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
Inessa [10]
3 years ago
8

The claim is that the proportion of adults who smoked a cigarette in the past week is less than 0.30​, and the sample statistics

include nequals1491 subjects with 462 saying that they smoked a cigarette in the past week. Find the value of the test statistic.
Mathematics
1 answer:
IrinaK [193]3 years ago
6 0

Answer: 0.84

Step-by-step explanation:

let p be the population proportion of adults who smoked a cigarette in the past week.

As per given , we have

H_a: p

Sample size : n= 1491

The sample proportion of adults smoked a cigarette= \hat{p}=\dfrac{x}{n}=\dfrac{462}{1491}=0.30985915493\approx0.31

The test statistic for proportion is given by :-

z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

Substitute all the values , we get

z=\dfrac{0.31-0.30}{\sqrt{\dfrac{0.30(1-0.30)}{1491}}}\\\\=\dfrac{0.01}{\sqrt{0.000141}}\\\\=\dfrac{0.01}{0.011874342087}=0.84261497731\approx0.84

Hence, the value of the test statistic = 0.84

You might be interested in
Henry and Natalie are writing a comic book. Henry writes 12 pages for the comic book, and Natalie writes 16 pages. They want to
Triss [41]

answer: 1736

Step-by-step explanation: big brain

8 0
2 years ago
Read 2 more answers
Can you please help me
Airida [17]

Answer:

Do u need slope?

Step-by-step explanation:

5 0
2 years ago
What is the median of these numbers 12 13 15 16 19 32
uysha [10]

Answer:

15 1/2 or 15.5

Step-by-step explanation:

the median is just the numer in the middle (numerical order) so, because you end up with both 15 and 16, the rational number between them is 15.5

4 0
2 years ago
The amounts of 8 charitable contributions are $100, $80, $250, $100, $500, $1000, $100, and $150.
cluponka [151]
Due to the fact that mode means most present number your answer would be mode or 100 dollars
5 0
3 years ago
Convert 75 seconds to hours<br>​
ZanzabumX [31]
It is 0.02083333 hours.
8 0
3 years ago
Other questions:
  • 1. The earth makes a full rotation in 24 hours. Jupiter takes approximately 58 days, 15 h, and 30 min to complete a full rotatio
    7·1 answer
  • What is the slope of the line in the graph?
    12·1 answer
  • you are trying to increase your monthly savings to buy a used car your boss allows you to work one hour of overtime at time and
    14·1 answer
  • Can somebody help me ??
    12·1 answer
  • Statement Reason The coordinates of point D are (4, 5) and coordinates of point E are (5, 3) By the midpoint formula Length of s
    13·2 answers
  • Shortest distance to the origin y=1/2x^2 -4
    5·1 answer
  • Solve for p. 3+ [1 +p] = 12 A) p =8 or p = -8, B) p = 14 or p = -16, C) p = 8 or p = -10, D) p = 10 or p = - 10.​
    9·1 answer
  • What is the value of b if (3 + i) and (3 - i) are complex roots of 2x² + bx + 20 = 0?
    7·1 answer
  • Plot all of the existing five features of the following rational function (some may not
    7·1 answer
  • R is a three digit number determine the digits of r from the clues the first digit is the answer when the third digit is divided
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!