Find the expected counts in each category using the given sample size and null hypothesis.Ho:PA = 0.60, PB = 0.25, PCEnter the exact answers.CategoryExpectedcountiAB= 0.15, n = 400iс Find the expected counts in each category using the given sample size and null hypothesis.Ho: All three categories A, B, C are equally likely; nEnter the exact answers.CategoryExpectedcountiA1B= 600с

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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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A fitness trainer is interested in investigating whether ethnicity and the first exercise activity that members engage in are dependent. The table below shows the results of the trainer's observation of randomly selected members. Frequencies of Ethnicity and Exercise Activity Weight Machines White Hispanic Black Other Cardio 84 84 68 48 98 97 51 70 O Homogeneity O Independence Free Weights 81 98 69 41 What can be concluded at the α = 0.05 significance level? a. What is the correct statistical test to use? O Goodness-of-Fit Paired t-test b. What are the null and alternative hypotheses? Ho: O Ethnicity and first exercise activity are dependent. O Ethnicity and first exercise activity are independent. O The distribution of first exercise activity is not the same for each ethnicity. O The distribution of first exercise activity is the same for each ethnicity. H₁: O The distribution of first exercise activity is the same for each ethnicity. O Ethnicity and first exercise activity are…
We take a simple random sample (SRS) from a population to study the effect of marital status (married vs. not married on systolic blood pressure. Which t procedure should we use? A. a one-sample t procedureB. a paired t procedureC. ANOVAD. Noe of the above
Find the expected counts in each category using the given sample size and null hypothesis. Ho: P₁ P₂ = P3 = P4 = 0.25; n Enter the exact answers. Category Expected count 1 2 = 700 3 i 4
Question Help Y 12.2.79 The number of successes and the sample size for a simple random sample from a population are given below. x = 8, n = 40, Ho:p=0.4, H2: p< 0.4, a = 0.01 a. Determine the sample proportion. b. Decide whether using the one-proportion z-test is appropriate. c. If appropriate, use the one-proportion z-test to perform the specified hypothesis test. Click here to view a table of areas under the standard normal curve for negative values of z. Click here to view a table of areas under the standard normal curve for positive values of z. c. Determine the test statistic, if appropriate. Select the correct choice below and, if necessary, fill in the answer box to complete your answer. z= - 2.58 (Round to two decimal places as needed.) B. The one-proportion z-test is not appropriate. Identify the critical value(s), if appropriate. Select the correct choice below and, if necessary, fill in the answer box to complete your answer. A. ±Za/2 (Round to two decimal places as…
T =???
Find the standardized test statistic estimate, z, to test the hypothesis that p1 > p2. Use α = 0.01. The sample statistics listed below are from independent samples. Sample statistics: n1 = 100, x1 = 38, and n2 = 140, x2 = 50 a.0.638 b.0.362 c.2.116 d.1.324
What are the values for SS and variance for the following sample of n = 3 scores? Sample: 8, 5, 2
Determine the test statistic. Determine P-value Reject or Fail to reject?
What is the standard error for the independent sample t statistic for the two samples? Sample 1 n = 6, SS = 56 Sample 2 n = 4, SS = 40 Select one: 2.24 9.6 12 5
Find the test statistic, t, to test the hypothesis that u, u,. Two samples are randomly selected and come from populations that are normal. The sample statistics are given below. Round to three decimal places. n= 11 n2 = 18 X =6.7 X2 = 7.1 S1=0.76 S2 = 0.51 O A. - 1.546 B. -1.821 C. - 2.123 S D. -1.326 eting Click to select your answer. Type here to search hp 立

Determine P and o- from the given parameters of the population and sample size. μ = 78, o = 24, n = 36 P=0

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Find the expected counts in each category using the given sample size and null hypothesis. 0.60, PB = 0.25, Pc = 0.15, n = 400 Enter the exact answers. Category Expected count i A Ho: PA = i B i C