A set of data has an interquartile range of 20 and a lower quartile range of 6. if the data is symmetrica, what is the value of the median?
Please help and explain the outcome..Thanks so much
Answer:
C.
Step-by-step explanation:
Answer:
18(2x - 3)
Step-by-step explanation:
Hey there! :)
In order to factor 36x - 54, you must find the common factors of it.
So, we must ask ourselves : what number goes into BOTH 36x & -54?
Our answer is going to be 18.
So, let's ask ourselves a couple more questions :
How many times does 18 go into 36x?
&
How many times does 18 go into -54?
36x ÷ 18 = 2x
-54 ÷ 18 = -3
Therefore, 18 goes into 36x 2 times while 18 goes into -54 3 times.
So now that we know that, simply take 18 out like so :
18(2x - 3)
This is our answer because when multiplied by 2x, 18 turns into 36x. In addition, when multiplied by 18, -3 turns into -54.
Hope I helped! :)
Answer:
Step-by-step explanation:
Hello!
So you have a new type of shoe that lasts presumably longer than the ones that are on the market. So your study variable is:
X: "Lifetime of one shoe pair of the new model"
Applying CLT:
X[bar]≈N(μ;σ²/n)
Known values:
n= 30 shoe pairs
x[bar]: 17 months
S= 5.5 months
Since you have to prove whether the new shoes last more or less than the old ones your statistical hypothesis are:
H₀:μ=15
H₁:μ≠15
The significance level for the test is given: α: 0.05
Your critical region will be two-tailed:
So you'll reject the null Hypothesis if your calculated value is ≤-1.96 or if it is ≥1.96
Now you calculate your observed Z-value
Z=<u>x[bar]-μ</u> ⇒ Z=<u> 17-15 </u> = 1.99
σ/√n 5.5/√30
Since this value is greater than the right critical value, i.e. Zobs(1.99)>1.96 you reject the null Hypothesis. So the average durability of the new shoe model is different than 15 months.
I hope you have a SUPER day!
Answer:Each tennis ball cost 0.67 cents.
Step-by-step explanation:
$10.05 divided by 15 equals 0.67 cents.
0.67 x 15 = $10.05