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
sammy [17]
3 years ago
13

Help me plssssssssss

Mathematics
2 answers:
Gekata [30.6K]3 years ago
8 0
It’s no I’m pretty sure
Semmy [17]3 years ago
4 0

Answer:

no i am assuming

(if its not no please tell me)

Step-by-step explanation:

You might be interested in
. In a study of air-bag effectiveness it was found that in 821 crashes of midsize cars equipped with air bags, 46 of the crashes
jok3333 [9.3K]

Answer:

P(X ≤ 46 | X~B(821, 0.078)) = 0.00885745584

0.00885... < 0.01

The test statistic of 46 is significant

There is sufficient evidence to reject H₀ and accept H₁

Air bags are more effective as protection than safety belts

Step-by-step explanation:

821 crashes

46 hospitalisations where car has air bags

7.8% or 0.078 probability of hospitalisations in cars with automatic safety belts

α = 0.01 or 1% ← level of significance

One-tailed test

We are testing whether hospitalisations in cars with air bags are less likely than in a car with automatic safety belts;

The likelihood of hospitalisation in a car with automatic safety belts, we are told, is 7.8% or 0.078;

So we are testing if hospitalisations in cars with air bags is less than 0.078;

So, firstly:

Let X be the continuous random variable, the number of hospitalisations from a car crash with equipped air bags

X~B(821, 0.078)

Null hypothesis (H₀): p = 0.078

Alternative hypothesis (H₁): p < 0.078

According to the information, we reject H₀ if:

P(X ≤ 46 | X~B(821, 0.078)) < 0.01

To find P(X ≤ 46) or equally P(X < 47), it could be quite long-winded to do manually for this particular scenario;

If you are interested, the manual process involves using the formula for every value of x up to and including 46, i.e. x = 0, x = 1, x = 2, etc. until x = 46, the formula is:

P(X = r) = nCr * p^{r}  * (1 - p)^{n - r}

You can find binomial distribution calculators online, where you input n (i.e. the number of trials or 821 in this case), probability (i.e. 0.078) and the test statistic (i.e. 46), it does it all for you, which gives:

P(X ≤ 46 | X~B(821, 0.078)) = 0.00885745584

Now, we need to consider if the condition for rejecting H₀ is met and recognise that:

0.00885... < 0.01

There is sufficient evidence to reject H₀ and accept H₁.

To explain what this means:

The test statistic of 46 is significant according to the 1% significance level, meaning the likelihood that only 46 hospitalisations are seen in car crashes with air bags in the car as compared to the expected number in car crashes with automatic safety belts is very unlikely, less than 1%, to be simply down to chance;

In other words, there is 99%+ probability that the lower number of hospitalisations in car crashes with air bags is due to some reason, such as air bags being more effective as a protective implement than the safety belts in car crashes.

5 0
3 years ago
The larger of two numbers is 11 more than twice the smaller. The sum of the is 1 less than seven times the smaller. Find the num
algol [13]
I think L=17 and S=3
3 0
3 years ago
A weather balloon is 100,000 feet above sea level, and a submarine is 15,840 feet below sea level, drectly under the weather bal
GarryVolchara [31]

\text{Calculate how far apart the balloon and submarine are from each other}\\\\\text{We know that the balloon is 100,000 feet ABOVE sea level}\\\\\text{We also know that the submarine is 15,840 BELOW sea level}\\\\\text{To find the distance between each other, add the values, since they're}\\\text{farther apart since one's below sea level and one is above sea level}\\\\100,000+15840=115,840\\\\\boxed{\text{Answer: 115,840 feet apart }}

5 0
3 years ago
Which is greater? 2.17 or 2.2
goldfiish [28.3K]

Answer:

2.2

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The measure of angle KMJ??
Irina18 [472]
44

Assuming JM and LN are parallel, KMJ=MKN. MKN is part of a triangle where the other two values are defined (48 and 88). By subtracting these values from 180, we find the value of MKN is 44, which therefore is also the value of KMJ.
3 0
3 years ago
Other questions:
  • Can you help me with this please can you show work please
    14·1 answer
  • What is 14x65?. Whoever answers with detail will be marked brainliest. Plz don't type random. I will give 29 points to solvers!
    13·2 answers
  • Suzanne wants to buy a bicycle that costs $180. If she can save $12 each week, how many weeks will it take her to save enough mo
    5·2 answers
  • Find the inverse of g(x) = 2x^3 +3<br><br> Step by step working please I want to learn
    14·2 answers
  • Dr. Jones has purchase the above equipment at 79,000.00 it is now year two and there is a $7,000.00 annual maintenance fee thst
    7·1 answer
  • Can someone please help me with this I'm on a time limit
    14·2 answers
  • Please answer CORRECTLY !!! Will mark brainliest !!!!!
    10·1 answer
  • A triangle, ABC, has side lengths of 15 in, 28 in and 17 in
    8·2 answers
  • Which pair of functions is not a pair of inverse functions?
    14·1 answer
  • Evaluate the expression: 3a+4<br><br> a = 1.5<br><br> a = 1/3<br><br> a = 2
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!