Question: Question 1 : The standard deviation of data is calculated to be 8.What is the variance? Question 2: A library has seven branches in its

Question 1 : The standard deviation of data is calculated to be 8.What is the variance?

Question 2: A library has seven branches in its system.The number of volumes (in thousands) held in the branches are 83, 510, 33, 256, 401, 47 and 23.What is the standard deviation? (Answer as a whole number)

Question 3: The following 6 values are a sample: 13, 3, 8, 10, 8 and 6.Calculate the standard deviation.

Question 4: Recent studies indicate that the typical 45-year-old woman spends $350 per year for personal care products with a population standard deviation of $45.The distribution of the amounts spent is positively skewed.We select a random sample of 40 women.What is the likelihood of finding a sample mean larger than $335?(Answer as a percentage with two decimal places and include the % symbol).

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