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
polet [3.4K]
3 years ago
11

How can you use rate to compare the cost of two of cereal that are different sizes.

Mathematics
1 answer:
Andrei [34K]3 years ago
5 0
Fewer dollars per oz or per pound is cheaper per pound of weight gained
You might be interested in
According to 2013 report from Population Reference Bureau, the mean travel time to work of workers ages 16 and older who did not
gregori [183]

Answer:

a) 48.80% probability that his travel time to work is less than 30 minutes

b) The mean is 30.7 minutes and the standard deviation is of 3.83 minutes.

c) 13.13% probability that in a random sample of 36 NJ workers commuting to work, the mean travel time to work is above 35 minutes

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 are 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.

In this question, we have that:

\mu = 30.7, \sigma = 23

a. If a worker is selected at random, what is the probability that his travel time to work is less than 30 minutes?

This is the pvlaue of Z when X = 30. So

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

Z = \frac{30 - 30.7}{23}

Z = -0.03

Z = -0.03 has a pvalue of 0.4880.

48.80% probability that his travel time to work is less than 30 minutes

b. Specify the mean and the standard deviation of the sampling distribution of the sample means, for samples of size 36.

n = 36

Applying the Central Limit Theorem, the mean is 30.7 minutes and the standard deviation is s = \frac{23}{\sqrt{36}} = 3.83

c. What is the probability that in a random sample of 36 NJ workers commuting to work, the mean travel time to work is above 35 minutes?

This is 1 subtracted by the pvalue of Z when X = 35. So

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

By the Central Limit Theorem

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

Z = \frac{35 - 30.7}{3.83}

Z = 1.12

Z = 1.12 has a pvalue of 0.8687

1 - 0.8687 = 0.1313

13.13% probability that in a random sample of 36 NJ workers commuting to work, the mean travel time to work is above 35 minutes

8 0
3 years ago
Is the histogram uniform, symmetric, or skewed?
aleksandrvk [35]

Answer:

skewed to the left

Step-by-step explanation:

when you look at the graph, you look for where the peaks are. if the peak is not centered, it is skewed. in this case, it leans towards the left. hope this helps :)

4 0
3 years ago
WILL GIVE BRAINLIEST Which expression is equivalent to x + 11?
larisa [96]

Answer:

11+x because the equation is reversabel.

Step-by-step explanation:

6 0
3 years ago
What is the solution to the equation x/-3=4? <br> A)x=-7 B)x=-4/3 C) x=-1 D)x=-12
pav-90 [236]

d) x=-12 because x/-3=4 can be rearranged as x=4x-3 so x=-12

7 0
3 years ago
WORTH 20 POINTS PLEASE HELP
Dmitriy789 [7]
The answer is d its decreasing
8 0
3 years ago
Other questions:
  • HELP ME PLEASEEEEE PLEAZEEEEEEE ASAP :(
    14·1 answer
  • Mr. Jones spends $156 to attend a college football game. Twenty percent of his cost was for a pass for parking. He spend the rem
    14·1 answer
  • . The temperature was 56 degrees this morning but dropped one degree per hour through the rest of the day. Y = - x + 56. (OR, yo
    11·2 answers
  • 25w^2+60w+36 factor completely
    13·1 answer
  • Write a verbal expression for 73
    11·2 answers
  • Toby divided 59.50 by 6.8, as shown. But he forgot to put a decimal point in the answer. Complete the sentence below
    11·2 answers
  • Three students, Brayden, Adrian, and Aubrey, line up one behind the other. How many different ways can they stand in line?
    9·2 answers
  • Match each number with its opposite
    15·1 answer
  • Which classifications apply to the polygon? Check all that apply.
    5·2 answers
  • What is the average velocity of a car that travels 50 km in 2 hrs?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!