Provide an appropriate response. the proportion of adults aged 15-49 who are living with hiv/aids is 0.5% in latin america, 1.0% in the caribbean, 0.9% in eastern europe and central asia and 0.6% in north america. suppose we include the proportion for sub-saharan africa (5.0%) to this data set and calculate the standard deviation. would you expect it to be significantly larger, smaller or remain about the same as the standard deviation of the proportions without the observation from sub-saharan africa? remain about the same significantly smaller o unable to determine from the information given significantly larger

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?

What is the correlation coefficient between the variables? round to three decimal places. enter your answer in the box

When 142 is added to a number the result is 64 more times the number my options are 35 37 39 41