Null Hypothesis Alternative Hypothesis One tailed or two tailed? Test
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- Confidence intervals on the variance is very sensitiva on the normality of the data whie the confidence interval on the standard deviation is nat O True O FalseTrue or False? In a probit regression model, the link function is the cumulative distribution function of a standard normal random variable. True FalseQuestion: There choose one (is/is not) enough evidence to conclude that the mean weight is choose one (more than/less than/ different than) 75 pounds.
- a discrete random variable both a continuous and a discrete random variable None of the above. QUESTION 13 Which of the following variables is an example of a continuous random variable? Number of customers Number of stocks purchased Number of products sold at a store Interval weights of an object QUESTION 14 A measure of the average value of a random variable is called a(n)Using Appendix C-1 or Appendix C-2 find the p-value for each test statistic. (Round your answers to 4 decimal places.) TestStatistic p-value (a) Right-tailed test z = +1.04 (b) Left-tailed test z = –1.74 (c) Two-tailed test z = –1.07As the plant operations manager for Oxford Biotech, you are responsible for monitoring the amount of product placed in each carton. To be consistent with package labeling, cartons should contain a mean of 30 grams of product. Thousands of cartons are produced during a shift, and weighing every single carton was determined to be too time-consuming, costly, and inefficient. Instead, a random sample of cartons is selected. Based on your analysis of the sample, you had to decide whether to maintain, alter, or shut down the process.Using the concept of the sampling distribution of the mean, you are able to determine probabilities that such a sample mean could have been randomly selected from a population with mean of 30 grams. Specifically, if a sample size of n = 20 is selected from a population with mean of 30 grams and standard deviation of 0.60, you calculate the probability of selecting a sample with a mean of 29.85 grams or less to be ____.
- Chi-Square Tests Asymptotic Significance (2-sided) Value df Pearson Chi-Square ,034 Likelihood Ratio 2 ,033 15 - Linear-by-Linear Association 1 380 N of Valid Cases What is the P account value? a) Cannot be found from existing table O B) 0.034 O NS) None O D) 0.033 O TO) 0.380 2.Pls show steps thank youUsing Appendix C-1 or Appendix C-2 find the p-value for each test statistic. (Round your answers to 4 decimal places.) Test Statistic p-value (a) Right-tailed test z = +2.74 (b) Left-tailed test z=-2.63 (c) Two-tailed test z=-2.04
- Hypothesis Test of Proportions using a Hypergeometric Distribution200 voters and it is claimed that the proportion of voters supporting the President for reelection is 61%. We take a sample of 25 voters and find that 20% of them support the reelection of the President. Do we have sufficient evidence to suggest that the true proportion of voters supporting reelection is less than claimed? Use α = 0.1.Note that we are performing a test of hypothesis about a population proportion. Since the population size is known and finite we use a hypergeometric distribution to compute the p-values.Enter in the important parameters for this hypergeometric distribution.Population size = N =Proportion of successes in the population = p0= %Number of successes in the population = M =Sample size = n =Proportion of successes in the sample = p̂ = %Number of successes in the sample = X =p-value = (6 decimal places)Conclusion:At the ? = 0.1 level there --- is not is enough evidence to conclude that the true…Free experiment comparing more than two treatment conditions you should initially Run one ANOVA Rather than many separate p r y size comparisons because ANOVA Has less risk of type 1 error/ Alpha error because me several means are compared in one test a test paste on variance is more sensitive than a test based on means ANOVA has less risk of type 2 error/ beta error because several means are compared in one test you are less likely to make a mistake in the computation of a single testSingle Sample t-Test 11.1 What factor determines whether you should use a z-test or a t-test statistic for a hypothesis test?
