I need help on questions 4 and 5

Lab Ch. 11 continued The agencies, however, are not concerned with statistical significance. The agencies would like to know if the difference in speed is of practical importance to them. Market research has shown that in order to justify the higher price of color displays, they must be faster by an average of at least 10 seconds per transaction. 4. Construct a 90% confidence interval for the difference in the means (color minus black and white). bon cafferty downatiesup on 5. Use the interval to explain to the agencies if they should or should not pay for color displays. Use complete sentences and proper grammar. soralee stolninos s palau towent aboy Vibeut vevegrifogud in ody Joejen boy bluowes roleisb indy ader of beau snew isnt so fedele ardi worte of give sad hemmelig