In a study of cellphone use and brain hemispheric dominance, an internet survey was emailed to 2337 subjects randomly selected from an online group involved with ears. 1169 surveys were returned. construct a 90% confidence interval for the proportion of returned surveys. A) find the best point estimate of the population proportion p (round to 3 decimal places)
B) Identify the value of the margin of error E(round to 3 decimal places)
C)construct the confidence interval(round to 3 decimal places)

)a smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0 millimeters (depth). what is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm)

Need to increase the numbers of customers i talk to daily by 20% how many customers do i need to talk to if i talk to a average of 8 customers per hour during an 8 hour shift

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?