3} What typels] of sample would be appropriate for the following: {the choices are: stratified sample, simple random sample, convenience sample, voluntary-response sample} a) a survey of engineers, technicians, and managers employed by a company? b) determining the most popular pizza topping? c) measuring customer satisfaction for a department store? 9} A magazine company is conducting a survey for 5000 Customers. The company will only sample 50 customers. What is the sampling interval for this situation? 10) Which of the following is an iterative process? a) the cycle of a washing machine , b) a chart of sunrise and sunset times I . \\ c} substituting a value for the variable in a quadratic equation