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
REY [17]
3 years ago
8

Social scientists discovered that 1,013 General Social Survey (GSS) respondents in 2010 watched television for an average of 3.0

1 hours per day, with a standard deviation of 2.65 hours per day. Answer the following questions, assuming the distribution of the number of television hours is normal.
Required:
a. What is the Z score for a person who watches more than 8 hr/day?
b. What proportion of people watch television less than 5 hr/day? How many does this correspond to in the sample?
c. What number of television hours per day corresponds to a Z score of +1?
d. What is the percentage of people who watch between 1 and 6 hr television per day?
Mathematics
1 answer:
melamori03 [73]3 years ago
4 0

Answer:

Following are the responses to the given question:

Step-by-step explanation:

Sample \ size = n = 1013\\\\\mu = 3.01\\\\\sigma = 2.65

For point a:

Using formula:

Z = \frac{(X - \mu)}{\sigma}\\\\X = 8\\\\Z = \frac{(8- 3.01)}{2.65} = 1.88\\\\

For point b:

P(X

For point c:

X=? \\\\Z = 1\\\\\text{Formula for X score:}\\\\X = \mu + Z \times \alpha\\\\X = 3.01 + 1\times 2.65 = 3.01 + 2.65 = 5.66

For point d:

P(1 \leq X \leq 6)=? \\\\P(1 \leq X \leq 6) = P(X \leq 6) - P(X\leq 1) = P(X< 6) - P(X

Z = \frac{(1 -3.01)}{2.65} = -0.758490566\\\\P(Z< -0.758490566) = 0.224078679\\\\P(X

You might be interested in
At the beginning of Jack's diet, he was 257 pounds. If he lost 3 pounds per week, find his weight after
Cloud [144]

Answer:

A loss of weight means we subtract from Jack's current weight. 

Step-by-step explanation:

A loss of weight means we subtract from Jack's current weight. New Weight = Current Weight - Weight Loss per week * number of weeksNew Weight =257 - 3*12New Weight =257 - 36New Weight = 221

7 0
2 years ago
Read 2 more answers
HEY GUYS I NEED HELP ASAP PLZZ! 20 points to the person who can give me the right answer first!!
Ivanshal [37]

Answer:

28 inches of the board

3 0
3 years ago
Estimate the product of 37 x 62 = ________. Select the equation that correctly represents how to round each factor. (2 points)
irina1246 [14]
It’s the first one 40 times 60
7 0
3 years ago
Solve for x. x/7 - y = a<br><br> Please help as soon as possible. Thanks! =D
ololo11 [35]

Hello!

Answer:

x=7(a+y)

Step-by-step explanation:

Hope this helps!

5 0
3 years ago
Model the following situation with an equation or inequality statement.
olganol [36]

Answer:

2x=1

Step-by-step explanation:

Use x for "a number"

x times 2 = 1

2x=1

which solves for 0.5 or 1/2

3 0
3 years ago
Other questions:
  • Which set of ordered pairs represents a function?
    9·1 answer
  • Suppose an electronics manufacturer takes a sample of 5000 devices produced by an assembly line. Each device is inspected or tes
    12·1 answer
  • Determine the graph transformation....
    8·2 answers
  • Use the distributive property to write an expression that is equivalent to each given property.
    12·1 answer
  • How can you tell whether a positive or negative association exists
    5·1 answer
  • Write an expression that represents n plus 7 multiplied by 3.
    10·2 answers
  • 10 times as many as 2 hundred is 20 hundreds or 2 thousand
    13·1 answer
  • Can someone help me with #8
    14·1 answer
  • There are 20 people in a room, If they all shake each other's hands once and only once, HOW MANY handshakes are there altogether
    12·2 answers
  • Write an<br> explicit formula for an, the nth term of the sequence 112, 28, 7, ....
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!