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
Nadya [2.5K]
3 years ago
11

How manys days makes a leap year?​

Mathematics
1 answer:
dem82 [27]3 years ago
3 0

Answer: In an ordinary year, if you were to count all the days in a calendar from January to December, you'd count 365 days. But approximately every four years, February has 29 days instead of 28. So, there are 366 days in the year. This is called a leap year.

Step-by-step explanation:

You might be interested in
What is 3456 divide by 5
babymother [125]
3456 divided by 5 is 691.2
5 0
3 years ago
Read 2 more answers
Find the mean and median of these numbers 14, 3, 15, 4, 3, 11
CaHeK987 [17]
The median or middle number is 9.5
5 0
3 years ago
URGENT!!!!! 20 POINTS! Kara is graphing the equation |x| + |y| = a , where a​ is a real number.
beks73 [17]

Answer:

Step-by-step explanation:

a=0 if both x and y are each =0

for all other real values a>0

7 0
3 years ago
Read 2 more answers
the total weight of the medals won by the top medal-winning nations in the 2012 London Olympic Games.
V125BC [204]
22222222222222222222222222222222222222222222222222222222223333333333333333333333333333,221
7 0
3 years ago
In a clinical trial of 268 subjects treated with a​ drug, 11​% of the subjects reported dizziness. The margin of error is plus o
Mariulka [41]

Answer:

\hat p =0.11 represent the proportion estimated of subjects reported with dizziness

n = 268 represent the random sample selected

\hat q = 1-\hat p = 1-0.11= 0.89 represent the proportion of subjects No reported with dizziness

E= 0.04 = 4% represent the margin of error for the confidence interval

\alpha= 1-0.90 =0.1 and this value represent the significance level of the test or the probability of error type I

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{p(1-p)}{n}})

Solution to the problem

The confidence interval for the mean is given by the following formula:  

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

The margin of error is given by:

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

Lower= 0.11-0.04 = 0.07

Upper= 0.11+0.04 = 0.15

And for this case we have the following info:

\hat p =0.11 represent the proportion estimated of subjects reported with dizziness

n = 268 represent the random sample selected

\hat q = 1-\hat p = 1-0.11= 0.89 represent the proportion of subjects No reported with dizziness

E= 0.04 = 4% represent the margin of error for the confidence interval

\alpha= 1-0.90 =0.1 and this value represent the significance level of the test or the probability of error type I

4 0
3 years ago
Other questions:
  • How would you graph this correctly onto a graph?
    12·1 answer
  • What is 7.56 in fraction form
    5·2 answers
  • Find the Value of X. <br> 3<br> 8<br> 4<br> 6
    5·1 answer
  • Math flavored homework is hard so I need help
    13·1 answer
  • Find the radius of the sphere with a volume of 32/81π cubic yards. Write your answer as a fraction in simplest form.
    14·2 answers
  • I need help with this
    13·1 answer
  • The perimeter a rectangle is 46 in if the width of the rectangle is 9 inches what is the length ​
    5·1 answer
  • Please help Asap Let f(x) = x^2 and g(x) = 2x.
    5·1 answer
  • You randomly grab a meat and cheese from the fridge. In the fridge there was ham, turkey and beef as well as American or Swiss c
    5·1 answer
  • LCM. Problem about how lcm works. picture in comments.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!