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Jupyter notebook python version different from environment python version

I wanted to run jupyter notebook with python: 3.7.10 so I created a virtual env and activated it using anaconda. Then when I run Jupyter notebook, it still uses python 3.8.8. How can I change the python version used by jupyter notebook?
Thank you for your help in advance.

You have probably typed jupyter notebook in the command prompt and it opened.
Actually jupyter and notebook are two modules that you need to install on your virtual environment. So that you can leverage jupyter notebook from that environment.
In your case since you didn't had them it started from the one having.
Now the way I suggest to start jupyter from a particular environment is from the navigator itself as shown in the figure below.
Select your environment and then install and launch jupyter notebook.
If it doesn't work you can try integrating conda with jupyter notebook and run your environment directly from jupyter notebook using the package nb_conda. Check this 4 min video youtu.be/Ro9l0eapoJU for the process.

Just installed Jupyter using Anaconda but can't run it using terminal. Says command not found

I just bought my very first Mac after using Windows my entire life and have been trying to install things. I am also still kind of a beginner at programming.
I installed Anaconda for Python 2.7 version, and then I installed the 3.7 version right after.
I tried going to terminal and typing jupyter notebook but it says:
zsh: command not found: jupyter
I am able to launch a jupyter notebook (I think) when I search for jupyter notebook in spotlight and executing the top hit.
I've been reading a lot on forums about this issue and see a lot of people talking about PATH which I am not really sure about.
I've seen people also post their which python information and theirs seem very different from mine:
which python3
usr/bin/python3
which python
usr/bin/python
Any help would be appreciated! Still learning how to set up this Mac. Thank you.

You might want to refer to this link https://jupyter-notebook-beginner-guide.readthedocs.io/en/latest/execute.html
3.1.2. Change Jupyter Notebook startup folder (Mac OS)
To launch Jupyter Notebook App:
Click on spotlight, type terminal to open a terminal window.
Enter the startup folder by typing cd /some_folder_name.
Type jupyter notebook to launch the Jupyter Notebook App The notebook interface will appear in a new browser window or tab.
From what I can understand you are not changing to the startup directory of Jupyter.

You need to add jupyter to your path.
In your terminal, type in the following command:
export PATH="/PUT JUPYTER PATH HERE:$PATH"
Then try jupyter notebook
Reasoning: If installing using pip install --user, you must add the user-level bin directory to your PATH environment variable in order to launch jupyter lab

Is there a way to run Jupyter Notebooks Without Anaconda?

I deleted Anaconda because it was causing more issues than solving in working with other editors like Sublime, PyCharm, etc...
In class, we have a lot of Jupyter notebooks. Is there a program that allows me to run Jupyter Notebooks just like Anaconda allowed me to? Basically the same User Interface where Cntrl + Enter runs a block a code?
Thanks.
Edit: I figured it out. I needed to downgrade Python from 3.8 to 3.7

Jupyter can be installed separately to Anaconda using pip via pip3 install jupyter - see the Jupyter page for more information.

Can't launch Jupyter Notebook at all

I recently installed the Anaconda Navigator (Anaconda 2) on a Windows 8.1 machine.
If I launch Jupyter Notebook from the Anaconda window, I am met with a 'Page cannot be displayed' error in my browser (Chrome).
I have tried launching Jupyter Notebook from the Anaconda Prompt (no notable error message output). I have also tried opening the Notebook in a different browser (Firefox), and I have tried running the Prompt in Administrator mode. No luck.
I have Jupyter Notebook version 5.6.0 according to the Navigator, but if I type jupyter --version at the prompt it says 4.4.0 (wondering if this is a problem?)
I kind of expected to be able to launch a Notebook right off the bat after installing Anaconda. Is there some set-up I have missed?
(Edit) Tried a few more things, after reading the Jupyter Notebook docs. Tried replacing 'localhost' in the URL with 127.0.0.1, and tried opening the link Chrome with --disable-web-security. Didn't help.

Steps which i will advice:
1) Open your command prompt in the directory which contains your notebook or where you want to create new notebook.
2) Write jupyter notebook in cmd and press enter.
If jupyter notebook is properly installed then it will certainly open, else try reinstalling it.
Note: You can always update your jupyter notebook via conda or pip. At time if you update or install package/IDE via pip, Anaconda terms it as "broken link" and give issue.

Python Anaconda Jupyter notebook doesn't launch

I just downloaded and installed anaconda, and I opened the jupyther notebook from the "start" menu, it prompts a black window that looks like a command line window, but instead of opening my browser on the notebook "tree" page, it just closes the black command line window and nothing happens.
I formatted my computer and downloaded the anaconda, before it was fine and now it doesn't launch.
tried to unistall and install again but nothing...
and ideas?

I had the exact same problem, and solved it using various answers from various places. Here is what I did:
Open a terminal, then copy paste:
conda update nb_conda nb_conda_kernels nb_anacondacloud
For me it answered that nb_conda wasn't installed, so I added:
conda install nb_conda
From there, jupyter notebook launched properly but it ended up in no folder and stated a "servor error". I solved the problem by running it stating the folder where I wanted it to start:
jupyter notebook C:\Users\YOURNAME\Documents\Python
It is then possible to update directly your shortcut by changing the "target" and "opens in":
Target : C:\ProgramData\Anaconda3\Scripts\jupyter.exe notebook
Opens in : C:\Users\YOURNAME\Documents\Python
I hope that it will work all right for you, let me know if you found a better solution...