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
lawyer [7]
3 years ago
11

What is the mean for 87,93,86,90,84

Mathematics
2 answers:
Lisa [10]3 years ago
7 0
\frac{87+93+86+90+84}{5} =\boxed{\bf{88}}

The mean is 88.
lys-0071 [83]3 years ago
4 0
Mean, or average, is solved by adding all the numbers and dividing by the number of numbers. The answer is 88. 
You might be interested in
Which table shows negative correlation? A 2-column table with 5 rows. The first column is labeled x with entries 1, 2, 3, 4, 5.
zhenek [66]

Answer: B

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
if N is a positive integer, and twice the square of n is the same as four times and, what is the value of n?​
OLga [1]
First translate into an equation. Then solve

N=non-negative integers.

2(n^2) = 4n. Divide both sides of = by 2
n^2 = 2n subtract 2n from both sides
n^2 - 2n = 0. Factor
n(n - 2) =0. Solve factor = 0.
N = 0. N-2= 0
+2. +2
N= 2

So 0 & 2 are both answers



3 0
3 years ago
A stock market analyst notices that in a certain year, the price of IBM stock increased on 131 out of 252 trading days. Can thes
san4es73 [151]

Answer:

95% confidence interval for the proportion of days that IBM stock increases.

(0.45814 , 0.58146)

Step-by-step explanation:

<u><em>Step:1</em></u>

Given that a stock market analyst notices that in a certain year, the price of IBM stock increased on 131 out of 252 trading days.

Given that the sample proportion

                      p^{-} = \frac{131}{252} = 0.5198

Level of significance = 0.05

Z₀.₀₅ = 1.96

<u><em>Step:2</em></u>

<u><em>95% confidence interval for the proportion of days that IBM stock increases.</em></u>

<u><em></em></u>(p^{-} - Z_{0.05} \frac{\sqrt{p(1-p)} }{\sqrt{n} } , p^{-} + Z_{0.05} \frac{\sqrt{p(1-p)} }{\sqrt{n} } )<u><em></em></u>

(0.5198 - 1.96(\sqrt{\frac{0.5198(1-0.5198)}{252} } , 0.5198 +1.96(\sqrt{\frac{0.5198(1-0.5198)}{252} })

(0.5198 -  0.06166 , 0.5198+0.06166)

(0.45814 , 0.58146)

<u><em>Final answer:-</em></u>

95% confidence interval for the proportion of days that IBM stock increases.

(0.45814 , 0.58146)

3 0
3 years ago
In the past ten years, the population of a city decreased from 90,000 to 75,000 Find the percent decrease.
vfiekz [6]
The answer is 31.5%.
8 0
3 years ago
Draw a shape that has 4 sides and two right angles going to peril
-BARSIC- [3]
You could draw a parallelogram. 
6 0
3 years ago
Read 2 more answers
Other questions:
  • School: Practice &amp; Problem Solving
    13·1 answer
  • Solve the system of linear equations. separate the x- and y- values with a coma.
    10·1 answer
  • In the video, I drop a ball off a three-story balcony. We know that objects in freefall follow the equation for height h, in
    7·1 answer
  • Vertical asymptote of 8tan(πx). Use n as an arbitrary integer if necessary
    12·1 answer
  • Evaluate (2-5i)(p+q)(i) when p=2 and q=5i.
    10·1 answer
  • Solving right triangles
    9·1 answer
  • What do you think 6x9 is? ​
    15·2 answers
  • Get? 2) Sammy got a 70% on a test. There were 50 questions. How many did he get wrong? ​
    6·1 answer
  • HELP PLEASE <br> /8th grade mathhhh
    8·1 answer
  • 5 x (-4)-((-6)-7)<br> (The X means to multiply)
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!