in the 6th grade, 48 students brought a ham and cheese sandwich for lunch. if this number represents 32% of the total of student
1 answer:
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Answer:
44 square units
Step-by-step explanation:
The area of a trapezoid with bases b₁ and b₂ and height h is given by the formula
If you're wondering how we get this formula, check the attached illustration (remember the area of a parallelogram is its base multiplied by its height)! Moving on to our trapezoid, the pairs of points (-5,-3)(4,-3) and (6,-7)(-7,-7) form two horizontal segments, which form b₁ and b₂, and our height is the distance between the y-coordinates -3 and -7, which is 4. We can find b₁ and b₂ by finding the distance between the x coordinates in their pairs of points:
Putting it altogether:
So the area of our trapezoid is 44.
Answer:
We have a right tailed test then the p value would be:
Step-by-step explanation:
Information provided
n=497 represent the random sample of homes selected
X=340 represent the number of homes with one or more lawn
estimated proportion of homes with one or more lawn
is the value that we want to test
z would represent the statistic
represent the p value (variable of interest)
System of hypothesis
We want to check if proportion of homeowners owning lawn mowers in charlotte is higher than 65%m so then the correct hypothesis are .:
Null hypothesis:
Alternative hypothesis:
The statistic is given by:
(1)
Replacing the info given we got:
We have a right tailed test then the p value would be: