Develop the null and alternative hypotheses to determine

Reference no: EM13632652

Boston public school district has had difficulty maintaining on-time bus service for its students ("A Year Later, School Buses Still Late," Boston Globe, October 5, 2011). Suppose the district develops a new bus schedule to help combat chronic lateness on a particularly woeful route. Historically, the bus service on the route has been, on average, 12 minutes late. After the schedule adjustment, the first 36 runs were an average of 8 minutes late. As a result, the Boston public school district claimed that the schedule adjustment was an improvement-students were not as late. Assume a population standard deviation for bus arrival time of 12 minutes.

Develop the null and alternative hypotheses to determine whether the schedule adjustment reduced the average lateness time of 12 minutes.

Reference no: EM13632652

Questions Cloud

What are the roles of financial intermediaries : what are the roles of financial intermediaries differentiate between direct and indirect

Last year the records of dairy land inc a convenience store : last year the records of dairy land inc. a convenience store chain showed the mean amount spend by a customer was 30. a

The mean assembly time for a random sample of 36 carts : the management of abc industries is considering a new method of assembling its golf cart. the present method requires

A random sample of 15 accounting graduates indicated on : a random sample of 15 accounting graduates indicated on average they had taken 139 credit units with a standard

Develop the null and alternative hypotheses to determine : boston public school district has had difficulty maintaining on-time bus service for its students a year later school

The manager of a video library would like the variance of : the manager of a video library would like the variance of the waiting times of the customers not to exceed 2.30

In the past year 17 of local businesses have eliminated : in the past year 17 of local businesses have eliminated jobs. if 25 businesses are randomly selected what is the

Four samples of water were taken at five different : four samples of water were taken at five different locations along a river and measurements were obtained of the amount

You go to a store to get ice-cream there are five types of : 1. you go to a store to get ice-cream. there are five types of cones three types of ice-cream and six kinds of

User Account

All Pages