Sound City sells the TrueSound-XL, a top-of-the-line satellite car radio. Over the last 90 weeks, Sound City has sold no radios in six of the weeks, one radio in 12 of the weeks, two radios in 42 of the weeks, three radios in 22 of the weeks, four radios in 6 of the weeks, and five radios in 2 of the weeks. The following table summarizes this information. Number of Weeks Number of Radios Sold Having the Sales Amount 6 12 42 3 22 4 2 Compute a weighted mean that measures the average number of radios sold per week over the 90 weeks. (Round your answer to 2 decimal places.) unit of measure
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
![Sound City sells the TrueSound-XL, a top-of-the-line satellite car radio. Over the last 90 weeks, Sound City has sold no radios in six of the weeks, one radio in 12 of the weeks, two radios in 42 of the weeks, three radios in 22 of the weeks, four radios in 6 of the weeks, and five radios in 2 of the weeks. The following table summarizes this information.
| Number of Radios Sold | Number of Weeks Having the Sales Amount |
|-----------------------|-----------------------------------------|
| 0 | 6 |
| 1 | 12 |
| 2 | 42 |
| 3 | 22 |
| 4 | 6 |
| 5 | 2 |
Compute a weighted mean that measures the average number of radios sold per week over the 90 weeks. (Round your answer to 2 decimal places.)
μ = [input field] unit of measure
To calculate the weighted mean, multiply each number of radios sold by the corresponding number of weeks, sum these products, and then divide by the total number of weeks (which is 90).
Weighted Mean Formula:
\[
\mu = \frac{\sum (x_i \times f_i)}{\sum f_i}
\]
Where \(x_i\) is the number of radios sold and \(f_i\) is the number of weeks.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F88d18a19-21f4-41fb-afe0-306734676977%2Fa090cae0-3d8c-42a9-bf6f-0749d86239dd%2Fj6wvujg_processed.png&w=3840&q=75)
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