Consider a standardized two-sided CUSUM with k = 0.2 and h = 8. (a) Use Siegmund's procedure to evaluate the in-control ARL performance of this scheme. (b) Find the out-of-control ARL for 8 = 0.5
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- The data in the contingency table to the right count the number of male and female shoppers who accept or reject a discounted offer in return for supplying a retailer with an email address. Consider using these data to test the null hypothesis that gender and acceptance are independent (H0). Male Female Accept 105 95 Reject 95 105 (c) Find the value of x2(chi-square) for testing H0. The value of x2 (chi-square)for testing H0 is _____. (Round to three decimal places as needed.) (d) Find the p-value for testing H 0. (Round to three decimal places as needed.)A diet center wanted to test three different methods for losing weight to determine if the average weight loss (reported in pounds/week) for each method is the same. The results for the three methods are tabulated below. Given that there is a significant difference between the three methods, use the Tukey test to determine if there is a significant difference between each pair of methods. Let a=0.05. (picture attached)We want to assess the relationship between class rank and how many minutes a person spends on social media. We randomly select 5 students from UMD and have them report their class rank and number of minutes per week they spend on social media. We get the following data. Because class rank is ordinal data, we want to compute Spearman's rho. Please compute the numerator for Spearman's rho and use 4 decimal places for all computations and final answer. (the numerator is referring to the numerator of the fraction, not including the 1- part) Minutes on Social Class Rank Media per Week 100 1,302 500 25 250 10 600 50 200
- What is the meaning (eq) of the formula L in the question (f)?The t-table has entries for areas of 0.10, 0.05, 0.025, 0.01, and 0.005. In contrast, the ?2-table has entries for those areas and for 0.995, 0.99, 0.975, 0.95, and 0.90. Explain why the t-values corresponding to these additional areas can be obtained from the existing t-table but must be provided explicitly in the ?2-table.The t-table has entries for areas of 0.10, 0.05, 0.025, 0.01, and 0.005. In contrast, the ? 2 -table has entries for those areas and for 0.995, 0.99, 0.975, 0.95, and 0.90. Explain why the t-values corresponding to these additional areas can be obtained from the existing t-table but must be provided explicitly in the ? 2 -table.
- Print The contingency table shows the results of a random sample of former smokers by the number of times they tried to quit smoking before they were habit-free and gender. At a = 0.10, can you conclude that the number of times they tried to quit before they were habit-free is related to gender? Perform the indicated chi independence test by completing parts (a) through (e) below. 3. Gender Male Number of times tried to quit before habit-free a 2-3 256 4 or more 150 1 270 Female 148 141 81 (a) Identify the claim and state H, and H,. Hn: The number of times former smokers tried to quit (1) H,: The number of times former smokers tried to quit (2) Which hypothesis is the claim? O Null hypothesis Alternative hypothesis (b) Determine the degrees of freedom, find the critical value, and identify the rejection region. Calculate the degrees of freedom. d.f. = Find the critical value. (Round to three decimal places as needed.) Which region below is the correct rejection region? O A. X > x% O B.…Why is chi squared being found for 1-alpha and not 1-alpha/2From a CoR test, the r-value comes as 2.30. What is wrong with this value?
- how do you find the p-vale in a chi square test?The variation of Y around its mean can be decomposed into which two parts?A researcher investigated the number of days patients spend at a hospital. Patients were randomly selected from four regions and the number of days each patient spent at a hospital was recorded. At α=0.05, can the researcher reject the claim that the mean number of days patients spend in the hospital is the same for all four regions? A. Identify the degrees of freedom for the numerator and for the denominator, determine the critical value. B. Calculate the Test Statistic
