A researcher believes she has designed a keyboard that is more efficient to use than a standard keyboard. In order to help decide if this is the case, typing speeds were taken for 8 different people on each keyboard. The lengths of time, in minutes, for each of the people to type a pre-selected manuscript are listed below. Assume the two population distributions are normal. Use the data to determine if the original keyboard yields slower times. Use a significance level of = 0.05.
Use the Data Analysis software if you prefer.
Test Statistic = ______________
Reject Region: Reject H₀ if |t| > ______________
Conclusion: ______________
The original keyboard ______________.

Question

A researcher believes she has designed a keyboard that is more efficient to use than a standard keyboard. In order to help decide if this is the case, typing speeds were taken for 8 different people on each keyboard. The lengths of time, in minutes, for each of the people to type a pre-selected manuscript are listed below.

Assume the two population distributions are normal. Use the data to determine if the original keyboard yields slower times. Use a significance level of

= 0.05.
Use the Data Analysis software if you prefer.
Test Statistic = ______________
Reject Region: Reject H₀ if |t| > ______________
Conclusion: ______________
The original keyboard ______________.

Quizplus · Accepted Answer

The Answer of A researcher believes she has designed a keyboard that is more efficient to use than a standard keyboard. In order to help decide if this is the case, typing speeds were taken for 8 different people on each keyboard. The lengths of time, in minutes, for each of the people to type a pre-selected manuscript are listed below. Assume the two population distributions are normal. Use the data to determine if the original keyboard yields slower times. Use a significance level of = 0.05. Use the Data Analysis software if you prefer. Test Statistic = ______________ Reject Region: Reject H₀ if |t| > ______________ Conclusion: ______________ The original keyboard ______________.

A Researcher Believes She Has Designed a Keyboard That Is