Arandom sample of people at a mall shows that 22 prefer to take a
family trip by car, 18 prefer to travel by plane, and 4 prefer to travel by
bus. is the sample method valid? if so, how many people out of 500
would you expect to say they prefer to travel by plane? (example 4)
also can you tell me how you got the answer .

Atemperature of 1.64◦f corresponds to answer in units of ◦c.

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.

Answer! if you don’t mind, can you explain