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
adell [148]
3 years ago
6

The number of hours per week that the television is turned on is determined for each family in a sample. The mean of the data is

38 hours and the median is 34.2 hours. Twenty-four of the families in the sample turned on the television for 23 hours or less for the week. The 14th percentile of the data is 23 hours. Step 2 of 5 : Approximately how many families are in the sample? Round your answer to the nearest integer.
Mathematics
1 answer:
Viktor [21]3 years ago
5 0

Answer:

There are approximately 171 families in the sample.

Step-by-step explanation:

Percentile meaning:

When a value V is said to be in the xth percentile of a set, x% of the values in the set are lower than V and (100-x)% of the values in the set are higher than V.

Twenty-four of the families in the sample turned on the television for 23 hours or less for the week. The 14th percentile of the data is 23 hours.

This means that 24 is 14% of the total number of families.

Approximately how many families are in the sample?

Using a rule of three.

24 - 0.14

x - 1

0.14x = 24

x = 24/0.14

x = 171.4

Rounding to the nearest integer

There are approximately 171 families in the sample.

You might be interested in
Find the area of a rectangle 4 3/4 feet long and 2 feet long
omeli [17]

Answer:

9.5 ft^2

Step-by-step explanation:

It’s just 4.75 * 2

7 0
3 years ago
It took 5 hours to mow 4 lawns. At that rate, how long would it take to mow 7 lawns?
Elanso [62]
1.25 hours for each lawn. 1.25 x 7 = 8.75.
8 0
3 years ago
There is 1/4 ounce of yeast in every 2 1/4 teaspoons of yeast. A recipe for bread calls for 2 teaspoons of yeast. How many ounce
tatyana61 [14]
Here is the set up:

(1/4)/2 = (9/4)/y

Solve for y.
3 0
3 years ago
Evaluate please like pretty please
yaroslaw [1]
It would be zero because you can’t raise 0 to any positive power.
8 0
2 years ago
Two mechanics worked on a car. The first mechanic worked for 5
ArbitrLikvidat [17]

<u>Answer:</u>

$50 and $115

<u>Step-by-step explanation:</u>

We know that,

the sum of the two rates = $165 per hour

Let x and (165 - x) represent the $/hour of the 15hr and 5hr mechanics respectively.

Then combining their charges together to get:

(x*15)hour+(165-x)*5 hour=1325

Solving for x to get:

15x-5x+825=1325

10x=500

x=50

So the rate charged per hour by one mechanic is $50 and for the other mechanic = (165-50)= $115.

8 0
3 years ago
Other questions:
  • A car was purchased for $25,000. Research shows that the car has an average yearly depreciation rate of 18.5%. Create a function
    7·1 answer
  • Find volume of cylinder. circumference is 9 and height is 15
    12·1 answer
  • 6.
    13·1 answer
  • BC=40 CD=30 what is the value of BC-AC
    14·1 answer
  • If a pair of two idenrcal dice are rolled n successive rmes, how many sequences of outcomes contain all six doubles (i.e., two 1
    10·1 answer
  • Bill paid $36 tax on a laptop that cost $450. What percent tax did Bill pay?
    10·1 answer
  • Noelle has containers that each hold one gallon of liquid. She used these containers to dispose of waste from the chemistry labo
    10·1 answer
  • The following table shows claim amounts and their probabilities for an insurance company that offers homeowners’ insurance polic
    14·1 answer
  • Hey again.. Please answer!!
    15·2 answers
  • 2.) Solve:<br><br> -24 - 2m = -4m - 8(m + 8)
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!