Question

In: Statistics and Probability

1)The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have...

1)The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 47 ounces and a standard deviation of 9 ounces.

Use the Empirical Rule, also known as the 68-95-99.7 Rule. Do not use Tables or Technology to avoid rounding errors.

Suggestion: sketch the distribution in order to answer these questions.

a) 68% of the widget weights lie between  and

b) What percentage of the widget weights lie between 29 and 56 ounces?  %

c) What percentage of the widget weights lie above 20 ?  %

2) Consider the following data set:

45.2 42.1 40.7 51.5 37.2
41.5 48.7 48.6 45.2 43.3
41.7 43 46.1 44.3 45.2
36.1 35.6 43.6 44.3 50.4
50.6 40.7 43.7 42.8 35.3
40.7 38.5 43.2 40.3 43.2



Using the IQR definition of outliers, how many outliers are in this data set?

Find the lower fence
Find the upper fence
Number of outliers =

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