Question

Asked Nov 17, 2019

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3. The number of broken bobble heads found on a bobble head production line every week follows a normal distribution with a mean of 10 bobble heads and a standard deviation of 2. Use the emperical rule and/or symmetry to justify your answers.

A. What number of bobble heads broken in a given week would be considered the 84th percentile? Use the empircal rule and/or symmetry to justify answers.

B. Would youu be surprised if, in a given week, less than 10 bobble heads were broken? Justify your answer. Use the empirical rule/and or symmetry to justify answers.

C. What range of weekly broken bobble heads would occur 95% of the time. Use the empirical rule and/or symmetry to justify answers.

Step 1

From the provided information, the mean (*µ*) and standard deviation (*σ*) are 10 and 2 respectively.

A. Let the number of bobble heads broken in a given week is *x*. The *z* score at 84^{th} percentile from the *z* score table is 1.

Now, the required number of bobble can be obtained as;

Step 2

Using the empirical rule, 99.7% of the data lie within three standard deviation from the mean which can be obtained as;

Step 3

B. It would not be surprised if, in a given week less than 10 bobble heads were broken because the interval which contain...

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