### Probability that a sample of batteries

Assignment Help Basic Statistics
##### Reference no: EM131954582

NeverReady batteries has engineered a newer, longer lasting AAA battery. The company claims this battery has an average life span of 16 hours with a standard deviation of 0.7 hours. Your statistics class questions this claim. As a class, you randomly select 30 batteries and find that the sample mean life span is 15.7 hours. If the process is working properly, what is the probability of getting a random sample of 30 batteries in which the sample mean lifetime is 15.7 hours or less? Is the company's claim reasonable? (Round your probability to four decimal places.)

The company's claim is not reasonable because the probability that a sample of 30 batteries would have a lifetime of at most 15.7 hours is about _______________?

### Write a Review

#### System with an irrational transfer function

Consider a system with an irrational transfer function (s). Show that a necessary condition for the system to be BIBO stable is that |(s)| is finite for all Re

#### Use the least squares regression line from question 1

use the least squares regression line from question 1. 70.509 0.293 circumference one man had his waist circumference

#### What is the probability the reds win all 3 games

In each game the probability that the Reds win is 0.52. The probability of the Reds winning is not affected by who has won any previous games.

#### Five-step process for hypothesis testing

"What is the five-step process for hypothesis testing? Is the order important? Why or why not?"

#### Create a linear model for weight lifted in each weight class

Lifting more weight 2004. In Exercise you examined the winning weight-lifting performances for the 2004 Olympics. One of the competitors turned in performance.

#### Probability of assembling the product

The assembly time for a product is uniformly distributed between 6 to 10 minutes. The probability of assembling the product between 7 to 9 minutes is

#### In a physics class alex and mike were performing a

in a physics class alex and mike were performing a hypothesis test concerning the mean amount of static electricity in

#### Determination of statistical significance

Determination of statistical significance can only be determined by calculating the exact p value and declaring results as significant. True or false?

#### Is this a repeated-measures design or a matched-pairs design

Teacher perceptions of children with cancer. Liang, Chiang, Chien, and Yeh (2007) tested whether teachers for children with cancer (case) perceived.

#### Draw tree diagram to describe the outcomes for the two cards

Draw a tree diagram. Refer to Slim's chances of a flush in given Exercise. Draw a tree diagram to describe the outcomes for the two cards that he will be dealt.

#### Assuming a two-tailed test with alpha 05 how large a

question assuming a two-tailed test with alpha .05 how large a correlation is needed to be statistically significant

#### The route used by a certain motorist in commuting to work

the route used by a certain motorist in commuting to work contains two intersections with traffic signals. the