Question

the mean lifespan is 71.45 years, and the standard deviation is 12.35 years. Mr. Rodriguez would like to know how many days, on average, presidents tend to live beyond their 70th birthday. Find the mean and standard deviation of the transformed data. Note: There are 365 days in a year.

Answer 1

Answer:

Mean = ∑x + standard deviation = 429.21

Step-by-step explanation:

Mean lifespan = 71.45 years

Standard deviation = 12.35 years

Standard deviation= ∂ = x-µ / N

∂ = standard deviation

µ= mean

x = size of year

By using formula of standard deviation:

                                            = 70 – 71.45 / 12.53

                              Approximately equal to 64.21

Mean = ∑x + standard deviation

          = 365 + 64.21

       = 429.21