9.4 Exit Ticket - t-tests

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The engineers at an ice-cream company are considering purchasing an upgraded version of a manufacturing unit to reduce production times. They obtain the upgraded unit on a one week loan and take a sample of production times (in hours) from both the old and new production units.

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The engineers wish to carry out a t-test to determine whether the upgraded unit has lower average production times than the older unit. The significance level of the test is set at 5%.

Round your answers to 3 significant figures.

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Define the variables.
u1= , u2=

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9.4 Exit Ticket - t-tests

Define the variables.
u1= , u2=

Define the variables.
u1= , u2=

State the null hypothesis.

State the alternative hypothesis.

Find the p value.

State, giving a reason, whether the engineers should buy the upgraded unit or not.

State the null hypothesis.

State the alternative hypothesis.

Find the p value.

State, giving a reason, whether the engineers should buy the upgraded unit or not.

9.4 Exit Ticket - t-tests

Define the variables.u1= , u2=

Define the variables.u1= , u2=

State the null hypothesis.

State the alternative hypothesis.

Find the p value.

State, giving a reason, whether the engineers should buy the upgraded unit or not.

State the null hypothesis.

State the alternative hypothesis.

Find the p value.

State, giving a reason, whether the engineers should buy the upgraded unit or not.

Define the variables.
u1= , u2=

Define the variables.
u1= , u2=