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valina [46]
3 years ago
6

Ms. Johnson uses a statistics program to analyze all the data collected by her students during a lab experiment about the accele

ration due to gravity. The program reports a mean of 31.5 and a standard deviation of 2.5.
What is the variance of the data? Round to the nearest tenth.

1.6
2.5
5.6
6.3
Mathematics
2 answers:
Kipish [7]3 years ago
4 0
A commonly used measure of dispersion is the standard deviation<span>, which is simply the square root of the </span>variance<span>. Therefore, we just raise the standard deviation to the power of 2 to get the answer. We do as follows:

s = </span>√v
(2.5)² = (√v)²
v = 6.25 = 6.3 <--------last option
mariarad [96]3 years ago
3 0

Answer:

The answer is D) 6.3

Step-by-step explanation:

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Find the total travel time: Depart 5:30 pm MST Arrive 9:20 pm CST.
Ivan

Answer:

2 hour 50 minutes

Step-by-step explanation:

Given data: Departure = 5:30 pm MST, Arrive = 9:20 pm CST

Note that MST is the time zone 1 hour before CST.

Let us convert MST into CST.

Departure = 5:30 pm MST = 6:30 pm CST

Total time travel = Departure – Arrival

= 9.20 pm MST – 6.30 pm MST

= 2 hour 50 minutes

Hence, total time travel is 2 hour 50 minutes.

5 0
4 years ago
There are 3 consecutive odd integers that sum to -261. what are the integers​
Iteru [2.4K]

-85, -87, -89

Step-by-step explanation:

1. Divide -261 by 3. (Answer is -87)

2. Take the odd integer before it (-85) and the odd integer after it (-89).

4 0
3 years ago
This is complex numbers​
CaHeK987 [17]

the answer to this problem is i = 5 that is the answer

8 0
3 years ago
Help me again pls!!!<br>​
atroni [7]

Answer:

19/0.8 23,75 or 23 3/4

and go to elementary school

5 0
3 years ago
Read 2 more answers
How many solutions are in -x-y=3 and y=x-3
Klio2033 [76]
See, pls, offered explanation:
1) the both equations are linear function, it means system made up of the both equation has the only solution.
2) if to prove this:
\left \{ {{-x-y=3} \atop {-x+y=-3}} \right.  \left \{ {{x=0} \atop {y=-3}} \right.
Answer: one solution.
5 0
3 years ago
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