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Yuki888 [10]
1 year ago
12

While measuring specimens of nylon yarn taken from two spinning machines, it was found that 9 specimens from the first machine h

ad a mean denier of 9.17 with a standard deviation of 1.81, while 12 specimens from the second machine had a mean denier of 7.33 with a standard deviation of 1.48. Test at the 0.05 level of significance that the mean denier of the first machine is higher than that of the second machine by at least 1.5.
Mathematics
1 answer:
stepladder [879]1 year ago
8 0

kaaaaaaaaaaaaaaaaabbbichaStep-by-step explanation:

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5.
andrew-mc [135]

Answer:

The  angle of depression from Platform A to Platform B is 43.1^{\circ}

Step-by-step explanation:

Refer the attached figure

The horizontal distance between the  platforms is 500 feet i.e. BC = 500

The length of the zip-line is 685 feet i.e. AB = 685

We are supposed to find the  angle of depression from Platform A to Platform B

Hypotenuse = 685

Base = 500

Cos \theta = \frac{Base}{Hypotenuse}\\Cos \theta = \frac{500}{685}\\\theta = cos^{-1}(\frac{500}{685})\\\theta = 43.11^{\circ}

Hence  the  angle of depression from Platform A to Platform B is 43.1^{\circ}

4 0
2 years ago
A plane intersects a prism parallel to the base of the prism. The cross section is a polygon with eight sides. The base of the p
Ksenya-84 [330]
I'm not quite sure but I believe the answer to your question is 4 sides
7 0
2 years ago
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there are two pizzas. conor ate 1⁄4 of a pizza, brandon 2⁄8, tyler 3⁄4, and audrey 4⁄8. who ate the most of the two pizzas? a. a
Sindrei [870]
The best way to determine which among the fractions has the greatest value, convert all of them to their decimal equivalents. To do so, divide the numerator by the denominator. Conor ate 0.25 of the pizza, Brandon also 0.25, Tyler 0.75, and Audrey 0.5. Thus, the answer is letter "B. Tyler".
7 0
1 year ago
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An uncooked gingerbread cookie is y centimeters long. After it is baked, the length of the
marusya05 [52]

Answer:

I think the answer is C

Step-by-step explanation:

If you have a normal ginger bread cookie, its full size would be 100%. So, if you add the first 25%, 1.25%

3 0
2 years ago
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Alessandro wrote the quadratic equation –6 = x2 + 4x – 1 in standard form. What is the value of c in his new equation?
garri49 [273]
X^2+4x-1+6=0
x^2+4x+5=0
c=5
c is 5
8 0
2 years ago
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