Your radiologist asks you to repeat a scan in order to doubl…

Your radiologist asks you to repeat a scan in order to double your SNR. The parameters are T1-weighted SE with a 500 ms TR, 20 ms TE, 1 NEX, 256 x 256 image matrix.  What parameter will you change in order to double SNR and what do you change it to?  What will the resultant scan time be for this scan assuming all other parameters are unchanged?

Welcome to your final exam for digital marketing. This is a…

Welcome to your final exam for digital marketing. This is a reminder. If you are using notes (1 page, double-sided), then remember to show both sides to the proctor after the ID check. If you did not already do so, take your one page of notes and show both sides of your sheet of paper to your webcam now. Then, proceed to the next exam question.

(Essay) – An essay is more than one paragraph. Summarize you…

(Essay) – An essay is more than one paragraph. Summarize your team’s campaign (i.e., the brand you were assigned, the campaign idea your team proposed, and the target market). Then explain what you would do to develop its content marketing based on arguments and lessons from Chapter 12. 

A coffee manufacturer claims that the mean amount of coffee…

A coffee manufacturer claims that the mean amount of coffee in its 4-ounce jars is 4.1 ounces. A consumer advocate group tests whether or not the true average amount of coffee in the 4-ounce jars differs from 4.1 ounces at the 5% level of significance. Based on a sample of 40 4-ounce jars, they find that the average amount of coffee in 4-ounce jars is 3.9 ounces and the standard deviation is 0.45 ounces. Note:

It is believed that the average speed of a train decreases i…

It is believed that the average speed of a train decreases in rainy conditions, in the sense that as the daily rainfall amounts increase, the average speed of a train decreases. Some researchers claim that this decrease is linear. To test this claim, a simple random sample of 40 rainy days in Greece (from November 2011 to November 2015) was collected. For each day, the amount of daily rainfall (in millimeters (mm)) and the average speed of a train on the Athens-Thessaloniki route (in kilometers per hour (km/h)) were recorded. Let X be the continuous random variable representing the amount of daily rainfall, and Y be the continuous random variable representing the average speed of the train on the Athens-Thessaloniki route. It is given that a 95% confidence interval for the regression equation’s parameter  is: (−0.7350529,−0.6230592) with a margin of error of 0.05599685. Recall that the confidence interval equation for the slope of a linear regression equation is: