A manufacturer of flash drives for data storage operates a production facility that runs on 3 eight-hour shifts per day. The following contingency table shows the number of flash drives that were defective and not defective from each shift. Production Quality Defective Shift Not Defective 7AM-ЗРМ 7 113 3PM-11PM 10 90 |11РМ-7AM Use the given above information to answer this question. 4 76 What assumption must be true for the chi-square test for independence of shift and production quality variable here? The expected cell count is 5 or more for each cell The average expected cell count is 5 or more The smallest expected cell count is 1 or more The smallest expected cell count is 1 or more and the average expected cell count is 5 or more

A bag of candy contains 5 different types of colored candies; red, green, blue, yellow, and orange. According to the manufacturer, bags should contain an equal number of each color. Students in a statistics class decided to use a chi-square procedure to test the manufacturer’s claim. They opened a bag of candy and recorded the number of candies of each color. The results are shown in the following table. Red Green Blue Yellow Orange 17 24 20 25 14 Which color contributes most to the chi-square test statistic?     Red A Green B Blue C Yellow D Orange

4 A political poll is assessing the relative strengths of two presidential candidates. A value of + 1 is assigned to every person who states a preference for candidate A and a value of -1 is assigned to anyone who indicates a preference for candidate B.a) Find the sample mean if 60% of those polled indicate a preference for candidate A.b) Write an expression for the sample mean as a function of the sample size and thepercentage of those polled that are in favor of candidate A.c) Find the sample size necessary to estimate the percentage of persons in favor ofcandidate A with a standard deviation no greater than 0. 1 %

A sports company is struggling during corona epidemic. This sports company uses this time in analysis to make profit when time is right. The company was doing analysis of the last digit of their jerseys, which were most sold during the FIFA world cup. The company hires you to test the claim that the last digit of jerseys from the population which has different frequency, SRS of 300 sports fans are randomly selected. The table is formed from the results. Last digit o 1 2 3 |5 |6 |7 36 37 4 8 9 Frequency 30 35 24 25 35 27 27 24 The company assigns you the tasks: 1) What are the observed and expected frequencies for their last digit of 7? Choose one of the following: a) 7.7 b) 27.27 c) 27.30 d) 30.27 e) 7.27