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Tomtit [17]
2 years ago
15

A random sample of 10 sales receipts for internet sales results in a mean sale amount of $66.30 with a standard deviation of $15

.75. Using this data, find the 98% confidence interval for the true mean difference between the mean amount of mail-order purchases and the mean amount of internet purchases. Assume that the population variances are not equal and that the two populations are normally distributed. Step 1 of 3 : Find the point estimate that should be used in constructing the confidence interval.
Mathematics
1 answer:
slavikrds [6]2 years ago
6 0

Answer:

ur mum s house

Step-by-step explanation:

myueudifigkgkgogkvkcv

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Michael rotates ABC to form the image A'B'C'. The table shows the corresponding vertices for ABC and AA'B'C'. What degree of rot
babunello [35]

Answer:

90 degree rotation in the clockwise direction.

Step-by-step explanation:

Point A transforms to A'

- that is x coordinate: 2 ---> 3

and y coordinate   3 ---> -2

So the rotation is clockwise from Quadrant1 to Quadrant 4.

The slope of OA = 3/2 and the slope of OA' = -2/3.

The product of these slopes = 3/2 * -2/3 = -1 so the lines are perpendicular - that is the line has passed through an angle of 90 degrees.

A similar result occurs if we consider points B, C and D.

3 0
3 years ago
If 8 = 54 and v = 17, Find m.
zhenek [66]

Answer:

What is the m part?

Step-by-step explanation:

8 0
3 years ago
A map of a new dog park shows that it is triangular and that the sides measure 18.5m, 36.9m, and 16.9m. Are the dimensions corre
r-ruslan [8.4K]
In order to check whether the length of the sides are applicable to form a triangle is that we have to make sure that the sum of the length of two side should be greater than the third side.

<span>18.5 m, 36.9 m, and 16.9 m
18.5 m < </span><span>36.9 m +16.9 m
</span>36.9 m < 18.5<span> m +16.9 m
</span>16.9 m < 18.5 m + <span>36.9 </span>m

So the dimensions are correct!
5 0
3 years ago
Draw and lable a pentagon and a quadrilateral
Drupady [299]
Ok sweetie so the pentagon is the shape of a house like the first picture and quadrilateral  shapes are these on the second file attached to this answer

hope i helped in any shape or form so... have a great day and goodluck on you thing

5 0
3 years ago
How do i deleted a question on here lol
shtirl [24]
I don’t think you can lol
8 0
3 years ago
Read 2 more answers
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