# statistics

posted by .

A soft drink distributor was interested in examining the relationship between the number of ads (x) for his product during prime time on a local television station and the number of sales per week (y) in 1000’s of cases. He compiled the figures for 20 weeks and computed the following summary information: n=20, sum of x=92, sum of y=177, sum product of x and y=884, stdev of x=1.3917 and stdev of y=2.9069. Find the correlation coefficient for the number of ads during prime time
weekly sales.

• statistics -

There are several variations of the correlation coefficient formula. Find the one that will use the data given in your problem, then calculate r.

• statistics -

.9081

• statistics -

idk

## Similar Questions

1. ### math

A 30-second advertisement on a local television station during prime time costs the advertiser \$1,280. To the nearest cent, how much does the ad cost per second?
2. ### inventory

Suppose that the R & B Beverage Company has a soft drink product that shows a constant annual demand rate of 3600 cases. A case of the soft drink costs R & B \$3. Ordering costs \$20 per order and holding costs are 25% of the value of …
3. ### Math

There are 13 flavbors at a local ice cream parlor. Is the number 13 a prime number or a composite number?
4. ### Math

The chart shows the number of cars sold per week at a car dealership during the month of June. Salesperson Week 1 Week 2 Week 3 Week 4 Tim 4 8 2 1 Geena 1 2 7 1 Rafael 2 1 5 4 Sonny 4 1 1 10 How should the data be displayed to make …
5. ### statistics

Six students from a statistic class reported the number of hours of television they watched per week. Here are their data: 8,10,5,14,3,6. What is the median number of hours of television watched per week for this sample of 6 students
6. ### math

An ad campaign for a new snack chip will be conducted in a limited geographical area and can use TV time, radio time and newspaper ads. Information about each medium is shown below. Medium Cost Per Ad # Reached Exposure Quality TV …
7. ### statistics

Imagine that you are interested in whether there is a relationship between the amount of coffee people drink and the number of hours they sleep each night. Determine whether you expect a positive or a negative relationship between …
8. ### mat-119

Greg Tobin sells bottled water. He has found that the average amount of time he spends with each customer is related to his weekly sales volume by he function f(x)=x(60-x), where x is the number of minutes per customer and f(x) is …
9. ### statistics

Plymouth Rock Securities is interested in finding out if there is a relationship between the number of new clients brought into the firm by a broker and the sales performance of the broker. A random sample of 11 brokers' records are …
10. ### math

a new product is to be promote in the market. The sales in the first week is estimated to be 5000 unit with an increase of 1500 each week during the product's lifespan. Find the formulas for the number of sales, S(unit), in the nth …

More Similar Questions