1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
omeli [17]
3 years ago
9

Decide if the situation involvesâ permutations, combinations, or neither. explain your reasoning.

Mathematics
1 answer:
QveST [7]3 years ago
8 0
It needs permutations of the order does matter, like 3 people ordering from a coffee shop to see who goes first.

Combinations are when the order doesn't matter, like if you had 3 numbers behind your back and you had to guess the 3 not in order

It needs neither when you don't need to find the amount of choices you have (or something similar) for something
You might be interested in
Dominic took a 20-question online quiz. He received 5 points for every correct answer. For every
Gennadij [26K]

Answer:

X+20=2 i think this is a little above my head

8 0
3 years ago
An insurance company states that it settles 85% of all life insurance claims within 30 days. A consumer group asks the state ins
BlackZzzverrR [31]

Using the z-distribution, it is found that since the p-value of the test is less than 0.05, we reject the null hypothesis and find that there is enough evidence to conclude that the true proportion of all life insurance claims made to this company that are settled within 30 days is less than 85%.

<h3>What are the hypothesis tested?</h3>

At the null hypothesis, it is tested if there is not enough evidence that the proportion is below 85%, that is:

H_0: p \geq 0.85

At the alternative hypothesis, it is tested if there is enough evidence that the proportion is below 85%, that is:

H_0: p < 0.85

<h3>What is the test statistic?</h3>

The test statistic is given by:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

In which:

  • \overline{p} is the sample proportion.
  • p is the proportion tested at the null hypothesis.
  • n is the sample size.

For this problem, the parameters are:

p = 0.85, n = 250, \overline{p} = \frac{203}{250} = 0.812

Hence the test statistic is:

z = \frac{\overline{p} - p}{\sqrt{\frac{p(1-p)}{n}}}

z = \frac{0.812 - 0.85}{\sqrt{\frac{0.85(0.15)}{250}}}

z = -1.68

<h3>What is the p-value and the conclusion</h3>

Using a z-distribution calculator, with a left-tailed test, as we are testing if the proportion is less than a value, and z = -1.68, the p-value is of 0.0465.

Since the p-value of the test is less than 0.05, we reject the null hypothesis and find that there is enough evidence to conclude that the true proportion of all life insurance claims made to this company that are settled within 30 days is less than 85%.

More can be learned about the z-distribution at brainly.com/question/16313918

#SPJ1

4 0
1 year ago
F(n+1)=f(n)-8 if f(1)=100 what is f(6)
Svet_ta [14]

f(n+1)=f(n)-8\\\\ f(2)=100-8=92\\ f(3)=92-8=84\\ f(4)=84-8=76\\ f(5)=76-8=68\\ f(6)=68-8=60

8 0
3 years ago
What is the median of 30,33,38,40,51,57,81,91?
enot [183]

Answer:{ \left[\begin{array}{ccc}45.5\\\\\end{array}\right] }{}\\\\\end{array}\right] } ----

Step-by-step explanation: Hey, Basically we are going to arrange the data in an ascending order and the median is the middle value. If the number of values is an even number, the median will be the average of the two middle numbers.

Hope this helps!

4 0
3 years ago
Write 2x+y=17 in slope-intercept form
Harlamova29_29 [7]

Answer:

y=-2x+17

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • A store sells 1/2 pound of beef for $1.50. If you are having a party and need 8 pounds for hamburgers, using the unit rate, how
    15·2 answers
  • What is the median of 1.99 2.99 3.89 3.99
    12·2 answers
  • Jonah's family is ordering dinner. Each adult meal costs $8.50, each kid meal costs $6.75, and
    14·1 answer
  • What is the final amount if 943 is decreased by 13% followed by a further 6% decrease?
    5·1 answer
  • Two S-year old girls, Alyse and Jocelyn, have been training to run a mile racc Alyse's I mile A is approximately Normally distri
    14·1 answer
  • (3² - 2²) ³ + 42 ÷ 6 x 3² - 9
    9·2 answers
  • Marcus believes he can score a goal at least 70% of the time.He runs a simulation where he tracks the number of successful goals
    15·1 answer
  • А
    12·1 answer
  • The mayor of a city believes a large park in the city is becoming more popular and wants to expand nature programs at the park.
    14·1 answer
  • What is the answer for <br><br> 2ab(xa^9+ya^3-6)
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!