larger or smaller average?

Use SAS output for a random sample of size 20 to answer the following questions. Regression of yon X and X₂ Regression of y on X₁ X₁₂, and X₂ 3 F1.17, 0.99 = 8.40 F3,16, 0.99 = 5.29 F1.17, 0.95 = 4.45 F3,16, 0.95 = 3.24 d) is the overall regression of the model that includes the three predictors significant? Use a=0.01 O Reject the null hypothesis O Do not reject the null hypothesis Source Model Error Parameter Intercept x1 x2 x3 Corrected Total 19 1855.20200 Source DF 1 1 1 x1 x2 x3 Number of Observations Read 20 Number of Observations Used 20 R-Square Coeff Var Root MSE 0.818318 22.31297 Analysis of Variance x1 x2 x3 Sum of Mean Source Model Error DF Squares 2 1317.79841 658.89921 17 537.40359 31.61198 Square F Value Pr > F 20.84 F 3 1518.144941 506 048314 24.02 0001 337.067069 21.066066 1855.202000 16 Corrected Total 19 F2,17, 0.99 = 6.11 F4.16, 0.99 = 4.77 F2,17, 0.95 = 3.59 F4.16, 0.95 = 3.01

Refer to the accompanying data display that results from a sample of airport data speeds in Mbps. Complete parts​ (a) through​ (c) below.   . TInterval ​(13.046,22.15) x=17.598 Sx=16.01712719 n=50 a. What is the number of degrees of freedom that should be used for finding the critical value tα/2​?   df=__ ​(Type a whole​ number.) b. Find the critical value tα/2corresponding to a​ 95% confidence level.   tα/2= ​(Round to two decimal places as​ needed.) c. Give a brief general description of the number of degrees of freedom.     A. The number of degrees of freedom for a collection of sample data is the number of​ unique, non-repeated sample values.   B. The number of degrees of freedom for a collection of sample data is the number of sample values that are determined after certain restrictions have been imposed on all data values.   C. The number of degrees of freedom for a collection of sample data is the number of sample values that can vary…