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jonny [76]
2 years ago
7

A meteorologist reports that there is a 30% chance the temperature will fall below freezing tomorrow. On any given day, the bus

has a 60% chance of being late.
Assuming the bus travels independently of temperature, what is the probability that a passenger would be waiting for a late bus in freezing weather?
Mathematics
1 answer:
sladkih [1.3K]2 years ago
4 0
<h3>Answer:  18%</h3>

===========================================================

Explanation:

Convert each percentage to decimal form

  • 30% converts to 0.30
  • 60% converts to 0.60

Then multiply the decimal values

0.30*0.60 = 0.18

That converts to 18%

So there's an 18% chance that both events happen at the same time. In other words, there's an 18% chance of the temperature falling below zero and the bus being late.

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A thermos in the shape of a cylinder is filled with coffee. The height of the cylinder is 12 inches and its radius is 2 inches.
dolphi86 [110]

Answer:

V =150.8 in ^3

Step-by-step explanation:

V=πr^2h

V = pi * (2^2) * 12

V =3.14159 * 4*12

V =150.7964474 in^3

to the nearest tenth

V =150.8 in ^3

4 0
3 years ago
Read 2 more answers
Construct a​ 95% confidence interval for the population​ mean, mu. Assume the population has a normal distribution. A random sam
aniked [119]

Given Information:  

Number of lithium batteries = n = 16

Mean life of lithium batteries = μ = 645 hours

Standard deviation of lithium batteries = σ = 31 hours

Confidence level = 95%  

Required Information:  

Confidence Interval = ?

Answer:  

CI = 628.5 \: to \: 661.5 \: hours

Step-by-step explanation:  

The confidence interval is given by

CI = \mu \pm t_{\alpha/2} (\frac{\sigma}{\sqrt{n}})

Where μ is the mean life of lithium batteries, σ is the standard deviation, n is number of lithium batteries selected, and t is the critical value from the t-table with significance level of

tα/2 = (1 - 0.95) = 0.05/2 = 0.025

and the degree of freedom is

DoF = n - 1 = 16 - 1 = 15

The critical value (tα/2) at 15 DoF is equal to 2.131 (from the t-table)

CI = 645 \pm 2.131(\frac{31}{\sqrt{16}})

CI = 645 \pm 2.131(7.75})

CI = 645 \pm 16.515

CI = 645 - 16.515 \: and \: 645 + 16.515

CI = 628.5 \: to \: 661.5 \: hours

Therefore, the 95% confidence interval is 628.5 to 661.5 hours

What does it mean?

It means that we are 95% confident that the mean life of 16 lithium batteries is within the interval of (628.5 to 661.5 hours)

6 0
3 years ago
What additional information is obtained by measuring two individuals on an ordinal scale compared to a nominal scale
velikii [3]

The direction of the difference between the 2 measurements.

<h3>What is nominal and ordinal scale with example?</h3>
  • Examples of data for a nominal scale include a person's gender, ethnicity, and hair color.
  • On the other hand, an ordinal scale requires putting data in a certain order, or in relation to one another and "ranking" each parameter (variable).

<h3>What is the difference nominal and ordinal?</h3>
  • Ordinal data has a preset or natural order, whereas nominal data is categorized without a natural order or rank.
  • A number that can be measured, however, will always be present in numerical or quantitative data.

<h3>What is an example of a ordinal scale?</h3>
  • First place would go to a student with a score of 99 out of 100; third place would go to a student with a score of 92 out of 100; and so on.

Learn more about ordinal scale and  nominal scale here:

brainly.com/question/15998581

#SPJ4

8 0
1 year ago
Which function has the same y-intercept as the function?<br>​
rosijanka [135]

Answer:

6x -7y = 21

Step-by-step explanation:

The y-intercept of a line is the y value when x = 0. In the equation y = \frac23 x -3 \\, we can solve for its equation when we plug in x = 0.

Solving for y when x = 0:

y = \frac23 x -3 \\ y = \frac23 (0) -3 \\ y = -3.

So the y-intercept of the equation y = \frac23 x -3 \\ is -3.

To find what equation has the same y-intercept, we can do the same process for each equations given by the choices. However, I can see that the equation, 6x -7y = 21, has the y-intercept. If in doubt, you can check for the solution below or solve each equations for yourself.

Solving for y when x = 0:

6x -7y = 21 \\ 6(0) -7y = 21 \\ 0 -7y = 21 \\ -7y = 21 \\ \frac{-7y}{-7} = \frac{21}{-7} \\ y = -3

8 0
2 years ago
Enoch is two times as old as MARTIN.three years ago,the difference between their ages was fifteen years.find their present ages
olga2289 [7]

9514 1404 393

Answer:

  • Enoch is 30
  • Martin is 15

Step-by-step explanation:

The difference in ages remains the same over time. Enoch, at twice Martin's age, is still 15 years older. That means Martin is 15 and Enoch is 30.

5 0
3 years ago
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