1.) In 1940 the average size of a U.S. farm was 174 acres. Let’s say that...

1.) In 1940 the average size of a U.S. farm was 174 acres. Let’s say that the standard deviation was 55 acres. Suppose we randomly survey 38 farmers from 1940. Using excel and excel functions show me how you got your answer

In words, Χ = _____________
In words,¯¯¯¯¯XX¯ = _____________
¯¯¯¯¯XX¯~ _____(_____,_____)
The IQR for¯¯¯¯¯XX¯ is from _______ acres to _______ acres. excel functions

2.) The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of about ten. Suppose that 16 individuals are randomly chosen. Let¯¯¯¯¯XX¯ = average percent of fat calories. Using Excel and excel functions, show me how you got your answer.

¯¯¯¯¯XX¯ ~ ______(______, ______)
For the group of 16, find the probability that the average percent of fat calories consumed is more than five. Graph the situation and shade in the area to be determined. excel function
Find the first quartile for the average percent of fat calories. excel function

Expert Solution

orchestra answered 1 year ago

In 1940 the average size of a U.S. farm was 174 acres†. Let's say that the...

In 1940 the average size of a U.S. farm was 174 acres†. Let's say that the standard deviation was 56 acres. Suppose we randomly survey 46 farmers from 1940. Part (c) Give the distribution of X. (Round your standard deviation to two decimal places.) X ~ , Part (d) The middle 50% of the distribution for X, the bounds of which form the distance represented by the IQR, lies between what two values? (Round your answers to two decimal places.)...

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