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
alukav5142 [94]
2 years ago
15

A sports marketing company is interested in how many hours teenagers in a town spend watching sports. They randomly select 40 te

enagers in this town and ask how many hours per week they spend watching sports. The mean amount is 6.25 hours with a standard deviation of 4.33 hours. Which of the following is the 90% confidence interval for the true mean amount of time teenagers from this town watch sports?
Find the t-table here.

(4.396, 8.104)
(4.865, 7.635)
(5.097, 7.404)
(5.245, 7.256)
Mathematics
1 answer:
Natasha_Volkova [10]2 years ago
7 0

Answer:

C. (5.097, 7.404)

Step-by-step explanation:

EDGE 2020

You might be interested in
Two electricians are assigned to work on a remote control wiring job. One electrician works 8 1/2 hours each day, and the other
klasskru [66]
8.5 • 5 = 42.5
2.5 • 5 = 12.5
42.5 - 12.5 = 30
The first electrician worked 30 hours longer than the second electrician.
6 0
2 years ago
A car is traveling at a rate of 40 miles per hour. what is this speed in feet per minute?
kifflom [539]
I am pretty sure it is 3520 feet per minute.
3 0
3 years ago
Solve: 25 - 5x = 80<br>A. 8/3<br>B. -11<br>C. 4<br>D. 21
natita [175]
-5x=80-25
-5x=55
x=-11
8 0
3 years ago
Read 2 more answers
A line passes through the points (0, 9) and (9, 19). What is its equation in slope-intercept form?
STatiana [176]

Answer:

y = 10/9x + 9

Step-by-step explanation:

To write the equation in its slope-intercept form, y = mx + b, we need to find the slope (m) of the line and its y-intercept (b).

Given the points (0, 9) and (9, 19), we can solve for the slope of the line using the following formula:

m = \frac{y2 - y1}{x2 - x1}

Let (x1, y1) = (0, 9)

and (x2, y2) = (9, 19)

Substitute these values on the formula:

m = \frac{y2 - y1}{x2 - x1} = \frac{19 - 9}{9 - 0} = \frac{10}{9}

Therefore, the slope (<em>m </em>) = 10/9.

Next, the <u>y-intercept</u> is the point on the graph where it crosses the y-axis, and has the coordinates, (0, <em>b </em>). It is also the value of the y when x = 0.

One of the given points is the y-intercept of the line, given by (0, 9). The y-coordinate, 9, is the value of b.

Therefore, the linear equation in slope-intercept form is: y = 10/9x + 9

3 0
2 years ago
Solve the following system of equations by the substitution method.
Dahasolnce [82]

Answer:

Step-by-step explanation:

5x=y+6   --------- equ 1

2x-3y=4  -------- equ 2

5x - 6 = y

y = 5x - 6

substitute in equ 2

2x-3(5x - 6) =4

2x - 3*5x + 3*6 = 4

2x - 15x + 18 = 4

- 13x = 4 - 18

-13x = -14

x = -14/-13

x = 14/13

substitute  in equ 1

5*14/13 = y+6  

70/13 - 6 = y

y =  ( 70 - 78)/13

y = -8/13

6 0
2 years ago
Other questions:
  • Can someone please help me with this!!<br>Will give brainliest!!
    9·1 answer
  • Which of the following options have the same value as 72% of 50?
    10·2 answers
  • What is the rule for X=2 Y=2
    14·1 answer
  • The value of cosec35°- sec55° will be​
    10·1 answer
  • Write the equation of the circle whose diameter has endpoints (-16, -16) and (-4, -8). *
    12·1 answer
  • Pick the geometric term that matches the real-world object: a deck of cards.
    12·2 answers
  • How is domain of the function f(x)=cosx restricted so that its inverse function exists?
    7·1 answer
  • Please help with this.
    12·2 answers
  • HELP ME PLZ I WILL GIVE BRAINLY AND 50 PTS!!
    10·2 answers
  • Use, &lt;, &gt;, = to compare the following decimals.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!