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
BartSMP [9]
3 years ago
11

A set of data includes 101 data points ranging from 0 – 200. If the data is split into classes with a range of 20 (1 – 20, 21 –

40, etc), and there are no values that fall in the class 101 – 120, what can you say about the data?
A.The mean of the data will not be between 101 and 120.
B. All the data lies below 100.
C. The relative frequency of the class 101 – 120 is 0.
D. The median could be in the range 101 – 120.
Mathematics
1 answer:
nikdorinn [45]3 years ago
5 0
D, because there might be values higher than 120, because the data points range from 0 - 200.
You might be interested in
A college student is interested in investigating the TV-watching habits of her classmates and surveys 20 people on the number of
Alla [95]

Answer:

80% confidence interval of the true average number of hours of TV watched per week is [8.28 hours, 11.02 hours].

Step-by-step explanation:

We are given that a college student is interested in investigating the TV-watching habits of her classmates and surveys 20 people on the number of hours they watch per week. The results are provided below;

<u>Hours of TV per week (X)</u>: 6, 14, 13, 6, 16, 10, 19, 4, 5, 5, 18, 8, 7, 14, 8, 8, 9, 12, 6, 5.

Firstly, the Pivotal quantity for 80% confidence interval for the true average is given by;

                                P.Q. =  \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } }  ~ t_n_-_1

where, \bar X = sample mean number of hours of TV watched per week = \frac{\sum X}{n} = 9.65

            s = sample standard deviation = \sqrt{\frac{\sum (X -\bar X)^{2} }{n-1} }  = 4.61

            n = sample of people = 20

           \mu = true average number of hours of TV watched per week

<em>Here for constructing 80% confidence interval we have used One-sample t-test statistics as we don't know about population standard deviation.</em>

<u>So, 80% confidence interval for the true average, </u>\mu<u> is ;</u>

P(-1.33 < t_1_9 < 1.33) = 0.80  {As the critical value of t at 19 degrees of

                                               freedom are -1.33 & 1.33 with P = 10%}  

P(-1.33 < \frac{\bar X-\mu}{\frac{s}{\sqrt{n} } } < 1.33) = 0.80

P( -1.33 \times {\frac{s}{\sqrt{n} } } < {\bar X-\mu} < 1.33 \times {\frac{s}{\sqrt{n} } } ) = 0.80

P( \bar X-1.33 \times {\frac{s}{\sqrt{n} } } < \mu < \bar X+1.33 \times {\frac{s}{\sqrt{n} } } ) = 0.80

<u>80% confidence interval for</u> \mu = [ \bar X-1.33 \times {\frac{s}{\sqrt{n} } } , \bar X+1.33 \times {\frac{s}{\sqrt{n} } } ]

                                         = [ 9.65-1.33 \times {\frac{4.61}{\sqrt{20} } } , 9.65+1.33 \times {\frac{4.61}{\sqrt{20} } } ]

                                         = [8.28 hours, 11.02 hours]

Therefore, 80% confidence interval of the true average number of hours of TV watched per week is [8.28 hours, 11.02 hours].

7 0
3 years ago
Sierra used 4 pears and 12 apples to make a fruit salad. What is the
jolli1 [7]

Answer: 1:3

Step-by-step explanation: for every pear she uses 3 apples

6 0
3 years ago
Ardit left a 18% tip on a $60 restaurant bill. How much money did he leave for the tip?
Fed [463]

Answer:

$10.80

Step-by-step explanation:

$60.00 x 0.18 = $10.80

5 0
3 years ago
Johnny is reading a novel for the read-a- Thon. The ratio of the number of pages she read to the pages that remain to be read is
mart [117]
There are several ways to answer this question and I will use this approach. Since Johnny reads at a ratio of 7:3 it can be stated that for every 10 pages in a book containing 500 pages Johnny will read 7 of those pages. There are 50 groups of 10 in a 500-page book (50 x 10). Take the ration 7:3 times 50 and use the distributive property:  7:3(50) = (7 x 50):(3 x 50) = 350:150. Based on this Johnny has read 350 pages and has 150 pages remaining.
7 0
3 years ago
A bag of peanuts weighs 1/4 pound. How much do 1 1/2 weigh?
Nataly [62]

Answer:

I think it would weigh 1 1/8, love

Step-by-step explanation:

I'm not good at explaining but I'll try.

One bag weighs 1/4 pound meaning that half a bag would weigh 1/8 pound

Hope I helped sweetheart

7 0
3 years ago
Other questions:
  • The city park in which Allen plays is a square and measures excactly one million square feet. Which side dimensions produce the
    6·1 answer
  • 2. An event with a probability of 1 is<br> called<br> certain<br> likely.<br> impossible
    7·1 answer
  • What is the average rate of change of the function g(x) = 3(2^x) - 6 over the interval [0,3]? Show all work.
    11·1 answer
  • Number 7. Please asap.
    13·2 answers
  • PLEASE HELP ME!!!!!!!!
    12·1 answer
  • What is the Median in the following Number sequence:<br> 19, 13, 16, 15, 8, 14,6
    15·1 answer
  • Which of the following is a rotation? Select all.
    9·2 answers
  • NEED HELP ASAP TAKING TEST A refrigeration unit at a restaurant is supposed to be kept at 40°F. An inspector would like to test
    6·1 answer
  • A shopper needs 48 hot dogs. The store sells identical hot dogs in 2 differently sized packages. They sell a six-pack of hot dog
    11·2 answers
  • HELP ME PLEASEEEE<br><br> thank you &lt;3
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!