Students t test for hypothesis testing

Assignment Help Basic Statistics

Reference no: EM13107456

A consumer electronics firm has developed a new type of remote control button that is designed to operate before becoming intermittent. A random sample of 25 of new buttons resulted in a mean of 1,241.2 hours of continuous service with a standard deviation of 110.8 hours. The current best remote control button in the market has a mean life of 1200 hours.

Can we conclude that the new remote control button is superior to the current best product in the market at a 95% confidence level?

Each patient of Aloha Memorial Hospital is asked to evaluate the service at the time of release. Recently there have been complaints that resident physicians and nurses on the surgical wing respond too slowly to calls of senior citizens. In fact, it is claimed that the other patients receive faster service. Mr. Armstrong, president of the hospital, asked the quality assurance department to investigate. After studying the situation, the quality assurance department collected the following data.

Patient Type Sample mean Sample Standard Deviation Sample Size

Senior citizen 5.50 minutes 0.40 minutes 50

Other 5.30 minutes 0.30 minutes 100

Is it reasonable to conclude the mean response time is longer for the senior citizen cases at a 99% confidence level?

Reference no: EM13107456

Questions Cloud

Doctrine action as an exception to the elements : How does this doctrine action as an exception to the elements as well as requirements of a contract? Why does this doctrine exist?

What are the total pressure in the flask : What are the total pressure in the flask and the partial pressure of HOF after exactly 30 minutes and After 45 minutes If the partial pressure of HOF in a 1.00-L flask is initially1.00 × 10 2 mm Hg at 25 °C?

Students t-test for furniture store data : A furniture store claims that a specially ordered product will take, on average, M = 35 days (5 weeks) to arrive. The standard deviation of these waiting times is 8 days.

Standard solution of ethylene diaminetetraacetic : Determine How much Na2EDTA x 2 H2O must be weighed to form exactly two litres of 0.0500 M solution? FW=372.24

Students t test for hypothesis testing : A consumer electronics firm has developed a new type of remote control button that is designed to operate before becoming intermittent.

Contract for sale be cancelled because of fraud : Intentional Concealment- Gortino while trying to sell his house to Stein, was asked if he had ever seen or suspected termites in the house

Compare and contrast benefit cost and cost effectiveness : Compare and contrast benefit-cost, cost-effectiveness, and cost-utility analysis and determine which is the most useful to assess the value of health care services overall. Provide specific examples to support your response.

Explain program manager for human services program : Write down 200- to 300-word email to friend describing new position and its responsibilities, incorporating all vocabulary words.

One sample t test-question : A shipment of crankshafts is believed to be defective. A simple random sample of 16 is drawn from a large shipment. Check to see if the sample is any different from the assumed population mean of 224.

User Account

All Pages