Mathematics, 07.06.2021 07:10, katelynbychurch
For each example below, state the null and alternative hypotheses.
1. A light bulb manufacture claims that the mean life of a certain light bulb is 750 hours. The three you purchased only lasted 700 hours.
2. As stated by a company’s shipping department, the number of shipping errors per million shipments is 15. Last month, there were 20 errors per million shipments.
3. The mean price of a certain model of car is $30,000, according to commercials. However, you stop by five different dealerships, and each has the car listed for more than $30,000.
4. A research organization reports that 33% of the residents in Ann Arbor, Michigan are college students. It seems “everyone” who lives there attends the University of Michigan though.
5. The results of a recent study show that the proportion of drivers in the United States who wear seat belts when driving is 84%. This number seems “off” to you, and you think it might be a different proportion.
Answers: 2
Mathematics, 21.06.2019 14:00, riptaylorsreputation
7x+8y=-18, 4x-9y=-3 solve the system of equations
Answers: 3
Mathematics, 21.06.2019 23:00, rickespey9037
Rob filled 5 fewer plastic boxes with football cards than basketball cards. he filled 11 boxes with basketball cards.
Answers: 1
For each example below, state the null and alternative hypotheses.
1. A light bulb manufacture clai...
Mathematics, 13.11.2019 08:31
Mathematics, 13.11.2019 08:31
Mathematics, 13.11.2019 08:31
Mathematics, 13.11.2019 08:31
Mathematics, 13.11.2019 08:31