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 eight different people on each keyboard, new and standard original. The lengths of time, in minutes, for each of the people to type a preselected 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 $\alpha$= 0.05.

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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 eight different people on each keyboard, new and standard original. The lengths of time, in minutes, for each of the people to type a preselected 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 $\alpha$= 0.05.

A Researcher Believes She Has Designed a Keyboard That Is α\alphaα

A Researcher Believes She Has Designed a Keyboard That Is $\alpha$