Something like:
Code:
SELECT [Reporting and Metrics Tracker].[Request Type], Count([Reporting and Metrics Tracker].ID) AS [Total Requests], [Snapshot Complete].CountOfStatus AS [Total Completed], Sum([Reporting and Metrics Tracker].[Effort per occurence]) AS [Time (hrs)]
FROM [Reporting and Metrics Tracker] LEFT JOIN [Snapshot Complete] ON [Reporting and Metrics Tracker].[Request Type] = [Snapshot Complete].[Request Type]
WHERE [Table Reference].[Created] Between [Start Date] and [End Date]
GROUP BY [Reporting and Metrics Tracker].[Request Type], [Snapshot Complete].CountOfStatus;
(obviously replacing "Table Reference" with the name of the table that the Created field resides in)