Suppose you want to test if left-handed individuals have a higher IQ than right-handed individuals. You conduct a study from 250 students, of which 140 are left-handed. After subjecting each student to an IQ test, you find that left-handed individuals score 108.3 with a standard deviation of 13.2, and right-handed individuals score 107.1 with a standard deviation of 11.6. The null hypothesis is that left- and right-handed individuals have the same IQ. The alternative hypothesis is that left-handed individuals have higher IQs. Using a size of the test of 5%, what is your conclusion

idk

step-by-step explanation: i just don't

answer: h

step-by-step explanation:

it is x=-4

step-by-step explanation:

d. $180

step-by-step explanation:

if the dimensions of the room is 9ft by 12 ft, we have the area of the floor as,

so the area of the floor is 108 square feet, converting that into square yards we get,

the cost of carpet is $15 per square yard, therefore the cost of carpet for 12 square yards is,

hence, the cost of carpet is $180.

assuming the dimensions of the room be,

15 ft by 12 ft

so, the area of the floor of that room is,

we can convert 180 square feet into square yards, we know that,

1 sq ft = 0.111 sq yard

so, 180 square feet is,

so the area of floor is 20 square yards.

now, the cost of carpet is 15 dollars per square yard, therefore the cost of carpet for 20 square yards is,

so, it will cost $300.