A marketing researcher for a phone company surveys 100 people and finds that the proportion of customers who are likely to switch providers when their contract expires is 15% a) What is the standard deviation of the sampling distribution of the proportion? b) If she wants to reduce the standard deviation by half, how large a sample would she need?

Boteck is a full-service technology company. it provides equipment, installation services, and training services. customers can purchase any product or service separately or as a bundled package. on may 3, box-rite corporation purchased computer equipment, installation, and training for a total cost of $120,000. estimated stand-alone fair values of the equipment, installation, and training are $75,000, $50,000, and $25,000 respectively. the journal entry to record the sale and installation on may 3 will include select one:

One pound of material is required for each finished unit. the inventory of materials at the end of each month should equal 20% of the following month's production needs. purchases of raw materials for february would be budgeted to be:

Q3. loral corporation manufactures parts for an aircraft company. it uses a computerized numerical controlled (cnc) machining center to produce a specific part that has a design (nominal) target of 1.275 inches with tolerances of ± 0.020 inch. the cnc process that manufactures these parts has a mean of 1.285 inches and a standard deviation of 0.005 inch. compute the process capability ratio and process capability index, and comment on the overall capability of the process to meet the design specifications.