d. What is the test statistic? Show what you have typed in yourcalculator.e. What is the p-value?f. Choose one: Based on your work, we should.hypothesis.the nulli. rejectii. acceptiii. fail to reject ) Is memory ability before a meal the same as after a meal? Ten people weregiven memory tests before their meal and then again after their meal. The data is shownbelow. A higher score indicates a better memory ability.Score on the Memory TestBefore86 69 64 66 87 76 85 66 72 65aMealAfter84 48 70 56 67 58 78 68 62 51aMealAssume a Normal distribution. What can be concluded at the a = 0.01 level ofsignificance?a. Choose one: For this study, we should usei. t-test for a population mean.ii. z-test for population proportion.iii. t-test for the difference between two dependent population meansiv. t-test for the difference between two independent populationmeansv. Z-test for the difference between two population proportionsb. State the null hypothesis.c. State the alternative hypothesis.EGE

a. In this case two samples are taken. Thus, it is not single-sample test.

Answered: ) Is memory ability before a meal the…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Students in an experimental psychology class did research on depression as a sign of stress. A test was administered to a sample of 30 students.The scores are shown below. 43 51 11 91 77 36 64 37 42 72 54 62 36 75 51 D 72 37 29 39 61 48 63 36 41 21 37 51 47 86 14 To find the 10% trimmed mean of a data set, order the data, delete the lowest 10% of the entries and the highest 10% of the entries, and find the mean of the remaining entries. Complete parts (a) through (c). (a) Find the 10% trimmed mean for the data. The 10% trimmed mean is (Round to the nearest tenth as needed.) (b) Compare the four measures of central tendency, including the midrange. Mean = (Round to the nearest tenth as needed.) Median = Mode = (Use a comma to separate answers as needed.) The midrange is found by the following formula. (Maximum data entry) + (Minimum data entry) Midrange = (Round to the nearest tenth as needed.) (c) What is the benefit of using a trimmed mean versus using a mean found using all data…
The following data lists the ages of a random selection of actresses when they won an award in the category of Best Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts (a) and (b) below. Actress (years) 31 Actor (years) 27 28 27 33 27 29 40 32 32 9 62 34 39 41 29 35 53 41 41 42 a. Use the sample data with a 0.01 significance level to test the claim that for the population of ages of Best Actresses and Best Actors, the differences have a mean less than 0 (indicating that the Best Actresses are generally younger than Best Actors). In this example, Hg is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the actress's age minus the actor's age. What are the null and alternative hypotheses for the hypothesis test? Ho: Hd year(s) H1: Hd year(s) (Type integers or decimals. Do not round.) Identify…
The following data lists the ages of a random selection of actresses when they won an award in the category of Best Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts (a) and (b) below. Actress (years) 27 Actor (years) 61 29 35 28 31 36 39 36 33 25 27 34 47 41 41 31 37 35 D 43 a. Use the sample data with a 0.01 significance level to test the claim that for the population of ages of Best Actresses and Best Actors, the differences have a mean less than 0 (indicating that the Best Actresses are generally younger than Best Actors). In this example, H is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the actress's age minus the actor's age. What are the null and alternative hypotheses for the hypothesis test? Ho Hd= 0 year(s) H₁ Hd< 0 year(s) (Type integers or decimals. Do not round.)…
The table shows population statistics for the ages of Best Actor and Best Supporting Actor winners at an awards ceremony. The distributions of the ages are approximately bell-shaped. Compare the z-scores for the actors in the following situation. Best actor Best supporting actor u= 41.0 u=55.0 Q= 7.7 Q= 12 In a particular year, the Best Actor was 44 years old and the best supporting actor was 42 years old. Determine the z-scores for each. best actor z=____________ best supporting actor z=___________ Round to two decimal places as needed.
The following data lists the ages of a random selection of actresses when they won an award in the category of Best Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts (a) and (b) below. Actress (years) 26 Actor (years) 26 32 28 38 29 29 45 27 31 D 60 37 40 40 28 36 50 35 41 43 a. Use the sample data with a 0.01 significance level to test the claim that for the population of ages of Best Actresses and Best Actors, the differences have a mean less than 0 (indicating that the Best Actresses are generally younger than Best Actors). In this example, Hd is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the actress's age minus the actor's age. What are the null and alternative hypotheses for the hypothesis test? Ho: Ha year(s) year(s) (Type integers or decimals. Do not round.)
The following data lists the ages of a random selection of actresses when they won an award in the category of Best Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts (a) and (b) below. Actress (years) 25 27 28 28 37 26 25 44 27 33 O Actor (years) 59 35 35 39 29 37 55 35 37 39 a. Use the sample data with a 0.01 significance level to test the claim that for the population of ages of Best Actresses and Best Actors, the differences have a mean less than 0 (indicating that the Best Actresses are generally younger than Best Actors). In this example, Ha is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the actress's age minus the actor's age. What are the null and alternative hypotheses for the hypothesis test? Ho: Hdl year(s) H1: Hal (Type integers or decimals. Do not round.) year(s) Get more…
Is memory ability before a meal different compared to after a meal? Twelve people were given memory tests before their meal and then again after their meal. The data is shown below. Before 74 68 82 97 76 81 80 75 88 84 79 91 After 76 68 85 94 79 88 83 72 90 87 79 90 Assume the distribution of the differences is normal. What can be concluded at the 0.05 level of significance? (d = score before - score after) p-Value Interpretation: If the average memory ability is the same before and after a meal and if another twelve randomly selected people are tested, then there is a: _____________percent chance that this new group would either perform at least:____________points better on the test before the meal than on the test after the meal or at least points better on the test after the meal than on the test before the meal. Level of significance interpretation: If the average memory ability is the same before and after a meal and if many groups of twelve people are tested before…
The following data lists the ages of a random selection of actresses when they won an award in the category of Best Actress, along with the ages of actors when they won in the category of Best Actor. The ages are matched according to the year that the awards were presented. Complete parts (a) and (b) below. Actress (years) 30 Actor (years) 27 32 30 38 27 25 45 32 36 O 58 40 38 37 28 31 51 40 40 44 a. Use the sample data with a 0.01 significance level to test the claim that for the population of ages of Best Actresses and Best Actors, the differences have a mean less than 0 (indicating that the Best Actresses are generally younger than Best Actors). In this example, H. is the mean value of the differences d for the population of all pairs of data, where each individual difference d is defined as the actress's age minus the actor's age. What are the null and alternative hypotheses for the hypothesis test? Ho: Hd year(s) H: Hd year(s) (Type integers or decimals. Do not round.)
The table shows population statistics for the ages of Best Actor and Best Supporting Actor winners at an awards ceremony The distributions of the ages are approximately bell-shaped. Compare the z-scores for the actors in the following situation. Best Actor Best Supporting Actor H= 51.0 H = 43.0 6 = 6.9 0 = 16 In a particular year, the Best Actor was 50 years old and the Best Supporting Actor was 47 years old. Determine the z-scores for each. Best Actor: z = Best Supporting Actor: z = (Round to two decimal places as needed.) Clear All Check Answer Help Me Solve This View an Example Get More Help - 10:22 PM P Type here to search 68°F Cloudy ^ 24 88 10/7/2021 10.0517 Esc FI C F5 F2 F3 F4 F6 F7 F8 PrtSc Insert Delete F9 F10 F11 F12 C@ 3 6 80 Backspace Num Lock T Y U P 7 Home PaUp S D G +II HI 5 LL LU

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