In an effort to improve the mathematical skills of 15 students, a teacher provides a weekly 1-hour tutoringsession. A pre-test is given before the sessions and a post-test is given after. The results are shown here.Test the claim that there was an increase in the scores. at a=0.01. You believe that the population isnormally distributed, but you do not know the standard deviation. When calculating difference use Post-test minus Pre-test.pre-test post-test91406655627982917880414748506068586862724956Which of the following are the correct hypotheses?Ο Ho: ad ≥ 0© Ho: μa < 0HA:Hd < 0(claim)101Ο Ho: μα = 0HA:Hd > 0(claim)48584859858192HA:Hd 0(claim)The test statistic is:Given that a is 0.01 the critical value is 2.625The p-value is:(round to 3 places)(round to 3 places)

For the given data Perform paired t test Find Test statistic =? P value =?

Answered: 48 58 48 59 85 81 92 80 47 48 50 60 68…

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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Find the reciprocal values for men and women
Having obtained a random sample from a population, you want to use a χ-squared test for determine whether the population distribution is standard normal. If you base the test on six class intervals that have equal probability, the second interval has the form (−.96743, b), in the next space write the value of b. Answer for part 1 b) If you want to use a χ-square test to prove H0: the population distribution is normal with μ = 0.5, σ = 0.002 and the test must be based on six class intervals Equally probable, the second interval has the form (0.4980652, b), in the next space write the value of b. Answer for part 2 c) Assuming that χ2 = 8.11 and α = 0.10 choose the correct option:
pter 14) - Part A i Mail - Sanche Given are five observations for two variables, x and y. Q Sea 4 8 13 15 17 Use the estimated regression equation: âŷ = 76.4859 – 3.3233x. Yi 57 54 48 19 15 a. Compute the mean square error using equation. S = MSE = SSE n – 2 (to 4 decimals) b. Compute the standard error of the estimate using equation. SSE s = VMSE = n – 2 (to 4 decimals) c. Compute the estimated standard deviation of bị using equation. (¤i – 7)² (to 4 decimals) d. Use the t-test to test the following hypotheses (a = 0.10): Ho: B1 = 0 Ha: B1 #0 Compute the value of the t-test statistic (Enter negative values as negative numbers). (to 3 decimals) What is the p-value? Use Table 2 from Appendix B. p-value is Select your answer - What is your conclusion? Ho. We - Select your answer - e. Use the F-test to test the hypotheses in part (d) at a 0.10 level of significance. MacBook
Can you help me solve these?
Use the information given and the eight-step approach to test the hypotheses. Let a = .01. Họ : µ = 36 H :µ # 36 n = 63 x = 38.4 o = 5.93 a Appendix A Statistical Tables (Round your answer to 2 decimal places, e.g. 1.75.) The value of the test statistic is and we
14
A random sample of 40 bags of a certain brand of chips contains an average of 32 grams of fat with s.d. 2.8 grams. We wish to determine whether there is strong evidence that the overall average amount of fat contained in this brand of chips is over 30 grams.(a)Clearly state the test hypotheses as follows:Let____represent the overall______H0:____,H1:_____(b)Use an appropriate formula to calculate the test statistic.(c)Use an appropriate table to estimate the p-value. (Do not draw any conclusion)
Let n₁ = 50, X₁ = 40, n₂ = 50, and X₂ = 20. Complete parts (a) and (b) below. a. At the 0.05 level of significance, is there evidence of a significant difference between the two population proportions? Determine the null and alternative hypotheses. Choose the correct answer below. OA. Ho: ₁2π₂ H₁: π₁ π₂ C. Ho: π₁ #1₂ H1: П1 =П2 Calculate the test statistic, ZSTAT, based on the difference P₁ - P2. The test statistic, ZSTAT, is (Type an integer or a decimal. Round to two decimal places as needed.) Calculate the p-value. O D. Ho: ₁ = π₂ H₁: π₁ #π₂ 퍼 The p-value is. (Type an integer or a decimal. Round to three decimal places as needed.)
Consider the hypotheses below. H0: μ=50 H1: μ≠50 Given that x=57, s=12, n=30, and α=0.05, answer the questions below.
The old drug treatment for a specific type of cancer produced a five year survival rate of 15 to 1,000. In a sample of a new drug, the survival rate is 45 per 1,000. Has there been an increase in the overall survival rate with new drug? The null and alternative hypotheses are: H subscript 0 colon space M equals 15 space a n d space H subscript 1 colon space M equals 45 H subscript 0 colon space M equals 45 space a n d space H subscript 1 colon space M equals 15 H subscript 0 colon space M equals 15 space a n d space H subscript 1 colon space M greater than 15 H subscript 0 colon space M less than 15 space space a n d space H subscript 1 colon space M equals 45 space H subscript 0 colon space M less than 15 space space a n d space H subscript 1 colon space M element of 15 space
You are conducting a hypothesis test at the 0.05 alpha level for the claim that a coin is fair. In other words, the coin is equally likely to land heads as it is tails. The table below shows how the coin landed after many flips. Category How coin landed ObservedFrequency Heads 70 Tails 60 Report all answers accurate to two decimal places.What is the chi-square test-statistic for this data? χ2=χ2= What are the degrees of freedom for this test?d.f.= What is the p-value for this sample? p-value =
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