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
svp [43]
2 years ago
8

Lower Quartile value (Q1) is:41424648545657​

Mathematics
2 answers:
qwelly [4]2 years ago
8 0

Answer:

Q1 =46

Step-by-step explanation:

Q1=(N+1)/4  (N means no of data)

=8+1/4

=9/4

=2.25

=2 nd term + (3 rd term - 2 nd term)

=44 +(46 - 44)

=44 + 2

=46

Anettt [7]2 years ago
3 0
The lower Quartile value should be from 42 to 48 i believe. I hope this help
You might be interested in
Answer for brainliest!
oksano4ka [1.4K]
Yiur ams zoebd 46 btah
5 0
3 years ago
Read 2 more answers
If r = 4 units and x = 13 units, then what is the volume of the cylinder
irina [24]
Im going to go with the volume being 653.45 because v = pie r squared h = pie  times 4 squared times 13 which equals 653.45... hope its correct ! 
6 0
3 years ago
The following data lists the ages of a random selection of actresses when they won an award in the category of Best​ Actress, al
Valentin [98]

Answer:

a) p_v =P(t_{(9)}

The p value is higher than the significance level given 0.01, so then we can conclude that we FAIL to reject the null hypothesis. And we can say that the true difference for Best Actresses is not significantly lower than the mean for Best​ Actors at 1% of significance.

b) The 99% confidence interval would be given by (-21.469;2.069)

c) We got the same conclusion as part a, sicne the confidence interval contains the value 0, we FAIL to reject the null hypothesis that the difference between the two

Step-by-step explanation:

Part a

Let put some notation  

x=actor's age , y = actress's age

x: 58 41 36 36 34 33 48 37 37 43

y: 26 27 34 26 35 29 23 42 30 34

The system of hypothesis for this case are:

Null hypothesis: \mu_y- \mu_x \geq 0

Alternative hypothesis: \mu_y -\mu_x

The first step is calculate the difference d_i=y_i-x_i and we obtain this:

d: -32, -14, -2, -10, 1, -4, -25, 5, -7, -9

The second step is calculate the mean difference  

\bar d= \frac{\sum_{i=1}^n d_i}{n}= -9.7

The third step would be calculate the standard deviation for the differences, and we got:

s_d =\frac{\sum_{i=1}^n (d_i -\bar d)^2}{n-1} =11.451

The 4 step is calculate the statistic given by :

t=\frac{\bar d -0}{\frac{s_d}{\sqrt{n}}}=\frac{-9.7 -0}{\frac{11.451}{\sqrt{10}}}=-2.679

The next step is calculate the degrees of freedom given by:

df=n-1=10-1=9

Now we can calculate the p value, since we have a left tailed test the p value is given by:

p_v =P(t_{(9)}

The p value is higher than the significance level given 0.01, so then we can conclude that we FAIL to reject the null hypothesis. And we can say that the true difference for Best Actresses is not significantly lower than the mean for Best​ Actors at 1% of significance.

Part b

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  

The margin of error is the range of values below and above the sample statistic in a confidence interval.  

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  

The confidence interval for the mean is given by the following formula:  

\bar d \pm t_{\alpha/2}\frac{s}{\sqrt{n}} (1)  

Since the Confidence is 0.99 or 99%, the value of \alpha=0.01 and \alpha/2 =0.005, and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-T.INV(0.005,9)".And we see that t_{\alpha/2}=3.25  

Now we have everything in order to replace into formula (1):  

-9.7-3.25\frac{11.451}{\sqrt{10}}=-21.469  

-9.7+3.25\frac{11.451}{\sqrt{10}}=2.069  

So on this case the 99% confidence interval would be given by (-21.469;2.069)

Part c

We got the same conclusion as part a, sicne the confidence interval contains the value 0, we FAIL to reject the null hypothesis that the difference between the two means is 0.

8 0
3 years ago
Factorise<br>x2 + 2x - 3​
Nitella [24]

Answer:

( x − 1 ) ( x +3 )

8 0
3 years ago
Somebody Please Help!!!
sasho [114]

Step-by-step explanation:

11. shape 1 => A = ½×17×10=85m²

shape 2=> A = 17×9 =153 m²

total area = 238 m²

12. shape 1 => A = 7×3= 21 m²

shape 2=> A = 3×2 = 6 m²

total area = 27 m²

4 0
2 years ago
Other questions:
  • What’s #27 in vertex form
    13·2 answers
  • What is the order of rotational symmetry for a mombus?<br> 0<br> 1
    7·1 answer
  • A cone has a height of 14 centimeters and a diameter of 8.4 centimeters. What is the volume of the cone in terms of pie?
    10·1 answer
  • A deli has a special one-day event to celebrate its anniversary. On the day of the event, every eighth customer receives a free
    14·2 answers
  • One conveyor belt can move 1000 boxes in 9 minutes. Another can move 1000 boxes in 11 minutes. If another conveyor belt is added
    12·1 answer
  • Mitch needs to purchase soft drinks for a staff party. He is trying to figure out if it is cheaper to buy the 12-pack of soda or
    7·2 answers
  • Can some one show me the steps to get the answer it’s a test and I need help
    15·1 answer
  • Write an equation that models this situation. A copier that makes 34 copies per minute runs for 12 minutes. How many copies (x)
    9·2 answers
  • ASAP What is 1/3 (x - 10) = -4 I need the asnwer and all the steps on how to do it! Thank you.
    9·2 answers
  • 1. What is common in the four
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!