Final answer:
To set the width of column C to 15 characters, right-click the column header, select 'Column Width', and enter '15'. This function may vary slightly based on the specific spreadsheet application being used.
Step-by-step explanation:
To change the width of column C to exactly 15 characters in a spreadsheet program, you typically need to adjust the column width settings.
For most spreadsheet applications, this process involves:
Right-clicking the header of column C.
Choosing 'Column Width' from the context menu.
Entering '15' (assuming the width is measured by character count) into the dialog box that appears and confirming the change.
In some cases, if the measurement is not by characters but by another unit like pixels or points, you will need to estimate the equivalent width. Sadly, the provided references Press STAT and arrow over to TESTS and Arrow down to A: 1-PropZint seem unrelated to changing column widths in spreadsheet software.
The complete question is: Change the width of column C to exactly 15 characters. is: