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Can you show me in excel how to work out this problem please?
The duration of shoppers' time in BrowseWorld's new retail outlets is normally distributed with a mean of 31.9 minutes and a standard deviation of 14.5 minutes.
How long must a visit be to put a shopper in the longest 30 percent?

Solved by F. H. in 21 mins

Hello!
I accidentally formatted an entire row and I didn't mean to... I've done a lot of work since, so I can't use a simple undo.... Can you help me please?

Solved by K. Q. in 14 mins

A data set includes 103 body temperatures of healthy adult humans having a mean of 98.9degreesF and a standard deviation of 0.65degreesF. Construct a 99% confidence interval estimate of the mean body temperature of all healthy humans. What does the sample suggest about the use of 98.6degreesF as the mean body temperature?

Solved by X. W. in 27 mins

I need to find the mean of several columns and express the result as a percentage. I need to 'weight' the value of some columns over others

Solved by X. W. in 17 mins

What does this formula mean: =INDEX($N$168:$R$172,Q5,R5)?

Solved by C. H. in 28 mins

How can I automatically transfer my text from one sheet to another in Excel. I mean whenever I put or write any text in sheet in 1 it should also automatically be written in sheet 2.
Is there any formula for this??

Solved by O. E. in 20 mins

How can I automatically transfer my text from one sheet to another in Excel? I mean whenever I put or write any text in a sheet in 1 it should also automatically be written in sheet 2.
Is there any formula for this??
Now, I have attached the file, as you can see first I have to put all the data in the sheet no.2 named as "data center" then I have to put in sheet one. What I want is that whenever I put data in sheet 2 it should automatically come in the sheet no.1 also.

Solved by O. J. in 19 mins

how do you calculate percentile rank in excel when the question mean is known for 10 companies. Example the Mean is 3.58 from the sum of the 10 companies Mean divided by 10. The lowest Mean of the 10 organizations is 2.85 and the highest Mean is 4.22
Our goal is to be able to show the percentile rank of the 10 companies for their mean.

Solved by X. W. in 27 mins

what does this formula mean in excel =$C8/SUM($J6:$J7)*$J10

Solved by V. F. in 12 mins

what does this macro mean?
Sub CopyColumnHeaders()
'
' CopyColumnHeaders Macro
'
'
ActiveWindow.SmallScroll Down:=3
ActiveWindow.SmallScroll ToRight:=-2
Range("A1:T2").Select
Selection.Copy
Range("U1").Select
ActiveSheet.Paste
Range("U2").Select
End Sub

Solved by B. C. in 24 mins