see below 6 questions

1.) Two teams of workers assemble automobile engines at a manufacturing plant in Michigan. A random sample of 145 assemblies from team 1 shows 15 unacceptable assemblies. A similar random sample of 125 assemblies from team 2 shows 8 unacceptable assemblies. Is there sufficient evidence to conclude, at the 10% significance level, that the two teams differ with respect to their proportions of unacceptable assemblies?

A .No, since the test value exceeds the critical value
B .No, since the test value does not exceed the critical value
C .No, since the p-value is less than 0.10
D .Yes, since the p-value is greater than 0.10 Correct answer is_____?_____

2.) A field researcher is gathering data on the trunk diameters of mature pine and spruce trees in a certain area.  The following are the results of his random sampling.  Can he conclude, at the 0.10 level of significance, that the average trunk diameter of a pine tree is greater than the average diameter of a spruce tree?

	Pine trees	Spruce trees
Sample size	25	35
Mean trunk diameter (cm)	55	48
Sample variance	100	140

What is the test value for this hypothesis test? Test value:___?______   Round your answer to three decimal places. What is the critical value? Critical value:___?_______   Round your answer to three decimal places.

3.) The marketing manager of a large supermarket chain would like to determine the effect of shelf space (in feet) on the weekly sales of international food (in hundreds of dollars). A random sample of 12 equal –sized stores is selected, with the following results:

Store	Shelf Space(X)	Weekly Sales(Y)
1	10	2.0
2	10	2.6
3	10	1.8
4	15	2.3
5	15	2.8
6	15	3.0
7	20	2.7
8	20	3.1
9	20	3.2
10	25	3.0
11	25	3.3
12	25	3.5

Using the equation of the regression line for these data, predict the average weekly sales (in hundreds of dollars) of international food for stores with 13 feet of shelf space for international food.

Place your answer, rounded to 3 decimal places, in the blank.  Do not use a dollar sign.  For example, 2.345 would be a legitimate entry______?_____

4.) Data for a sample of 25 apartments in a particular neighborhood are provided in the worksheet Apartments in the Excel workbook Apartments.xlsx. Using the estimated regression equation found by using size as the predictor variable, find a point estimate for the average monthly rent for apartments having 1,000 square feet of space. Place your answer, rounded to the nearest whole dollar, in the blank.____?______ When entering your answer do not use any labels or symbols. Simply provide the numerical value. For example, 123 would be a legitimate entry.