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
irina1246 [14]
3 years ago
5

If you spend 7 hours a day sleeping what fraction of the day are you asleep?

Mathematics
2 answers:
USPshnik [31]3 years ago
7 0

Answer:

7/24 sleeping

Step-by-step explanation:

there are 24hrs in a day

7 of them are sleeping.

Viktor [21]3 years ago
3 0

Answer:

7/24

Step-by-step explanation:


You might be interested in
Assume that you have a sample of n 1 equals 6​, with the sample mean Upper X overbar 1 equals 50​, and a sample standard deviati
tigry1 [53]

Answer:

t=\frac{(50 -38)-(0)}{7.46\sqrt{\frac{1}{6}+\frac{1}{5}}}=2.656

df=6+5-2=9

p_v =P(t_{9}>2.656) =0.0131

Since the p value is higher than the significance level given of 0.01 we don't have enough evidence to conclude that the true mean for group 1 is significantly higher thn the true mean for the group 2.

Step-by-step explanation:

Data given

n_1 =6 represent the sample size for group 1

n_2 =5 represent the sample size for group 2

\bar X_1 =50 represent the sample mean for the group 1

\bar X_2 =38 represent the sample mean for the group 2

s_1=7 represent the sample standard deviation for group 1

s_2=8 represent the sample standard deviation for group 2

System of hypothesis

The system of hypothesis on this case are:

Null hypothesis: \mu_1 \leq \mu_2

Alternative hypothesis: \mu_1 > \mu_2

We are assuming that the population variances for each group are the same

\sigma^2_1 =\sigma^2_2 =\sigma^2

The statistic for this case is given by:

t=\frac{(\bar X_1 -\bar X_2)-(\mu_{1}-\mu_2)}{S_p\sqrt{\frac{1}{n_1}+\frac{1}{n_2}}}

The pooled variance is:

S^2_p =\frac{(n_1-1)S^2_1 +(n_2 -1)S^2_2}{n_1 +n_2 -2}

We can find the pooled variance:

S^2_p =\frac{(6-1)(7)^2 +(5 -1)(8)^2}{6 +5 -2}=55.67

And the pooled deviation is:

S_p=7.46

The statistic is given by:

t=\frac{(50 -38)-(0)}{7.46\sqrt{\frac{1}{6}+\frac{1}{5}}}=2.656

The degrees of freedom are given by:

df=6+5-2=9

The p value is given by:

p_v =P(t_{9}>2.656) =0.0131

Since the p value is higher than the significance level given of 0.01 we don't have enough evidence to conclude that the true mean for group 1 is significantly higher thn the true mean for the group 2.

4 0
3 years ago
A spinner has 8 sections. 2 are grey 6 are blue. The spinner is spun twice what is the probability that the first lands on grey
sweet [91]

Answe

Step-by-step explanation:

5 0
3 years ago
QRST is a parallelogram. Find x and y.
Wewaii [24]

In parallelograms, opposite sides are congruent, meaning that they are the same lengths. So, we have:

y - 4x = 9

-x + 4 = y

Add x to both sides of the second equation:

y + x = 4

y - 4x = 9

This is a system of linear equations. Solve by eliminating the y and subtracting the two equations:

5x = -5

x = -1

Use x to solve for y:

y + (-1) = 4

y = 5

So, x = -1 and y = 5.

5 0
3 years ago
Expand (x-2)^7 using binomial theorem
Nastasia [14]

Answer:

x^7-14x^6+84x^5-280x^4+560x^3-672x^2+448x^2-128

Step-by-step explanation:

ends are x^7 and 120^7, and use the therom in the middle

5 0
3 years ago
The length of a ribbon is 7/ 8 meter. Sun Yi needs pieces measuring 1/ 7 meter for an art project. What is the greatest number o
Solnce55 [7]

Answer:

7, 1/8th will be left after sun yi is done

Step-by-step explanation:

7 0
3 years ago
Other questions:
  • Can I get some help ? :/
    7·1 answer
  • Let n equal 3a+2b-7. What happens to the value of n if the value of a increases by 2 and the value of b decreases by 1?
    13·1 answer
  • Help!!! I don't know this ​
    13·2 answers
  • What fraction do the blue segments make up?
    15·1 answer
  • The cost for fudge at Candy Lane is represented by the table. The graph shows the cost of a similar fudge that Best Fudge Shop s
    14·2 answers
  • Please help me convert this to an equation with an explanation. Linda is shopping for a new cell phone and rate plan. She wants
    8·1 answer
  • Please answer this correctly
    12·1 answer
  • Can you please help me with this question. ​
    8·1 answer
  • I need help on this pleasee and please explain​
    8·1 answer
  • A ball pit has 1000 red balls, 500 green balls, and 100 yellow balls. If a ball randomly gets picked from the pit, what is the p
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!