answer.
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
vovikov84 [41]
2 years ago
7

A researcher wishes to estimate the proportion of all adults who own a cell phone. he takes a random sample of 1,572 adults; 1,2

98 of them own a cell phone, hence 1298∕1572 ≈ .83 or about 83% own a cell phone. what is the population of interest? what is the parameter of interest? what is the statistic involved? based on this sample, do we know the proportion of all adults who own a cell phone? explain fully.
Mathematics
1 answer:
zhuklara [117]2 years ago
8 0

solution:

a) The population of interest is all the adults

b) The parameter of interest is p, the proportion of adults who own a cell phone

c) The statistic is the proportion, p^, of the sample of 1572 adults who own a cell phone. The value of the sample proportion is 0.83.

d) We dont the the exact proportion with 100 % but we know that the proportion would lie in a certain range with certain degree of confidence


You might be interested in
Takuya's parents gave him $100dollar as a birthday gift. Since he loves board games, he spent $20dollar out of his present on bo
LUCKY_DIMON [66]

Answer:

To write a recursive formula you need to: First, determine if the sequence is geometric(For example, If your multiply, or divide, the same amount for one term or more). Next, Find the common ratio(In other words the number that you multiply or divide).

Step-by-step explanation:

3 0
2 years ago
Read 2 more answers
A rectangular field has a length of 105 feet and a width of 60 feet. On a map of the field, the width was drawn as 4 inches. Wha
My name is Ann [436]
<span>7 inches represents 105 ft on the map</span>
8 0
2 years ago
Which of the following is the radical expression of a to the four ninths power?
iogann1982 [59]

Step-by-step explanation:

\sqrt[n]{a^m}=a^\frac{m}{n}\\\\\large\huge\boxed{a^\frac{4}{9}=\sqrt[9]{a^4}}

3 0
2 years ago
Read 2 more answers
The half-life of cesium-137 is 30 years. Suppose we have a 170 mg sample.(a) Find the mass that remains after t years.(b) How mu
saul85 [17]

Answer:

212.9 years

Step-by-step explanation:

Given that the half-life of cesium-137 is 30 years. Suppose we have a 170 mg sample

P0 = 175

P(30) = 87.5

So we can write equation as

P(t) = 170(\frac{1}{2} )^{\frac{t}{30} }

b) After 60 years t = 30

In 30 years it becomes half and hence in 60 years it would become 1/4

i.e. P(60) = 137(1/2^4) = 34.25 mg

c) If P(t) =1, let us find t

137(1/2)^{\frac{t}{30} } =1\\\\n = 7.098 years\\n = 7.1*30 = 212.9 years

212.9

5 0
2 years ago
Eva has four sets of straws.
hodyreva [135]
D

You need to use trigonometry, and square all of the numbers, you then add the lowest two and they should sum to the other number.

The set that this works for is the correct set.

Hope this helps x
8 0
2 years ago
Read 2 more answers
Other questions:
  • Ella has 50 stacks of ten pennies in each stack described how to find how many pennies ella has in all
    10·2 answers
  • Simplify: –3(y + 2)2 – 5 + 6y What is the simplified product in standard form? y2 + y +
    5·3 answers
  • Erome is cooking dinner. He needs 8 ounces of broccoli for each person. Part A: Jerome is not sure how many people will come to
    13·1 answer
  • Write the expression 6^7/12 in radical form.
    8·2 answers
  • Which graph is the sequence defined by the function f(x) = 3(2)x-1?
    6·2 answers
  • Thirty-four college students were asked how much money they spent on textbooks for the current semester. Their responses are sho
    9·1 answer
  • Mobile people moving company increased its number of employees from 22 to 27 what is the percent increase round to the nearest t
    9·1 answer
  • A caplet contains 325 mg of medication. How many caplets contain 975 mg of medication?
    8·1 answer
  • A bug is moving back and forth on a straight path. The velocity of the bug is given by vt=t2-3t. Find the average acceleration o
    7·1 answer
  • What would be the denominator after rationalizing 7/(5√3 - 5√2)?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!