Author Question: Each year advertisers spend billions of dollars purchasing commercial time on network television. ... (Read 160 times)

stevenposner · **on:** Jun 24, 2018

Each year advertisers spend billions of dollars purchasing commercial time on network
television. In the first 6 months of one year, advertisers spent 1.1 billion.

Who were the largest
spenders? In a recent article, the top 10 leading spenders and how much each spent (in million of
dollars) were listed:
Company A 70.7 Company F 24.8
Company B 63.9 Company G 24
Company C 55.7 Company H 22.7
Company D 54.2 Company I 23.2
Company E 30.3 Company J 20.1
Calculate the sample variance.
A) 389.965 B) 3763.035 C) 1864.521 D) 2080.829

Question 2

A one -week study revealed that 60 of a warehouse store's customers are women and that 30
of women customers spend at least 250 on a single visit to the store.

Find the probability that a
randomly chosen customer will be a woman who spends at least 250.
A) 0.50 B) 0.36 C) 0.18 D) 0.90