Conduct a test at the a = 0.10 level of significance by determining (a) the null and alternative hypotheses, (b) the test statistic, and (c) the P-value. Assume the samples were obtained independently from a large population using simple random sampling. Test whether p, >P2. The sample data are x, = 126, n, = 248, x, = 134, and n, = 311. (a) Choose the correct null and alternative hypotheses below. O A. Ho: P1 = 0 versus H,: P, #0 O B. Ho: P, =P2 versus H,: P P2 O D. Ho: P, =P2 versus H;: P1 * P2 (b) Determine the test statistic. Za= (Round to two decimal places as needed.)

f - 2 Fill in the blank. A Type I error is the mistake of OA. failing to reject the null hypothesis OB. rejecting the null hypothesis OC. rejecting the alternative hypothesis OD. failing to reject the alternative hypothesis 2 F2 W S X #3 80 F3 E D C $ 4 a F4 when it is actually true. R F % 5 V 9 F5 T G MacBook Air ^ 6 si F6 Y B & 7 H F7 U N 8 00 J DII FB 1 ( 9 F9 K M ) O V O F10

Weight Gain of Athletes A researcher wishes to see whether there is any difference in the weight gains of athletes following one of three special diets. Athletes are randomly assigned to three groups and placed on the diet for 6 weeks. The weight gains (in pounds) are shown here. At a=0.005, can the researcher conclude that there is a difference in the diets?   Diet A: 3, 4, 5, 6   Diet B: 12, 13, 14, 6, 7, 8   Diet C: 3, 4, 5 ,6   Part 2. State the hypotheses and identify the claim with the correct hypothesis.       Part 3. Compute the test value. Always round score values to two decimal places.       Part 4. Find the -value. Round the answer to four decimal places.       Part 5. Reject or not to reject the null hypothesis.

paired T test for the following:  My project question is: Did the mental health decline after COVID? Score 1 is the avg mental health score pre-covid, score 2 is the avg mental health score post- covid. Show your work.

Test the hypothesis using the​ P-value approach. Be sure to verify the requirements of the test.   Upper H 0 : p equals 0.74 versus Upper H 1 : p not equals 0.74 n equals 500 comma x equals 360 comma alpha equals 0.05       Question content area bottom Part 1 Is np 0 left parenthesis 1 minus p 0 right parenthesis greater than or equals 10 ​? Select the correct choice below and fill in the answer box to complete your choice. ​(Type an integer or a decimal. Do not​ round.)   A. ​Yes, because np 0 left parenthesis 1 minus p 0 right parenthesis equalsenter your response here .   B. ​No, because np 0 left parenthesis 1 minus p 0 right parenthesis equalsenter your response here . Part 2 Now find ModifyingAbove p with caret .   ModifyingAbove p with caret equalsenter your response here   ​(Type an integer or a decimal. Do not​ round.) Part 3 Find the test statistic z 0 .   z 0 equalsenter your response here   ​(Round to two decimal…

Fill in the blank.“To use a P-value to make a conclusion in a hypothesis test, compare the P-value to alpha.If ( ________________________) then reject Ho, Otherwise fail to reject Ho.”

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Psyc 10 Laboratory Assignment 3 - Chapt 4 & 5 Application #2 Stressed Much More? O To test the effectiveness of a new stress reduction method: 20 randomly selected people are trained in the stress reduction method and measured. Their mean stress level is 25. O In the general population, it is known that stress levels are: u = 40 and o=10. O Does the new stress reduction method lower stress? O Using the five steps of hypothesis testing, answer the question above. O Significance level?

While rejecting H0 on a hypothesis test means that _______, measures of effect size tell you ______. how big an effect the treatment has; that the treatment has some effect that the treatment has some effect; how big an effect the treatment has that the treatment caused an increase; that the treatment caused a decrease d. that the treatment caused a decrease; that the treatment caused an increase