PLS SHOW YOUR COMPLETE SOLUTION What type of hypothesis testing should be used? *O Chi-square Goodness of Fit TestO chi-square Test on Independence5What are the null and alternative hypothesis? *HO: The presence of particles does not affect the quality of the wafers; H1: The presence of particles does affectthe quality of the wafersHO: The presence of particles does affect the quality of the wafers; H1: The presence of particles does not affectthe quality of the wafers6What are the significance level and the type of test? *O a = 0.05, Right-tailedO a = 0.05, left-tailedO a = 0.05, two-tailed CASELET 1The results of a study conducted as part of a yield-improvement effort at a semiconductor manufacturingfacility provided defect data for a sample of 450 wafers. The following contingency table presents asummary of the responses to two questions: "Was a particle found on the die that produced the wafer?"and "Is the wafer good or bad?" Use an alpha of 0.05.Quality of WaferBadParticlesGoodTotalsYes143650No32080400Totals334116450

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Answered: What type of hypothesis testing should…

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 manufacturer of chocolate chips would like to know whether its bag filling machine works correctly at the 428 gram setting. It is believed that the machine is underfilling or overfilling the bags. A 46 bag sample had a mean of 433 grams. Assume the population variance is known to be 441. Is there sufficient evidence at the 0.01 level that the bags are underfilled or overfilled? Step 1 of 6: State the null and alternative hypotheses. Step 2 of 6: Find the value of the test statistic. Round your answer to two decimal places. Step 3 of 6: Specify if the test is one-tailed or two-tailed. Step 4 of 6: Find the P-value of the test statistic. Round your answer to four decimal places. Step 5 of 6: Identify the level of significance for the hypothesis test. Step 6 of 6: Make the decision to reject or fail to reject the null hypothesis. Step 7 of 7: State the conclusion of the hypothesis test.
Which of the following statements is true regarding the influence of a small alpha level in the context of hypothesis testing? a. A small alpha level reduces the likelihood of a Type I error. b. A small alpha level reduces the effect size. c. A small alpha level increases statistical power. d. A small alpha level increases the likelihood of detecting statistical significance.
Using the information provided in the SPSS output. You are asked to make a decision about whether to reject the null hypothesis that the population value of gamma equals 0 (i.e., that there is no ordinary association in the population between frequency of prayer and health). If alpha = 0.05 and you use a non-directional alternative hypothesis, which of the following is true?) A. Since the p-value is larger than alpha, you do not reject the null hypothesis B. Since the p-value is less than alpha, you do not reject the null hypothesis C. Since the p-value is larger than alpha, you reject the null hypothesis. D. Since the p-value is less than alpha, you reject the null hypothesis
As a result of complaints from customers about delivery times, the manager at a pizza delivery service is ready to undertake a study to determine the average delivery time. Until now, the manager has believed the delivery time was 20 minutes. Question content area bottom Part 1 What are the null and alternative hypotheses? H0: ▼ Upper X overbarX sigmaσ ss betaβ muμ alphaα ▼ equals= not equals≠ enter your response here H1: ▼ sigmaσ alphaα ss Upper X overbarX betaβ muμ ▼ equals= not equals≠ enter your response here
Suppose in a hypothesis testing, we obtained a pp-value of 0.003. Which of the following is/are FALSE about pp-value? A. If Type I error rate is set at 0.05, we can reject the null hypothesis. B. We cannot reject the null hypothesis if we set αα to 0.001. C. This pp-value indicates that there is a small chance that that the null hypothesis is true. D. This pp-value indicates a big effect size. E. B and C F. C and D
1. What does it imply if if more values are concentrated above the mean? (Skewness) And would the value of skewness be less than, greater than, or equal to 0? 2. In case the data is highly skewed, can we still rely on the kurtosis coefficient? Why or why not? 3. Can the z-score be a real measure of dispersion?
A researcher who wants to know whether the proportion of male births in a hospital is different from the established baseline of 51.07%, would like to test the following hypotheses: Ho:P = 0.51 vs. Ha :P = does not equal 0.51 a) Is the alternative hypothesis upper tail, lower tail, or two tailed? b) What do you conclude if the test results p-value of 0.03 at alpha value = 5% c) What do you conclude if the test results p-value of 0.08 at alpha value = 10%
A random sample of 54 students from Cabrillo College are selected from a normal population with mu equal to 20 and sigma equal to 5. After a treatment is administered to the students, the researcher calculated the sample mean to be 21. Is there enough evidence to conclude that the treatment had an effect at the 5% significance level? In step three, can we use the Critical Value Method? (a)Don't know (b)Cannot Determine (c)No (d)Yes
A random sample of n1 = 14 winter days in Denver gave a sample mean pollution index x1 = 43. Previous studies show that σ1 = 19. For Englewood (a suburb of Denver), a random sample of n2 = 12 winter days gave a sample mean pollution index of x2 = 37. Previous studies show that σ2 = 13. Assume the pollution index is normally distributed in both Englewood and Denver. (a) State the null and alternate hypotheses. H0: μ1 = μ2; H1: μ1 > μ2 H0: μ1 < μ2; H1: μ1 = μ2 H0: μ1 = μ2; H1: μ1 < μ2 H0: μ1 = μ2; H1: μ1 ≠ μ2 (b) What sampling distribution will you use? What assumptions are you making? The Student's t. We assume that both population distributions are approximately normal with known standard deviations. The standard normal. We assume that both population distributions are approximately normal with unknown standard deviations. The standard normal. We assume that both population distributions are approximately normal with known standard deviations. The Student's t. We…
The average effect size in social psychology is around d = 0.21. Conventionally, a sample over 30individuals is considered 'large.' If we are running an experiment for which we will perform atwo-tailed test t-test and we have 30 individuals in each of the two conditions, what is ourpredicted power? (use the standard alpha)
A sample is selected from a population with population mean = 50 After a treatment is administered to the individuals in the sample, the mean is found to be M = 55 and the variance is s ^ 2 = 64 a. If the sample has n = 36 scores, then conduct the four steps of hypothesis testing to evaluate the significance of the treatment effect and calculate Cohen's d to measure the size of the treatment effectUse a two-tailed test with alpha fevel = .05
Which of the following statements is consistent with hypothesis testing? a. If conducted correctly, hypothesis testing eliminates the risk of error. b. A low alpha level increases the size of the critical region(s). c. The edges of the distribution of sample means are consistent with the alternative hypothesis. d. All else equal, a one-tailed hypothesis test requires a more extreme treatment effect to detect statistical significance than a two-tailed hypothesis test.

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