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
jasenka [17]
3 years ago
7

Based on the random sample of n=800 observations, we have obtained a sample proportion p(bar =0.44. the goal is to test: h(0: p?

0.48 h9a: p<0.48 what is the standard error (?(p? rounded to four decimal places
Mathematics
1 answer:
uysha [10]3 years ago
5 0
<span>The standard error of a distribution of sample proprtions is defined as the standard deviation of the distribution and is symbolized by
SE(\hat{p})
and is calculated by the formula
SE(\hat{p})= \sqrt{ \frac{p(1-p)}{n} }</span>.

Given a <span>random sample of n = 800 observations and a sample proportion p = 0.44.

To test:
H_0:\hat{p}\ \textgreater \ 0.48 \\ H_a:\hat{p}\ \textless \ 0.48

The standard error rounded to four decimal places is given by:
SE(\hat{p})= \sqrt{ \frac{0.44(1-0.44)}{800} } \\  \\ = \sqrt{ \frac{0.44(0.56)}{800} } = \sqrt{ \frac{0.2464}{800} }  \\  \\ = \sqrt{0.000308} =\bold{0.0175}</span>
You might be interested in
You are in a bike race. When you get to the first checkpoint, you are 2/5 of the distance to the second checkpoint. When you get
SpyIntel [72]
If the entire race is 40 miles, then the second checkpoint is 3/4 of the whole way, which is 30 miles because 40 ÷ 4 = 10 and 10 x 3 = 30. This means that there are 30 miles between the start and the second checkpoint. 2/5 of 30 is 12 because 30 ÷ 5 = 6 and 6 x 2 = 12. Therefore, the answer is 12 miles
8 0
3 years ago
Rodger has 47 cars . Can he group the cars in more than two ways?
deff fn [24]
First of all, Rodger must be making some serious cash to have 47 cars. Going back to the question, he can not group the cars in more than 2 ways. He can only group it in 1 way, 47 groups of 1. Pls brainliest
4 0
3 years ago
4, 3, 4, 5, 6, 6, 8, 4 what is the mean absolute deviation for the data. Show your work.
Lina20 [59]
I can not use my calculator because my PC is going too slow. But what you do is add up 4+3+4+5+6+6+8+4 and divide it all by 8 (8 being the total numbers in all. That is how you solve all means.)
6 0
4 years ago
Read 2 more answers
latrell will rotate △abc 180° about one of the labeled points. latrell says, “the image will only touch the pre-image at exactly
nekit [7.7K]
Remember, the sides are labelled with lower case letters, and angles are labelled with CAPITAL letters.  The angles are labelled with the CAPITAL letter that is opposite from the side with that letter. 
so: 
Angle A is opposite side a
Angle B is opposite side b
Angle C is opposite side c
6 0
4 years ago
Need help with thissss!!
mario62 [17]

Answer:

f(5) = 38

Step-by-step explanation:

f(a) = 7(a + 1) - 4

f(5) = 7(5 + 1) - 4

f(5) = 7(6) - 4

f(5) = 42 - 4

f(5) = 38

4 0
3 years ago
Other questions:
  • Necesito saber ¿Que es rotacion?
    9·1 answer
  • 1. Add 8, 3.5, and 15.
    10·2 answers
  • Mrs. porter's cat weighs 6kg. her dog weighs 22kg more than her cat. what is the total weight of her cat and dog?
    6·1 answer
  • A boy weighs 31.5 kilograms. how much does he weigh in pounds? use the following conversion: 1 kilogram is 2.2 pounds
    8·2 answers
  • Please help me with this problem!
    12·1 answer
  • What is the midpoint of the vertical line segment graphed below?
    7·1 answer
  • The rate of change in sales S is inversely proportional to time t(t &gt; 1) measured in weeks. Find S as a function of t if sate
    5·1 answer
  • Martin charges $10 for every 5 bags of leaves he rakes. Last weekend, he raked 26 bags of leaves. How
    10·1 answer
  • What is the product of (2p + 7)(3p2 + 4p – 3)?
    14·1 answer
  • You're buying a house for the stated price of $133,000 and you've been approved for a
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!