On the average, hotel guests who take elevators weigh about 150 pounds with an sd of about 35 pounds. an engineer is designing a large elevator for a convention hotel, to lift 50 such people. if she designs it to lift 4 tons, the chance it will be overloaded by a random group of 50 people is about . explain briefly.

Aswim teacher sells lesson packages. the best deal has the highest ratio of lessons to total cost. swim lesson packagesnumber of lessons total cost$10$4010 1 $8015$80which package is the best deal? l lesson for $105 lessons for $4010 lessons for $8015 lessons for $80mark this and returnsave and exit

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

Do social recommendations increase ad effectiveness? a study of online video viewers compared viewers who arrived at an advertising video for a particular brand by following a social media recommendation link to viewers who arrived at the same video by web browsing. data were collected on whether the viewer could correctly recall the brand being advertised after seeing the video. the results are given below. correctly recalled the brandarrival 409153browsing20484b. conduct the hypothesis test, using the 0.025 level of significance. what is the value of the test statistic? χ2stat=what is the p-value? p-value=is this value significant atα=0.025?