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koban [17]
3 years ago
7

A recent personalized information sheet from your wireless phone carrier claims that the mean duration of all your phone calls w

as μ = 2.9 minutes with a standard deviation of σ = 1.9 minutes. From a random sample of n = 50 ​calls, your parents computed a sample mean of \overline x = 3.6 minutes and a sample standard deviation of s = 2.6 minutes.
Sketch the population distribution for the duration of your phone calls. What are its mean and standard​deviation?
Mathematics
1 answer:
g100num [7]3 years ago
8 0

Answer:

Step-by-step explanation:

answer is 2

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2. For a particular model of a car, a dealer offers 3 sizes of engines, 2 types of stereos, 18 body
Gnesinka [82]

The given details follow the product rule. The different model of the car available are 756.

Given that:

Engines = 3

Stereos = 2

Body=18

Color = 7

The different possibility is calculated using the following product rule:

Total =Engines \times Stereos \times Body \times Color

So, we have:

Total = 3\times 2\times 18 \times 7

Total = 756

Hence, there are 756 different models available.

Read more about product rules at:

brainly.com/question/3944602

3 0
2 years ago
Need help ASAP please
OlgaM077 [116]

Step-by-step explanation:

sue = 18 sweets

tony= 18 sweets

(sue)      S= (18 - x)-5

(tony)     T=(18 + x) ÷ 2

hope this helps :)

6 0
3 years ago
Is 300 mm greater than 3 cm
rewona [7]

Answer:

Yes

Step-by-step explanation:

There are 10 mm in 1 cm.

We have 300 mm, so let's convert this to cm by using a proportion:

\frac{10mm}{1cm} =\frac{300mm}{x} , where x is the number of cm in 300 mm.

Cross-multiplying, we get: 10x = 300, so x = 30 cm.

Clearly, 30 cm > 3 cm, so yes, 300 mm is greater than 3 cm.

Hope this helps!

4 0
3 years ago
Read 2 more answers
The missing credit score was?
Shalnov [3]

Answer:

Wait wattttttttt?

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
The mass of an ornament is m grams.
MArishka [77]

Given:

m is directly proportional to the cube of h.

m = 525 when h= 5.

To find:

The equation connecting m and h.

Solution:

m is directly proportional to the cube of h.

m\propto h

m=kh            ...(i)

Where, k is the constant of proportionality.

Putting m = 525 and h= 5, we get

525=k(5)

\dfrac{525}{5}=k

105=k

Putting k=105 in (i), we get

m=105h

Therefore, the required equation is m=105h.

8 0
2 years ago
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