The box plot shows the number of raisins found in sample boxes from Brand C and from Brand D. Each box weighs the same. Which statement is TRUE when comparing the interquartile range (IQR) of the data?

A)

The interquartile range shows that the average number of raisins in the boxes is 28.

B)

The interquartile range shows the same spread in the middle-half of the data for both brands.

C)

The interquartile range shows a greater spread in the middle-half of the data for Brand C.

D)

The interquartile range shows a greater spread in the middle-half of the data for Brand D.

Atechnician compares repair costs for two types of microwave ovens (type i and type ii). he believes that the repair cost for type i ovens is greater than the repair cost for type ii ovens. a sample of 6767 type i ovens has a mean repair cost of $79.79$⁢79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$⁢19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$⁢75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$⁢21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let μ1μ1 be the true mean repair cost for type i ovens and μ2μ2 be the true mean repair cost for type ii ovens. step 2 of 4 : compute the value of the test statistic. round your answer to two decimal places.