00:01
Hello students we are going to write here sample mean we are going to write here for this x bar is equivalent to we need to write here 2 to 3 .262 so basically if i write here for this sample standard deviation simple standard deviation, if i write here for this, this must be s.
00:29
So basically if i write here for this, this must be written as we need to write here 24 .92.
00:39
So let's erase this to make it more clear.
00:45
Sample size is 10.
00:47
So basically if i write here alpha is, so basically if i write here alpha is, so basically here 90 % confidence level is given so this is alpha is 1 minus 0 .90 which is 0 .1 so here sample size is small so we are going to use t distribution t of alpha by 2 comma degree of freedom is t of 0 .1 divided by 2 and degree of freedom is n minus 1 which is t of 0 .1 divided by 2 .9 so basically if i write here for this so this value must be 1 .8 .33.
01:26
So basically if i write here what would be our margin of margin of error must be t of alpha y to comma degree of freedom multiplied by s divided by under root of n which is 1 .833.
01:47
So this must be erased to make it more.
01:51
Or here 1 .833 multiplied by s 24 .92 divided by under root of 10, which is equivalent to if i write here for this, this is 14 .124.
02:06
So basically if i write here for this, this must be written as mu value is between...