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7nadin3 [17]
2 years ago
10

A bus stops at a bus stop every 45 minutes. Once a person gets to the bus stio, what is the probability they will wait for no mo

re than 20 minutes?
Mathematics
1 answer:
sesenic [268]2 years ago
3 0

Answer:

≈ 44.4%%%

Step-by-step explanation:

The person will wait for no more than 20 minutes if they arrive when the bus is going to stop in 20 minutes, which means that they must arrive 25 minutes after the previous bus stops. So the probability that the person will not wait for more than 20 minutes will be \frac{20}{45} which is about 44.4%.

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Jane wants to estimate the proportion of students on her campus who eat cauliflower. after surveying 39 ​students, she finds 4 w
stellarik [79]

Let x be the number of students who eat cauliflower.

Therefore, x=4.

Let n be the total number of students surveyed.

Therefore, n=39

Thus, \hat p=\frac{4}{39} =0.10256

Now, for 90% confidence level, from the table we know that Z=1.645.

The formula for the interval range of proportion of students is :

p= \hat p\pm Z\sqrt{\frac{\hat p(1-\hat p)}{n}}

Plugging in the values we get:

p=0.10256\pm 1.645\sqrt{\frac{0.10256(1-0.10256)}{39}}=0.10256\pm 0.04858=0.15114, 0.05398

Thus, Jane is 90% confident that the population proportion p, for students who eat cauliflower in her campus is between 5.398% and 15.114% (after converting the answer we got to percentage).

7 0
3 years ago
Cody and Tyler were once the same height. Since then, Tyler's height has increased by 20%, while Cody has grown half as much. If
vlabodo [156]

answer: he is really short lol (JK ignore this answer, look at the answer below)

Answer:

24 inches

Step-by-step explanation:

how many inches tall is Cody now?

since Cody grew half as much he is 2 feet tall now, which is 24 inches(it's asking for the answer in inches so do not put feet).

1 feet = 12 inches.

2 feet = 24 inches.

<em><u>Ace Carlos</u></em>

5 0
2 years ago
Read 2 more answers
How is the number 2 in 582 similar to the 2 in the number 528
7nadin3 [17]
In the number 582, the 2 has a value of 2.
In the number 528, the 2 has a value of 20.

Similarities...
1) Both divisible by 2.
2) Both divisible by 1.
3) Both are even numbers.
4 0
3 years ago
Read 2 more answers
What is the height of a trapezoid with an area of 99 in.2 whose bases are 6 in. and 12 in.?
vladimir1956 [14]

Answer:

trapezoid area = ((sum of the bases) ÷ 2) • height

trapezoid area = ((6 + 12) / 2) * height

trapezoid area = 18 / 2 * height

height = 99/9 = 11

Step-by-step explanation:

7 0
3 years ago
Will give brainliest
Katen [24]

Answer:

Trapezoid

Step-by-step explanation:

The two sloped opposite sides are congruent. The two uncongruent opposite sides are parallel. There are no right angles. You can do this by finding the distance and slopes of the lines.

Not triangle because has four vertices.

3 0
2 years ago
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