According to a government study among adults in the 25- to 34-year age group, the mean amount spent per year on reading and entertainment is $2,060. assume that the distribution of the amounts spent follows the normal distribution with a standard deviation of $495. (round your z-score computation to 2 decimal places and final answers to 2 decimal places.)

what percent of the adults spend more than $2,575 per year on reading and entertainment?

what percent spend between $2,575 and $3,300 per year on reading and entertainment?

what percent spend less than $1,225 per year on reading and entertainment?

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?