Visitors to a cinema are either children, adults or pensioners. The ratio of children to adults is 1 : 2 The ratio of adults to pensioners is 3 : 4 A stratified example of 85 is to be taken from the cinema visitors. How many pensioners should be in the sample?

For what value of (y) is 3^3/3^y =1/9

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.