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3 years ago

Two pizza delivery drivers compared the mean numbers of deliveries they completed in one day.

Mathematics

2 answers:

Vilka [71]3 years ago

8 0

Answer:

Step-by-step explanation:

OlgaM077 [116]3 years ago

6 0

Answer:

Step-by-step explanation:

Ape x

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A certain academic program boasts that 87% of their graduates find full-time employment in their field within the first year of

WARRIOR [948]

Answer:

Option A, there is not sufficient sample evidence to conclude that the full-time placement rate is now less than 87% because the p-value is greater than 0.05.

Step-by-step explanation:

Here the Null hypothesis would be

H0: 87% of the graduates find full-time employment in their field within the first year of graduation

H1: Less than 87% of the graduates find full-time employment in their field within the first year of graduation

Here the p values is 0.07.

Since the p value is greater than 0.05, there are not enough evidences to reject the hull hypothesis.

Hence, option A is correct

7 0

3 years ago

The rate of change of the volume of a snowball that is melting is proportional to the surface area of the snowball. Suppose the

Alisiya [41]

Answer:

According to the passage, we have the next equation:

$\frac{dV}{dt} = \frac{4}{3}\pi*3*r^{2}*\frac{dr}{dt} = K*(4\pi*r^{2} )$

where "K" is a proportional constant

Leaving at the end with the next equation:

$\frac{dr}{dt} = K$

Integrating the equation, we have:

$r=K*t+C$

where "C" is a constant

Then, we have the 2 conditions for the problem:

1) t=0 → r=10

Replacing in the equation, we have C = 10

2) t=5 → r=8

Replacing in the equation, we have K = -0.4

Finally, the time which the snowball will be completely melted will be when r = 0. So replacing in the equation

$0=-0.4*t+10$

t = 25 minutes

6 0

3 years ago

Please answer this question

NemiM [27]

Step-by-step explanation:

is funtion D

because it is not repeated

3 0

2 years ago

Read 2 more answers

Solve write the differences 505-167=

NISA [10]

Answer:

338 is the difference

Step-by-step explanation:

505-167=338

3 0

3 years ago

How many ways can a person choose 3 desserts from a desserts tray 8 desserts

skelet666 [1.2K]

In combinatorics, this question is a combination question, because combination deals with selection while permutations deal with arrangement.

$nCr = \frac{n!}{(n - r)!r!} \\$

Plugging in our values,

$8C3 = \frac{8!}{(8 - 3)!3!} = \frac{8!}{5!3!} = \frac{8 \times 7 \times 6 \times 5!}{5!3!} = \frac{8 \times 7 \times 6}{3 \times 2} = 56 \\$

That means 3 desserts from a tray of 8 desserts 56 times.

3 0

3 years ago