Reference no: EM132399918

Assembly Time: In a sample of 35 adults, the mean assembly time for a child's swing set was 1.78 hours with a standard deviation of 0.75 hours. The makers of the swing set claim the average assembly time is less than 2 hours. Test their claim at the 0.01 significance level. (a) What type of test is this?

This is a two-tailed test.

This is a right-tailed test.    

This is a left-tailed test.

(b) What is the test statistic? Round your answer to 2 decimal places.

t_x =

(c) Use software to get the P-value of the test statistic. Round to 4 decimal places.

P-value =

(d) What is the conclusion regarding the null hypothesis?

reject H₀

fail to reject H₀    

(e) Choose the appropriate concluding statement.

The data supports the claim that the mean assembly time is less than 2 hours.

There is not enough data to support the claim that the mean assembly time is less than 2 hours.     

We reject the claim that the mean assembly time is less than 2 hours.

We have proven that that the mean assembly time is less than 2 hours.