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
Naddik [55]
3 years ago
5

A cereal box says it contains 20% more it came with 18.5 ounces of cereal how much cereal does the box come with now

Mathematics
1 answer:
Sphinxa [80]3 years ago
3 0

Answer:

22.2 ounces

Step-by-step explanation:

18.5 ounces times 1.20

You might be interested in
Suppose that a researcher is designing a survey to estimate the proportion of adults in your state who oppose a proposed law tha
irinina [24]

Answer:

n=\frac{0.5 (1-0.5)}{(\frac{0.02}{1.96})^2}= 2401

So without prior estimation for the population proportion, using a confidence level of 95% if we want a margin of error about 2% we need al least a sample size of 2401.

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The population proportion have the following distribution  

p \sim N(p,\sqrt{\frac{\hat p(1-\hat p)}{n}})  

Solution to the problem

The margin of error for the proportion interval is given by this formula:  

ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}} (a)  

If solve n from equation (a) we got:  

n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2} (b)  

The margin of error desired for this case is ME= \pm 0.02 equivalent to 2% points

For this case we need to assume a confidence level, let's assume 95%. And since we don't have prior estimation for the population proportion of interest the best value to do an approximation is \hat p =0.5

In order to find the critical value we need to take in count that we are finding the margin of error for a proportion, so on this case we need to use the z distribution. Since our interval is at 95% of confidence, our significance level would be given by \alpha=1-0.95=0.05 and \alpha/2 =0.025. And the critical value would be given by:  

z_{\alpha/2}=\pm 1.96  

Now we have all the values needed and if we replace into equation (b) we got:

n=\frac{0.5 (1-0.5)}{(\frac{0.02}{1.96})^2}= 2401

So without prior estimation for the population proportion, using a confidence level of 95% if we want a margin of error about 2% we need al least a sample size of 2401.

5 0
3 years ago
WILL GIVE BRAINLY PLEASE HELPPPPP
erica [24]

Answer:

C

Step-by-step explanation:

4(8-x)=8

32-4x=8

-4x=-24

x=6

5 0
3 years ago
Read 2 more answers
Help picture attached!!
tigry1 [53]
I think it would be D, because you would divide the 1/8 be 5, giving you 1/40
6 0
3 years ago
Read 2 more answers
Identify the slope of the line for the equation y = −9x − 7
Alex Ar [27]

Answer:

the slope is -9x

Step-by-step explanation:

whatever has x next to it is the slope

8 0
3 years ago
Read 2 more answers
Write a rule for a geometric sequence that has -6 as its first term and a common ratio of 2. What is the tenth term of this sequ
slega [8]
The general form of the geometric sequence is a_{n} = a_{1} (r) ^{n-1}, where a sub n is the number term you're looking for (we're looking for the tenth term). a sub 1 is the first term in the sequence (ours is -6), r is the common ratio, and n-1 is the numbered term you're looking for minus 1.  Our formula then looks like this: a_{10} =-6(2) ^{10-1}.  Simplify it to  a_{10} =-6(2)^9.  Take 2 to the 9th power then multiply it by -6 to get -3072.  C is your answer.
3 0
3 years ago
Other questions:
  • Levi bought 14 chicken wings for $22.40 how much would it cost for 12 wings
    6·2 answers
  • A number, twice that number, and one-third of that number are added. The result is 20. What is the number?
    13·1 answer
  • Both Dale and Chan went running for an hour. Dale ran 5 miles and Chan ran 2.5 miles. How did Dale’s distance compare to Chan’s?
    13·2 answers
  • How many pints are equivalent to 3 gallons?
    6·2 answers
  • Suppose that 9 is a factor of a number
    7·1 answer
  • Need some help with this. hope someone can.help
    7·2 answers
  • Mrs piper is driving Anna, jo, and mai home from school. all of them want to ride in the front seat. All of them want to ride in
    10·1 answer
  • What is the area of the regular hexagon ABCEF? Explain your reasoning.
    14·1 answer
  • HELP ME RN PLEASE <br> Which of the following expressions is equivalent to the expression below?
    6·1 answer
  • Use a net to find the surface area of the cone to the nearest square centimeter. Use 3.14 for л. The surface area of the cone is
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!