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
mash [69]
2 years ago
9

It takes Ashton 40 minutes to read 50 pages. If

Mathematics
1 answer:
viva [34]2 years ago
5 0
It will take her 2,000 minutes
You might be interested in
Jumbo eggs in Australia, on average, are supposed to weigh 68g. Margot is in charge of a quality control test that involves weig
Andrej [43]

Answer:

0.9987 = 99.87% probability that the mean weight of 4 eggs in a package is less than 68.5g

Step-by-step explanation:

To solve this question, we use the normal probability distribution and the central limit theorem.

Normal Probability Distribution:

Problems of normal distributions 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 normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean weight of 67g and a sample standard deviation of 1g.

This means that \mu = 67, \sigma = 1

Sample of 4

This means that n = 4, s = \frac{1}{\sqrt{4}} = 0.5

What is the probability that the mean weight of 4 eggs in a package is less than 68.5g?

This is the pvalue of Z when X = 68.5. So

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

By the Central Limit Theorem

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

Z = \frac{68.5 - 67}{0.5}

Z = 3

Z = 3 has a pvalue of 0.9987

0.9987 = 99.87% probability that the mean weight of 4 eggs in a package is less than 68.5g

6 0
3 years ago
Read 2 more answers
7 1/2 lb =_oz<br> please help me
KonstantinChe [14]
1 lb is equal to 16 oz, therefore 16 * 7 is 112oz then add 1/2 lb which is 8oz so the final answer is 120 oz
3 0
3 years ago
Plz help i will mark brainliest
Alexus [3.1K]
2,3,and4 is 72
1 and 5 is 36
5 0
2 years ago
PLEASE HELP!! DUE SOON :( Question: Find the value of x.
Harrizon [31]

Answer:

Ooh man, this was back in geometry I think, I think the answer is 4 if my calculations are correct.

i think the bigger side is twice the size of the smaller side, so 2 times 8 is 16,

16 = 5x - 4

x = 4

5 0
3 years ago
Which size bag of cat food shown in the table has the lowest unit price?
garik1379 [7]
Size 40 is the cheapest, because the formula to find lowest price of unit is dividing the price by the unit. so 5.49/24≈ 0.23, 8.00/40=0.2, 15.99/64≈ 0.25
7 0
3 years ago
Other questions:
  • Find the product of 98 and 863
    7·1 answer
  • 30 miles
    8·2 answers
  • When a value is given in scientific notation, how can you tell if the number is very large or very small? Explain.
    11·2 answers
  • The length of a Rectangle is 4 inches more than the with the perimeter is 4 inches find the length and the width
    14·1 answer
  • What is the product of 10x^4y^2 and 3xy^3
    11·1 answer
  • A gardener rakes 3 lawns in 4.5 hours. if the gardener charges $15 per lawn how much does he earn per hour.
    13·2 answers
  • If a child's knowledge of the alphabet is limited to the letters a, b, c, i, and e, and if the child writes two letters at rando
    5·2 answers
  • Sharon runs a screen-printing business. To print T-shirts each day, it costs her $200 in labor plus $5 per T-shirt for materials
    13·1 answer
  • HELPPP<br> What is the value of d ?<br><br> 84<br> 80<br> 100<br> 50
    13·2 answers
  • What is the surface area of this rectangular prism?<br><br> 5 ft<br> 4 ft<br> 12 ft
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!