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
Yuri [45]
3 years ago
7

Please help. thx a bunch

Mathematics
2 answers:
Naily [24]3 years ago
7 0

Answer:

ez

Step-by-step explanation:

Aleks [24]3 years ago
3 0
0.55 HOPE THIS HELPS!
You might be interested in
The operation manager at a tire manufacturing company believes that the mean mileage of a tire is 48,564 miles, with a standard
DerKrebs [107]

Answer:

0.0091 = 0.91% probability that the sample mean would be less than 48,101 miles in a sample of 281 tires if the manager is correct

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central limit theorem:

The Central Limit Theorem estabilishes that, for a random variable X, with mean \mu and standard deviation \sigma, the sample means with size n of at least 30 can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}

In this problem, we have that:

\mu = 48564, \sigma = 3293, n = 281, s = \frac{3293}{\sqrt{281}} = 196.44

What is the probability that the sample mean would be less than 48,101 miles in a sample of 281 tires if the manager is correct?

This is the pvalue of Z when X = 48101. So

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{48101 - 48564}{196.44}

Z = -2.36

Z = -2.36 has a pvalue of 0.0091

0.0091 = 0.91% probability that the sample mean would be less than 48,101 miles in a sample of 281 tires if the manager is correct

6 0
2 years ago
I have a test and only have an hour please hurry! <br><br><br><br> 90 / 3* (9 +6)=?
Alex777 [14]
90/3=30 30*(15)=450 450 is your answer.
5 0
3 years ago
Read 2 more answers
Jessica prepared 36 kilograms of dough after working 6 hours. How much dough did Jessica prepare if she worked for 8 hours? Assu
Pepsi [2]

Answer:

48

Step-by-step explanation:

because 36 divided by 6 is 6 and that is how much dough she produces in an hour so if you added two more 6s to 6 to make it 8 meaning you are adding 12 because that is how much dough she makes in an hour

5 0
2 years ago
BRANLIEST and point for best answer
I am Lyosha [343]
None because it’s day light
6 0
3 years ago
Marvin used a customary unit of measure to estimate the weight of a watermelon he grew in his backyard what could the estimated
Andrej [43]

Answer:

Usually pounds (lb) .About an an average of  20 to 25 pounds (lbs)

Step-by-step explanation:

Since Marvin uses Customary units, and considering the Watermelon.

Pounds,  He could estimate based on average of 20 to 25 pounds.

He could choose another customary units, but it wouldn't be practical and unusual to say a watermelon of 160 quarters, also it would leave all the listeners without parameters.

So, definitely pounds.

3 0
3 years ago
Other questions:
  • Prime factorization of 50
    11·1 answer
  • What are the answers
    7·1 answer
  • How to find the madian if the two numbers are 5and8
    10·2 answers
  • How do I work this. I have no idea what to do
    11·1 answer
  • A tea that is 20% jasmine is blended with a tea that is 15% jasmine. How many pounds of each tea are used to make 5lb of tea tha
    7·1 answer
  • HEY CAN ANYONE PLS ANSWER DIS MATH PROBLEM!
    5·2 answers
  • What is the value of the expression (5) 3​
    10·2 answers
  • Find the volume and the total surface area of a cuboide whose dimension 2m, 80cm and 60cm​
    7·1 answer
  • My answer is correct ?
    13·1 answer
  • … I don’t know what to say but the question on the photo I sent pls help me it’s due in 30 MINUTES!!!
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!